IMAGE DEVICES WITH DIRECTION SYSTEMS

专利摘要:
A method and apparatus for capturing an image of at least one object that appears in a field of view. A housing can be provided with at least partially an image sensor provided therein. The image sensor has a central image axis. A first and a second guideline unit are each offset with respect to the image sensor. The first guiding unit is oriented to project a first bound light pattern which intersects the central image axis on an image plane. The second guiding unit is oriented to project a second bound light pattern which intersects the first light pattern and the central image axis on the image plane.
公开号:BE1025909B1
申请号:E2018/5668
申请日:2018-09-28
公开日:2019-10-31
发明作者:Darran Michael Handshaw；Edward Barkan；Christopher P. Klicpera
申请人:Symbol Technologies Llc；
IPC主号:

专利说明:

IMAGE DEVICES WITH DIRECTION SYSTEMS
Background
Barcode scanning devices and other scanning devices generally capture images within a certain field of view. In some cases it is important to be aware of the central point of the field of view, particularly in cases where the barcode is positioned at relatively near or relatively far distances. For example, in environments where picking lists are used, it may be necessary to read a single barcode close to other barcodes. In these environments, the scanning device must be precisely aligned to scan the desired barcode. Also, having a precisely targeted device may also be needed during scanning of barcodes that are far away.
During non-collinear positioning of the aligning source with the central image axis, the aligning pattern undergoes a displacement relative to the central image axis as a function of the distance between the sensor and the image plane. Although some systems address these and other problems through a combination of complex electromechanical components coupled with software correction, such systems are quite complex and expensive, and can adversely affect device reliability. Furthermore, these systems may require considerable processing time, which can contribute to the total scanning time and thus reduce the usability of the device.
Thus, there is a need for improved systems, methods, and devices that address these problems.
Summary of the invention
According to the invention, an image device is provided for capturing an image of at least one object that appears in a field of view, the image device comprising a housing, an image sensor
BE2018 / 5668 at least partially provided within the housing, the image sensor comprising a central image axis, a first orientation unit offset from the image sensor, and a second orientation unit offset from the image sensor, wherein the first orientation unit is oriented about a first bound light pattern projecting which intersects the central image axis on an image plane; and wherein the second guiding unit is oriented to project a second bound light pattern which intersects the first bound light pattern and the central image axis on the image plane.
The first bonded light pattern and the second bonded light pattern may preferably combine to form a cross pattern defining a plurality of outer edges of the image plane, wherein the plurality of outer edges correspond to an allowable field of view dimension of light received from a field of view tangent to the image sensor .
More preferably, the first light pattern and the second light pattern can form a perpendicular cross pattern.
Alternatively, the first light pattern and the second light pattern can form a non-perpendicular cross pattern.
It is advantageous that the first guiding unit may comprise a first light source, a first lens, and a first aperture, the first lens and the first aperture being oriented to receive light appearing from the first light source, and that the second guiding unit a second light source, a second lens, and a second aperture may comprise the second lens and the second aperture being oriented to receive light appearing from the second light source.
The first opening can preferably be defined by a first opening in a chassis, and the second opening can preferably be defined by a second opening in the chassis.
The first lens and the second lens can advantageously be formed at least in part by a frame which is coupled to the chassis.
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The first opening can preferably comprise a horizontal line opening which forms a bound horizontal line of light.
The second aperture may preferably comprise a vertical line aperture which forms a bonded vertical line of light.
The first opening can be, for example, about 0.3 mm by about 2.3 mm, and the second opening can be, for example, about 1.33 mm x 0.3 mm.
The first guideline unit may, for example, be horizontally coplanar with the image sensor and the second guideline unit may be vertically coplanar with the image sensor.
The first guiding unit may alternatively be positioned along a first diagonal plane relative to the image sensor, and the second guiding unit may be positioned along a second diagonal plane relative to the image sensor, the second diagonal plane being preferably symmetrical with respect to the image sensor first diagonal plane.
It is advantageous that the first guiding unit can be shifted relative to the image sensor with a first rise relative to the central image axis of the image sensor, and that the second guiding unit can be shifted relative to the image sensor with a second rise relative to the image sensor. central image axis of the image sensor.
It is even more advantageous that the first guiding unit can be positioned at and at a side of the central image axis, and that the second guiding unit can be positioned below or above the central image axis.
The first bonded light pattern can preferably be one of a continuous line or a discontinuous line and the second bonded light pattern can preferably be one of a continuous line or a discontinuous line.
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The first bound light pattern can be arranged to align with a horizontal component of the field of view on the image plane, and the second bound light pattern can be arranged to align with a vertical component of the field of view on the image plane.
According to another aspect of the invention, a method is provided for illuminating a target with an optical scanner comprising an image sensor with a central image axis, the method comprising a first lighting unit which is offset from the image sensor, provided with a second lighting unit which is offset from the image sensor, illuminating the first illumination unit for having a first bound light pattern which intersects the central image axis on an image plane, and illuminating the second illumination unit for providing a second bound light pattern which includes the first light pattern and the central image axis on the image plane.
For example, the first bonded light pattern and the second bonded light pattern may combine to form a cross pattern defining a plurality of outer edges of the image plane.
Advantageously, the first light pattern and the second light pattern can combine to form a perpendicular cross pattern.
Alternatively, the first light pattern and the second light pattern can combine to form a non-perpendicular cross pattern.
According to yet another aspect of the invention, an image device is provided for capturing an image of at least one object appearing in a field of view, the image device comprising a housing, an image sensor at least partially provided within the housing, the image sensor comprising a plurality of photosensitive elements forming a substantially flat surface at least partially within the housing, the image sensor further comprising a central image axis which is normal on the substantially flat surface, a first alignment unit
BE2018 / 5668 offset from the image sensor, a second alignment unit offset from the image sensor, wherein the first alignment unit comprises a lighting source and a first aperture defined by a first line, and the second alignment unit a second light source and a second aperture defined by comprises a second line, wherein the first line and the second line intersect on the central image axis.
For example, the first line and the second line may intersect to form a right angle.
The first line and the second line may alternatively intersect to form a non-right angle.
Short description
The accompanying figures, in which the same reference numerals refer to identical or functionally identical elements throughout all individual views, are included in, and form part of the description, together with the detailed description below, and serve to further clarify embodiments of concepts which represent the claimed invention. and clarify various principles and advantages of these embodiments.
FIG. 1 is a perspective view of a scanning apparatus with a viewer corresponding viewer according to some embodiments.
FIG. 2 is an exploded view of the scanning device of FIG. 1 according to some embodiments.
FIG. 3 is a front view of the device of FIGS. 1 and 2 which shows an optical sensor and a plurality of guide units according to some embodiments.
FIG. 4 is a front view of the device of FIGS. 1-3 showing additional components of the plurality of guide units according to some embodiments.
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FIG. 5 is a sectional perspective view of the device of FIGS. 1-4 which shows a first guideline unit according to some embodiments.
FIG. 6 is a sectional perspective view of the device of FIGS. 1-5 which shows a second guideline unit according to some embodiments.
FIGs. 7A-7C show an example of a cross pattern provided by a adjuster according to the present disclosure.
FIGs. 8A-8C show an example of a cross pattern provided by a adjuster according to the present disclosure.
Those skilled in the art will appreciate that parts are shown in the figures for simplicity and clarity and are not necessarily drawn to scale. For example, the dimensions and positions of some parts in the figures may be exaggerated relative to other parts, to help increase understanding of the embodiments of the present invention.
The device and method components, when appropriate, are represented in the figures by conventional symbols, which show only those specific details that relate to the understanding of the embodiments of the present invention, so as not to obscure the description with details that are easy to understand. be clear to the person skilled in the art who has the advantage of the present description.
Detailed description
In an exemplary embodiment, the present invention comprises an imaging device for capturing an image of at least one object that appears in a field of view. A housing can be provided with an image sensor at least partially provided therein. The image sensor has a central image axis. A first and a second guideline unit are each offset with respect to the image sensor. The first guideline unit is
BE2018 / 5668 oriented to project a first bound light pattern which intersects the central image axis on an image plane. The second guiding unit is oriented to project a second bound light pattern which intersects the first light pattern and the central image axis on the image plane.
In another exemplary embodiment, the present invention includes a method for illuminating a target with an optical scanner which includes an image sensor having a central image axis. A first and a second lighting unit are provided, each of which is offset with respect to the image sensor. The first lighting unit is then illuminated to provide a first bound light pattern which intersects the central image axis on an image plane. The second lighting unit is illuminated to provide a second bound light pattern which intersects the first light pattern and the central image axis on the image plane.
In yet another exemplary embodiment, the present invention comprises an imaging device for capturing an image of at least one object that appears in a field of view. The imaging device comprises a housing, an image sensor provided at least in part within the housing, a first alignment unit offset from the image sensor, and a second alignment unit offset from the image sensor. The image sensor comprises a plurality of light-sensitive elements which form a substantially flat surface at least partially within the housing. Furthermore, the image sensor has a central image axis which is normal on the substantially flat surface. The first directional unit comprises a lighting source and a first opening defined by a first line. The second directional unit comprises a second light source and a second aperture defined by a second line. The first line and the second line intersect at the central image axis.
A first embodiment of an image-based barcode reader is shown schematically in FIGS. 1-6. The scanning apparatus 100 includes a housing 102, an image processing system 110 at least partially provided
BE2018 / 5668 within the housing 102 which includes an image sensor 112, an image lens 114, a printed circuit board 116, a first guiding unit 120, and a second guiding unit 130. The first guiding unit 120 and the second guiding unit 130 are each at least partially provided within the housing 102 and offset from the image sensor 112. The printed circuit board 116 may include a memory and a controller which operates from the image sensor 112, the first guiding unit 120, controls the second guideline unit 130, and any additional components. The scanning apparatus 100 may further comprise a chassis 140 and any number of additional components which may assist in the operation of the scanning apparatus 100 such as, for example, a window 142, coupling mechanisms 144, decoding systems, processors, circuits coupled to the circuit board 116, and the like.
The housing 102 includes an engaging member 102a and / or a trigger to be grasped by a user's hand, and further comprises a forward or scanning head member 102b extending from an upper member 102c of the engaging member 102a. In some examples, a lower portion 102d of the engagement portion 102a is arranged to be received in a docking station (not shown) provided on a table and / or a sales counter. The scanning head portion 102b supports the image processing system 110 within an inner region of the housing 102. As shown in FIGS. 3 and 4, when viewed from a front view, the image sensor 112 defines a horizontal axis H which extends along a width of a field of view of the image sensor 112 and a vertical axis V which extends along a height of the field of view of the image sensor 112. The horizontal axis H and the vertical axis V intersect at a central image axis A.
The image processing system 110 includes a modular scanning engine or image camera assembly and associated image circuits (not shown) and includes the image sensor 112 and the image lens 114. The
BE2018 / 5668 image sensor 112 may have a plurality of photosensitive elements that form a substantially flat surface at least partially within the housing. As stated earlier, the image sensor 112 further has a defined central image axis A which is normal on the substantially flat surface. In some embodiments, the image axis A is coaxial with the central axis of the image lens 114. In some examples, the image lens 114 may be a variable sharpness image lens assembly. The image lens 114 may include a zoom lens assembly or system which includes a group or set of stationary lenses and a group or set of movable lenses. The camera assembly can, but does not necessarily have to be, modular as the housing 102 can be removed from the device 100 as a unit or inserted into the device 100, which makes it easy to replace camera assemblies with different image characteristics, for example camera assemblies with different focal lengths , work areas, and fields of view. A working range is a distance range forwards or forwards (in a direction F in FIG. 1) of the camera assembly in which a target object of interest 106, such as a target barcode 107, can be successfully recorded and decoded.
The illumination-receiving pixels of the image sensor 112 define a light-receiving sensor matrix surface 112a (as can best be seen in FIG. 2). The image sensor 112 is fixed to the circuit board 116 in a parallel direction for stability. The sensor matrix surface 112a is substantially perpendicular to the central image axis A of the image lens 114. In the example shown, and best seen in FIG. 2, the housing 102 further accommodates a chassis 140 which is operatively connected to the housing 102. In these examples, the chassis 140 can support any number of components of the scanning apparatus 100.
In use, the image sensor 112 is adapted to capture an image of the target object 106, such as the image, during a shutter speed
BE2018 / 5668 target barcode 107, within the field of view FV of the image processing system 110. The field of view FV of the image processing system 110 is a function of both the setting of the image sensor 112 and the image lens 114 in addition to a distance and orientation between the image sensor 112 and the image lens 114 In some exemplary embodiments, the image processing system 110 is a two-dimensional (2D) image processing system and the image sensor 112 is a 2D sensor matrix. It should be understood, however, that the present disclosure is applicable in the same way to a linear or one-dimensional image processing system with a 1D linear sensor matrix.
The field of view FV of image processing system 110 (shown schematically in FIG. 1) comprises both a horizontal and a vertical component, the horizontal component being shown schematically as FVH and the vertical component being shown schematically as FW. The image sensor 112 is primarily arranged to capture 1D and 2D barcodes in image, for example, a Data Matrix barcode which, in the example shown, extends along a horizontal axis and comprises a plurality of rows of indicators including a multi-row and multi-column array of dark bars and white spaces. In other examples, the barcode and / or target object 106 may be in any form such as an image post code, a signature, and the like. Other examples are possible.
As previously mentioned, the image processing system 110 includes the first guideline unit 120 and the second guideline unit 130. The first and second guideline units 120, 130 cooperate to illuminate the field of view FV which will include the target barcode 107 during scanning. Specifically, the first guiding unit 120 is oriented to project a first bound light pattern or line 121 which intersects the central image axis A on an image plane. Similarly, the second guiding unit 130 is oriented to a second bound light pattern or line 131
BE2018 / 5668 projecting the central image axis A and the first bound light pattern
121 intersects on the image plane.
The first guiding unit 120 comprises a first light source 122 which, in the example shown, is a Light Emitting Diode (LED), but other light sources can be used. The first light source 122 can be coupled to the circuit board 116, and can be positioned along the horizontal axis H defined by the image sensor 112.
The first guiding unit 120 further comprises a first lens 124 adjacent or near (as shown in FIGS. 2-6) the first light source
122 positioned and a first opening adjacent or near (as shown in FIG. 5) the first lens 124 positioned. In some examples, the first lens 124 may be positioned between about 6mm and about 13mm away from the first aperture 126. In some forms, the first lens 124 may be a separate component positioned adjacent to the first light source 122, and in other examples, the first lens 124 may lens 124 are an integral component of the window 142. In some examples, the first aperture 126 may be formed by a horizontal line aperture or slit formed in the chassis 140. The first lens 124 and the first aperture 126 are oriented to receive light appearing from the first light source 122 and to the first bound light pattern 121 to shape. The first bonded light pattern 121 which may be in the form of a continuous or discontinuous line.
Similarly, the second guiding unit 130 comprises a second light source 132 which, in the example shown, is a Light Emitting Diode (LED). Other light sources can be used. The second light source 132 can be coupled to the circuit board 116, and can be positioned along the vertical axis V defined by the image sensor 112. In other words, the second guiding unit 130 can be vertically coplanarly positioned with the image sensor 112.
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The second guiding unit 130 further comprises a second lens 134 positioned adjacent or near the second light source 132 (as shown in FIGS. 2-6) and a second aperture 136 positioned adjacent or near the second lens 134 (as shown in FIG. 6). In some examples, the second lens 134 may be positioned between about 6mm and about 13mm away from the second aperture 136. In some forms, the second lens 134 may be a separate component positioned adjacent to the second light source 132, and in other examples, the second lens 134 may lens 134 is an integral component of the window 142. Further, in some examples, the second aperture 136 may be formed by a vertical line aperture or slit formed in the chassis 140. The second lens 134 and the second aperture 136 are oriented to receive light appearing from the second light source 132 and the second bound light pattern 131 which may be in the form of a continuous or discontinuous line.
In some examples, the first opening 126 can have dimensions of approximately 0.3 mm x 2.3 mm. The second opening 136 can have dimensions of approximately 1.33 mm x 0.3 mm. Other dimensions may be used depending on the desired field of view of the device 100.
The field of view FV is defined by the specific image processing system 110 and can vary between scanning devices 100. Nevertheless, each image processing system 110 has a nominal field of view which is shown as FV in FIG. 1. During an initial start-up and / or setting phase, the first guiding unit 120 and the second guiding unit 130 are positioned such that the first bound light pattern 121 approximately aligns and / or corresponds to the width of the horizontal component FVH and the second bound light pattern 131 approximately aligns and / or corresponds to the height of the vertical component FW on a specified image plane.
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Because the first bonded light pattern 121 and the second bonded light pattern 131 the central image axis A intersect in the same image plane, the patterns 121, 131 combine to form a cross pattern 138 defining a plurality of outer edges 138a, 138b, 138c, 138d of the image plane . As shown in FIG. 1, the directional units can be adjusted / arranged so that the outer edges 138a, 138b, 138c, 138d fall within the field of view of the image sensor 112. In some examples, the cross pattern 138, and thus the allowable field of view dimension 139, may be somewhat smaller than the field of view FV to ensure that object 106 is well contained within the field of view FV.
In the example shown, the first bonded light pattern 121 and the second bonded light pattern 131 work together to form a perpendicular cross pattern 138 with the first bonded light pattern 121 and the second bonded light pattern 131 forming a right angle. This can be seen more clearly in FIGs. 7A-7C showing the appearance of the cross pattern on an image plane. In particular, FIG. 7A the appearance of the pattern when the reader is positioned in a nominal range; FIG. 7B shows the appearance of the pattern when the reader is positioned in a far range; and FIG. 7C shows the appearance of the pattern when the reader is positioned in a near range. In other examples, the first bonded light pattern 121 and the second bonded light pattern 131 may cooperate to form a non-perpendicular cross pattern (not shown) and to cross each other (in an image plane) at an oblique angle. An example of a directional pattern provided by such a device is shown in FIGs. 8A-8C. In these embodiments, at least one of the first guiding unit 120 or the second guiding unit 130 may need to be shifted relative to one of the horizontal or vertical axes H, V. It should be noted that the thickness of the lines provided by the optical
BE2018 / 5668 patterns shown in FIGs. 1 and 7A-8C are only examples. This thickness can be adjusted as desired, allowing the crossover point size adjustment.
In still other examples, the first guiding unit 120 can be shifted relative to the image sensor 112 with a first rise or height relative to the central image axis A. This first rise or height can be zero or at the same level as and on a side of the central image axis A (as shown in the figures) or alternatively, the first rise or height can be a non-zero rise. The second guiding unit 130 may be offset from the image sensor 112 by a second rise or height relative to the central image axis which is different from the first rise or height and may be positioned below or above the central image axis A.
Thus arranged, the first bonded light pattern 121 and the second bonded light pattern 131 can cooperate to define the minimum field of view FV of the scanning apparatus 100. As such, by positioning a target object of interest 106 so that it falls within the cross pattern 138, the target object of interest 106 can be well obtained by the image processing system 110.
In addition, the first bonded light pattern 121 and the second bonded light pattern 131 intersect the central image axis A at the same point through the relative positioning of the first line unit 120, the second line unit 130, and the image sensor 112, which effectively eliminates parallax between the first line unit 120 and the second guideline unit 130 occurs. This intersection serves as an indicator of the center of the field of view, and can help with accurate alignment of the device 100. In environments where the distance between the image plane and the imaging device is varied, the first bound light pattern 121 and the second bound light pattern 131 intersect central image axis A still at the same point and thus still provide an accurate indicator of it
BE2018 / 5668 center of the image plane, which in turn reduces or eliminates the chance of scanning an incorrect target object of interest 106.
The systems and methods as described herein can only require an initial calibration to properly identify the relative positioning of the image sensor 112, the first guide unit 120, and the second guide unit 130. As such, it is not necessary to repeat the processing steps with every pull on the trigger, since after the initial calibration, the system is arranged to consistently illuminate the point corresponding to the center of the imaging device and / or the center of the field of view, what can be used in any consecutive scan. While the duration of a scan depends on lighting conditions (which determines the sensor lighting time) and image quality, the device 100 may be able to complete scans in less than about 60 ms, and may therefore improve scan times. This device can be advantageous because it bypasses the use of electromechanical and / or software components to align the sign, hence this time is not added to the total image acquisition time.
In some embodiments, a method for illuminating a target includes an optical scanner which includes an image sensor with a central image axis provided with the first and second illumination units, wherein both are offset from the image sensor. The first lighting unit is illuminated to provide a first bound light pattern which intersects the central image axis on an image plane. Similarly, the second illumination unit is illuminated to provide a second bound light pattern which intersects the first light pattern and the central image axis on the image plane.
Specific embodiments have been described in the foregoing description. However, it will be clear to a person skilled in the art that multiple adjustments and changes can be made without compromising
BE2018 / 5668 deviate from the scope of the inventions as set out in the claims below. Accordingly, the description and the figures must be viewed in a clarifying, rather than limiting, sense, and all such modifications are intended to be included in the scope of the present teachings. In addition, the described embodiments / examples / implementations should not be interpreted as mutually exclusive, and instead should be understood as potential to combine if such combinations are permitted in any way. In other words, any feature shown in any of the aforementioned embodiments / examples / implementations can be included in any of the other aforementioned embodiments / examples / implementations.
The benefits, benefits, solutions to problems, and any (/ all) element (s) that (can) cause (benefit), benefit, or solution (can) become more pronounced (Zkunnen) are not to be explained as a crucial, required, or essential feature or component in any or all of the claims. The invention is only defined by the appended claims, including some modifications made during the granting procedure of this application and all equivalents of those claims as issued.
In addition, in this document, related terms such as first and second, above and below, and the like, may only be used to distinguish an entity or action from another entity or action, without necessarily requiring or implying an actual relationship or order between such entities or promotions. The terms "include," "including," "has," "including," "includes," "includes," "includes," or any other variation thereof, are intended as a non-exclusive inclusion, so that a process, method, article, or device that includes, includes, contains a list of elements, not only contains those elements, but possibly contains other elements that are not explicitly listed
BE2018 / 5668 or that are not inherent in such a process, method, article, or device. An element preceded by "includes ... a," "has ... a," "includes ... a," "contains ... a," without limitation, does not exclude the existence of additional identical elements in the process, method, article, or device that has the element, is provided with, or contains. The term "one" is defined as one or more unless explicitly stated otherwise herein. The terms "substantially," "essential," "approximately," or any other variation thereof, are defined as being close to that understood by a person skilled in the art, and in a certain non-limiting embodiment, the term is defined as being within 10%, in another embodiment as being within 5%, in another embodiment as being within 1%, and in another embodiment as being within 0.5%. The term "coupled" as used herein is defined as connected, although not necessarily directly and not necessarily mechanically. A device or structure that is "configured" in a certain way is at least configured that way, but may also be configured in ways that are not listed.
It will be appreciated that some embodiments may include one or more generic or specialized processors (or "processing devices") such as microprocessors, digital signal processors, custom processors, and FPGAs (field-programmable gate matrixes), and unique, stored program instructions (including both software and firmware) that control one or more processors to perform, in combination with certain circuitry without processors, some, most, or all functions of the method and / or device described herein. Alternatively, some or all functions may be performed by a state machine that has no stored program instructions, or in one or more application specific integrated circuits (ASICs), in which each function or some
BE2018 / 5668 combinations of the functions are implemented as custom logic. Naturally, a combination of the two approaches can be used.
In addition, an embodiment may be embodied as a computer-readable storage medium provided with computer-readable code stored thereon for programming a computer (e.g., including a processor) to perform a method as described and claimed herein. Examples of such computer program products include, but are not limited to, a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a ROM (read-only memory), a PROM (programmable read-only memory), an EPROM (erasable programmable) read-only memory), an EEPROM (electrically erasable programmable read-only memory) and a flash memory. Furthermore, it can be expected that a person skilled in the art, notwithstanding possible significant difficulties and many design choices motivated by, for example, available time, current technology, and economic considerations, when guided by the concepts and principles described herein, will be able to easily with minimal experimentation. generating such software instructions and programs and integrated circuits.
The extract of the description is provided to allow the reader to quickly ascertain the nature of the technical description. It is submitted with the intention that it will not be used to explain or limit the scope of protection or the meaning of the claims. In addition, it can be seen in the foregoing detailed description that various features are grouped together in various embodiments for the purpose of simplifying the description. This method of describing should not be interpreted as expressing the intention that the claimed embodiments require more features than are explicitly stated in each claim. Rather, as the following conclusions show,
BE2018 / 5668 is inventive subject matter contained in less than all the features of a single described embodiment. Thus, the following claims are hereby incorporated in the detailed description, with each claim standing alone as a separately claimed subject matter.

权利要求:
Claims (23)
[1]
Conclusions
An image device for capturing an image of at least one object appearing in a field of view, the image device comprising: a housing;
an image sensor provided at least in part within the housing, the image sensor comprising a central image axis;
a first guideline unit offset from the image sensor; a second guideline unit offset from the image sensor; in which:
the first guiding unit is oriented to project a first bound light pattern which intersects the central image axis on an image plane; and the second guiding unit is oriented to project a second bound light pattern which intersects the first bound light pattern and the central image axis on the image plane.
[2]
The imaging apparatus of claim 1, wherein the first bonded light pattern and the second bonded light pattern combine to form a cross pattern defining a plurality of outer edges of the image plane, wherein the plurality of outer edges corresponds to an allowable field of view dimension of light received from a field of view which affects the image sensor.
[3]
The imaging device of claim 2, wherein the first light pattern and the second light pattern form a perpendicular cross pattern.
[4]
The imaging device of claim 2, wherein the first light pattern and the second light pattern form a non-perpendicular cross pattern.
[5]
The imaging device according to any of the preceding claims, wherein the first guiding unit comprises a first light source, a first lens, and a first aperture, being the first lens and the first aperture
BE2018 / 5668 oriented to receive light shining from the first light source, wherein the second guiding unit comprises a second light source, a second lens, and a second aperture, the second lens and the second aperture being oriented to receive light shining from the second light source.
[6]
The imaging device of claim 5, wherein the first aperture is defined by a first aperture in a chassis, wherein the second aperture is defined by a second aperture in the chassis.
[7]
The imaging device of claim 5 or 6, wherein the first lens and the second lens are formed at least in part by a frame coupled to the chassis.
[8]
The imaging device according to any of the preceding claims 5-7, wherein the first aperture comprises a horizontal line aperture which forms a bound horizontal line of light.
[9]
The imaging device according to any of the preceding claims 5-7, wherein the second aperture comprises a vertical line aperture which forms a bonded vertical line of light.
[10]
The display device of any one of the preceding claims 5-9, wherein the first aperture is approximately 0.3 mm by approximately 2.3 mm, wherein the second aperture is approximately 1.33 mm x 0.3 mm.
[11]
The imaging device according to any of the preceding claims, wherein the first guiding unit is horizontally coplanar positioned with the image sensor and the second guiding unit is vertically coplanar positioned with the image sensor.
[12]
The imaging device according to any of the preceding claims, wherein the first guiding unit is positioned along a first diagonal plane with respect to the image sensor, and wherein the second guiding unit is positioned along a second diagonal plane with respect to the image sensor, wherein the second diagonal plane is symmetrical with respect to the first diagonal plane.
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[13]
The imaging device according to any of the preceding claims, wherein the first guiding unit is offset from the image sensor with a first rise relative to the central image axis of the image sensor, and wherein the second guiding unit is offset from the image sensor with a second rise relative to the central image axis of the image sensor.
[14]
The imaging device according to any of the preceding claims, wherein the first guiding unit is positioned at and on a side of the central image axis, and wherein the second guiding unit is positioned below or above the central image axis.
[15]
The imaging device according to any of the preceding claims, wherein the first bound light pattern is one of a continuous line or a discontinuous line and wherein the second bound light pattern is one of a continuous line or a discontinuous line.
[16]
The imaging device of any preceding claim, wherein the first bonded light pattern is arranged to align with a horizontal component of the field of view on the image plane, wherein the second bonded light pattern is adapted to align with a vertical component of the image field of view on the image plane.
[17]
A method of illuminating a target with an optical scanner comprising an image sensor with a central image axis, the method comprising:
provided with a first lighting unit which is offset with respect to the image sensor;
provided with a second lighting unit which is offset with respect to the image sensor;
illuminating the first illumination unit for having a first bound light pattern which intersects the central image axis on an image plane; and
BE2018 / 5668 illuminating the second lighting unit for providing a second bound light pattern which intersects the first light pattern and the central image axis on the image plane.
[18]
The method of claim 17, wherein the first bound light pattern and the second bound light pattern combine to form a cross pattern defining a plurality of outer edges of the image plane.
[19]
The method of claim 18, wherein the first light pattern and the second light pattern combine to form a perpendicular cross pattern.
[20]
The method of claim 18, wherein the first light pattern and the second light pattern combine to form a non-perpendicular cross pattern.
[21]
An image device for capturing an image of at least one object that appears in a field of view, the image device comprising: a housing;
an image sensor provided at least in part within the housing, the image sensor comprising a plurality of photosensitive elements forming a substantially flat surface at least in part within the housing, the image sensor further comprising a central image axis which is normal on the substantially flat surface;
a first alignment unit offset from the image sensor; a second alignment unit offset from the image sensor; wherein the first directing unit comprises a lighting source and a first aperture defined by a first line, and the second directing unit comprises a second light source and a second aperture defined by a second line, wherein the first line and the second line intersect on the central image axis.
[22]
The display device of claim 21, wherein the first line and the second line intersect to form a right angle.
BE2018 / 5668
[23]
The display device of claim 21, wherein the first line and the second line intersect to form a non-right angle.

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同族专利:

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公开号 | 公开日

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GB2568376A|2019-05-15|

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US10067355B1|2018-09-04|

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GB2568376B|2020-08-19|

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AU2018226465A1|2019-04-11|

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DE102018123574A1|2019-03-28|

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AU2018226465B2|2020-08-13|

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CN109583251A|2019-04-05|

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BE1025909A1|2019-08-07|

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GB201815476D0|2018-11-07|

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法律状态:
2019-11-27| FG| Patent granted|Effective date: 20191031 |

优先权:

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申请号 | 申请日 | 专利标题

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US15718947|2017-09-28|

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US15/718,947|US10067355B1|2017-09-28|2017-09-28|Imaging devices having aimer systems|

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