• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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  • 优先权
    • 专利摘要:
    The present invention consists of transmitting optical wireless information systems in an illuminated environment, characterized by the fact of having a considerable energy saving compared to the current ones offered by the technique. The transmission takes place using the electromagnetic radiation present in the environment and this is modulated with the desired signal. This modulation occurs by altering the parameters of the reflection spectrum of the material following the presence of electric fields or electric currents applied as a function of the signal to be transmitted. The present invention is applicable in various fields of the art ranging from communications for mobile devices to transmissions between satellites up to wearable elements.
    公开号:CH712203A2
    申请号:CH00314/16
    申请日:2016-03-10
    公开日:2017-09-15
    发明作者:Pasquali Alessandro
    申请人:Slux Sagl；
    IPC主号:
    专利说明:

    Description Technical Sector [0001] Electronics and telecommunications using light beams. The present invention refers to systems for drastically reducing energy consumption in an optical transmission in a bright environment.
    State of the art [0002] Electromagnetic waves represent the current means of wireless telecommunications. Their spectrum, entirely explored in the course of the evolution of technology, covers frequencies ranging from wavelengths of tens of kilometers to wavelengths in the order of magnitude of nanometers and with the exception of a few wavelength ranges , it is almost all used and usable in security for making telecommunications. One of the key points considered in the realization of an emitter device of electromagnetic waves is its energy absorption.
    [0003] This absorption, in addition to being an important parameter in fixed devices, begins to become a decisive aspect for portable devices powered by batteries or storage systems with relatively limited capacity.
    [0004] Having energy savings of even just a few percentage points leads to a considerable change in the potential of the device.
    [0005] In the field of wireless telecommunications, one of the stages that absorbs most energy is the emission of the electromagnetic wave by the transmitter. This problem is present both in the field of radio-frequency emissions and in the field of optical emissions.
    [0006] In this last sector, currently the emission of modulated light is carried out thanks to the use above all of LED lamps that allow not to have an excessive consumption of energy in relation to the number of photons emitted.
    [0007] According to this principle in any case, from the point of view of the device it will not be theoretically and practically possible to come down to a lower energy absorption from the batteries than the energy radiated by the photons. Assuming not realistically that the efficiency of the whole system is 100%, the energy absorbed by the batteries should be at least as much as the energy of the photons emitted. Furthermore, it is known that the efficiency of such systems is not close to such high percentages.
    Presentation of the invention [0008] The present invention consists of a system that allows an optical transmitter with or without wires to emit a quantity of photons modulated with information to be transmitted to one or more receivers, whose overall radiated energy can be higher than energy absorbed by a source of energy like a battery.
    [0009] Through this invention the emission of the modulated light does not affect the power supply of the device.
    [0010] This system uses the light present in the environment and inserts information inside it.
    [0011] For information we shall mean analogical or non-analogical modulation intended for devices capable of receiving it.
    [0012] Ambient light is captured by a specific surface capable of reflecting it modulated with the desired information.
    [0013] The attainment of this process can be achieved through a series of steps which must follow the ambient light in order to be radiated with the desired modulation. These passages see the presence of substances, such as liquid crystals or electrochromatic materials, which change their optical properties as a function of an electric field or an electric current applied to them.
    [0014] The applied electric field or current, in fact, following a certain modulation of the desired signal, causes a change in the optical properties according to the modulation, which optical properties in turn determine a modulated radiation of the light incident on the surface.
    [0015] For modified optical properties it means for example the greater or lesser degree of reflection of light or the alteration of the shape of the reflection spectrum.
    Brief description of the drawings [0016]
    The drawing 1 represents a configuration of the invention: light incident on a flat surface and is reflected modulated.
    The drawing 2 represents an application of the invention: mobile transmitting telephone device using modulation of reflection spectrum in transmission. the drawing 3 represents the mobile device in the phase of receiving light rays modulated by a router equipped with the present invention.
    The drawing 4 represents the invention applied as a wall paint which modulates light in reflection spectrum and is picked up by the mobile device.
    Execution of the invention It is stated that: [0017] The invention remains so whether the light rays with which it interacts come from artificial sources or in the case in which natural sources originate.
    [0018] The invention remains so even if the light rays with which it interacts, follow optical paths and paths of every type.
    [0019] The invention remains so, both if the light rays with which it interacts belong to the visible spectrum, whether they belong to frequencies not perceptible to the human eye.
    [0020] The invention remains so whether the light rays with which it interacts come from a source, or whether they come from several sources at the same time.
    [0021] The invention remains the same whether the light rays with which it interacts are not modulated, or whether they are already modulated analogically or digitally or otherwise.
    [0022] The invention remains the same whether the modulating surface on which it affects before being modulated is a flat surface, and whether the surface on which the rays are incised is curvilinear or of a different shape.
    [0023] The invention is applicable to any sort of fixed or mobile device or system.
    [0024] Reflection spectrum modulation means both modulation in which the reflected spectrum is changed into the shape of its profile, and whether the profile is kept constant in the ratios between the maximum wavelengths reflected but the intensity of the peaks is changed.
    Modulation in gray mode [0025] With modulation in gray mode is meant a modulation in which the reflection spectrum is not altered mainly from the point of view of its shape, but is altered from the point of view of the luminous intensity of the reflected frequencies.
    [0026] For illustrative convenience this mode is illustrated separately from the color modulation. But this does not imply that they can be carried out and used simultaneously by the same device.
    [0027] Take as a reference fig. 1. It represents a reflecting surface on which is engraved a light beam «LO» which is reflected modulated, and identified as «LI». By reflection we do not necessarily mean reflection like the typical reflection of a mirror; we mean light emission in any direction due to incident light. Also included is the concept of material scattering and reflection intended as light emission due to non-absorption.
    [0028] In drawing 1 the reflective surface is divided into 3 layers. In this example the layer «C» represents a mechanical support on which the layer «B» is placed and protected. The latter instead represents a mirror layer but which changes the optical properties if an electric field is applied to it.
    [0029] The layer "B" can be associated with an LCD mirror whose degree of reflection can be adjusted according to the applied electrical voltage.
    [0030] In the present invention the electrical voltage of the layer "B" is made to vary as a function of the modulation to be transmitted. The voltage variation will generate a change in the degree of reflection of the LCD mirror which will result in a modulation of the rays that have interacted with the surface.
    [0031] In the case in which in layer «B» the reflection spectrum of another substance is to be changed, then the desired substance of which the overlying layer «B» will increase or decrease will be inserted as layer «C» the degree of light it reflects and radiates as a function of the electrical voltage applied as a function of modulation. The modulation of the "B" part as well as being performed in voltage can also be performed in current.
    [0032] The layer «A» represents the protective layer of the usually transparent LCD layer. In case it is necessary to select specific wavelengths that do not damage the LCD system, or to obtain different performances, it can act as an optical filter.
    Modulation in color mode [0033] The interpreted drawing also offers an explanation of the second possibility of modulation obtainable by the present invention. In this case we are talking about a modulation in which the reflection spectrum is altered as well as in the intensity of some peaks, even in its overall shape.
    [0034] The alteration of the shape of the reflection spectrum results in a change in the ratios of the various wavelengths emitted having as a final macroscopic effect a change in the color of the reflected light.
    [0035] This effect can be obtained with electrochromic materials which, coinciding with the application of an electric current, undergo a mutation in the disposition of the molecules or their state of oxidation to which a different reflection spectrum corresponds.
    [0036] To understand this mode, refer to fig. 1. In this example the interpretation will be electrochromic.
    [0037] The light source «S» radiates the environment and its light also affects the surface under examination. The «B» layer is assigned the function of electrochromatism being composed of materials that change reflection spectrum as a function of the change in their oxidation state which determines a different behavior of the electrons in the molecular orbitals.
    [0038] In order for this change of oxidation state to occur, it is necessary that the material of the layer "B" is subjected to an electric current.
    [0039] This current is applied through the layers «A» and «B» which are made with conductive materials and to which a potential difference is applied.
    [0040] Layer «A», in order for the reflection spectrum mutation to be appreciable at a distance, must be realized with a transparent conductive material such as ITO.
    [0041] In the present invention the stratification of the materials necessary for the mutation of a reflection spectrum can be carried out in various ways.
    [0042] According to the present invention it is possible to have depositions for example in PVD, in CVD or by deposition in successive layers performed by painting.
    [0043] In the present invention, for example, the basic conductor "C" can be painted, subsequently painted over the electrochromatic layer, and finally the transparent conductive material deposited above it.
    [0044] The color change can also be carried out with miniaturized grids of conductive material inside an electrochromatic material which, with a voltage applied as a function of the modulation, cause a change in the reflection spectrum of the material as a function of the modulation and of the data to be transmitted.
    Transmission and reception from a mobile device to a router [0045] Drawings 2, 3 and 4 represent other examples of execution of the invention applied to a mobile device such as a smartphone.
    [0046] In this case, the mobile device is provided with a part of the transmitting external structure in reflection spectrum modulation. This transmitting area, characterized by short oblique segments identified in fig. 2 with the name of «R» The «R» zone of the mobile device is connected inside this area where it receives the signals to be transmitted. These signals modulate the reflection spectrum of the transmitting material.
    [0047] The radiated light modulated after having been incident on the surface we identify it with "Al", while the ambient light incident on the surface before being modulated we identify it with "A0" and is coming in this example from a generic light source «A» for lighting. Natural sources of light such as the sun would be equally suitable. In fig. 3 instead we see the mobile device being received. The light rays hit its photo-sensitive area "F" after interacting with an example of router "B" mounting the present invention. The router is transmitted by modulating the «AO» ambient light which is then retransmitted modulated as «Al» thanks to the presence of a «R» reflection spectrum modulator on the router.
    [0048] Drawing 4 shows a phase of reception of the mobile device which captures light rays coming from a wall "B" to which a paint has been applied capable of modulating the reflection spectrum.
    Transmission between satellite devices [0049] In this example, represented in drawing 5, we see the invention applied to communications in space.
    [0050] In this case, each space device, satellites "Stl" and "St2", is equipped with a particular modulator in reflection spectrum identified by the element "R".
    [0051] This element is designed with a shape such that the reflection of the modulated sunlight takes place in the most omnidirectional way possible. In this case the spherical shape of a material characterized by a mirror-like metallic reflection is chosen.
    权利要求:
    Claims (10)
    [1]
    [0052] This sphere of reflective material is encapsulated in a modulator layer such as a vitreous shell containing liquid crystals. [0053] This vitreous shell receives the modulating signal from the satellite and therefore will modulate the reflected light which can be detected remotely from another satellite "St2". [0054] «S» represents the sun as a light source. «A0» are its unmodulated rays that have not yet interacted with the sphere, «Al» are the reflected rays transporting modulation following the interaction with the sphere system. Transmission from wearable elements [0055] In fig. 6 we observe a further example of execution of the invention. The modulation of the reflection spectrum takes place on a piece of clothing. This dress transmits light containing information which originates, before modulation, from the surrounding environment. [0056] The light source "S" is represented by the sun. Its "AO" beams affect the garment "G" and once reflected they contain the desired modulation. [0057] This modulation is obtained by the mutation as a function of the desired signal to be transmitted which, as per the present invention, alters the reflection properties of the light. [0058] Such result on a fabric is possible for example with nanostructured fibers which are able to change their optical properties on the basis of signals applied to them; alternatively with the presence of real metal wires inside the traditional fabric treated with materials that change the reflection spectrum as a function of the electric fields of the metal wires present. [0059] Another alternative hypothesized in the present example is a surface treatment of the fabric in layers. claims
    1. Optical transmitter characterized by the use of reflection spectrum modulation of materials irradiated by ambient light.
    [2]
    2. Wireless optical transmitter characterized by the use of modulation of reflection spectrum of materials irradiated by ambient light.
    [3]
    3. Transmitting optical transmitter in reflection spectrum modulation characterized by the modular use of liquid crystals.
    [4]
    4. Transmitting optical transmitter in reflection spectrum modulation characterized by the modular use of electrochromic materials.
    [5]
    5. Energy saving system in optical transmissions based on the use of transmissions in reflection spectrum modulation.
    [6]
    6. Transmitter characterized by radiating modulated electromagnetic waves whose energy does not come from the energy sources associated with the transmitter.
    [7]
    7. Paint characterized by modulating the light incident on it, with desired information.
    [8]
    8. Satellite characterized by the presence of a transmitting system in reflection spectrum modulation.
    [9]
    9. Reflective sphere characterized by modulating the light incident on it, with desired information.
    [10]
    10. Wearable element characterized by modulating the light incident on it, with desired information.
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    同族专利:
    公开号 | 公开日
    CH712203B1|2020-03-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH00314/16A|CH712203B1|2016-03-10|2016-03-10|Optical transmitter in spectroreflective modulation.|CH00314/16A| CH712203B1|2016-03-10|2016-03-10|Optical transmitter in spectroreflective modulation.|
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