• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. A PROJECTOR containing a horizontal table located in an opaque housing with a projection optical system located above it, a light source for working in a mode of projection, located under the table, and a light source for working in an epiprojection mode, as well as a covering on the table, a swiveling mirror and a light shaft for shielding the area between the table and the projection optical system, characterized in that, for the purpose of transportability, the coating is located in the middle part of the table, while the coating facing the projection optical system is made with a light reflector, and the edge parts of the table are made with light (O absorbing. -.: v: n with
    公开号:SU1153846A3
    申请号:SU813229951
    申请日:1981-01-05
    公开日:1985-04-30
    发明作者:Ян Эрик Астере Ульф
    申请人:Астаусболаген Хб Астере Энд Стокхаус (Фирма)；
    IPC主号:
    专利说明:

    2. The projector according to claim 1, characterized in that the light source for operating in the epiprojection mode is located above the table, and the surface of the coating facing the projection optical system is light absorbing, 3. The projector according to claims 1 and 2, l and h This is due to the fact that the coating is made in the form of a roll film. b wound on a shaft mounted in the pins on the edge of the table. 4, The projector according to claim 1, characterized in that it is provided with an additional light source, a holder for an additional projection material of a transparency type and a projection optical system interconnected and installed with the possibility of insertion onto the optical axis of the main projection optical system.
    one
    This invention relates to the optomechanical industry.
    Closest to the invention
    is an epidemioprojector, which contains a horizontal table located in an opaque housing, over which a projection optical system is located, a source of light for working in a mode of projection, located under the table, and a light source dp of working in a mode of projection, as well as an overlay on the table, a rotary mirror n light shaft dp shielding area between the table and the projection optical system lj.
    However, the projector is not sufficiently transportable.
    The aim of the invention is to facilitate transportability of the projector,
    This goal is achieved by the fact that in a projector containing a horizontal table located in an opaque housing, over which the projection optical system is located, a light source for working in a mode of projection, located under the table, and a light source for working in the mode of epiprojection, as well as superimposed on the table the cover is a turning mirror and a light shaft for shielding the zone between the table and the projection optical system, the cover is located in the middle part of the table, with the side of the cover facing the The optics optical system is made reflective, and the edge parts of the table are light absorbing.
    The light source for operation in the epiprojection mode is located above the table, and the surface of the coating facing the projection optical system is light absorbing.
    The coating is made in the form of a roll of film wound on a shaft, mounted in the pins on the edge of the table.
    The projector is equipped with an additional light source, a holder for an additional projected material of a slide-type type, and a projection optical system, interconnected and installed with the possibility of inputting into the optical axis the main projection optical system.
    Fig, 1 shows schematically the first version of the projector, a vertical section; FIG. 2 is a section A-A in FIG. 1; Fig, 3 - the second version of the projector, the cross section; Fig, 4 is a variant of the projector optics.
    The projector contains a horizontal table 1, a projection optics of lenses 2-4 mounted above the table 1 at its center, a light source 5 that is placed above the table 1 and installed to illuminate it, a refractive mirror 6 for the horizontal deflection of light, reflecting vertically upwards from table 1, and the light shaft 7, which partially separates the area between the optics 2,3 and 4 and table 1 from the environment. At one edge of the table 1, a stationary winding shaft 8 is mounted. Shaft 8 rotates in pins (not shown) and represents a usual solid rod. The roll 9 may be wound on the shaft 8, which is spring-loaded (not shown) to wind the roll, and furthermore, the shaft preferably has a winding latch (not shown) which is released as a result of the limited extension of the roll 9 in the direction of unwinding. Light shaft 7, which can be in the form of bellows or folding enclosing panels, has side holes d through which you can change the projected material and / or pickup of the projected material in the projector. The opening may be closable. According to the first embodiment of the projector, the upper surface of the roll 9 can be a light reflector so that light from the light source 5 reflects upward through the lenses 2, 3 and 4, whereby the projector can project frames (not shown) of large sized radios that are placed on the roll 9. In this case, the surface of the table 1 is light absorbing, preferably matte and black. When the roll 9 is wound on the shaft 8, an opaque projected material can be placed on the surface of the table 1 such that when the light source 5 illuminates the projected material, its image can be projected through the optics. The surface of the table 1 can be designed to emit light vertically up or allow light to illuminate the surface of the table 1 from below, or to make the surface of the table 1 reflective to reflect light from the light source 5, while the surface of the roll 9 exposes light-absorbing, preferably matte and black. Mirror 6 is made so that it can be rotated around a horizontal axis, and this allows the projection directions to be switched, if necessary, in two opposite directions in the horizontal plane. As shown in FIG. 3, a plate-shaped cover 10 is applied to the table, which is pivotally mounted on the edge of the table 1. In this case, the light shaft 7 is constructed in a straight prismatic configuration, so that the plate 10 may partially cover the surface of the table 1, may partly turn to the position close to the side wall of the shaft 5. The surfaces of the plate 10 and the table 1. Respectively, they can be made the same as in the 4g version. 1 and 2,. light absorbing and light reflecting respectively or vice versa. FIG. 3 shows an embodiment in which the surface of the table 1 b. Is reflective, as a result of which the light source 11 is installed below the surface of the table 1, and in which the surface of the table 1 is formed by a conventional lens 12, therefore the surface of the plate 10 must be light absorbing. You can make the inner walls of the light shaft 7 reflecting at least in the case when the light shaft 7 is designed in the form of vertically oriented walls. To project a transparent; shea opaque projected material that is placed on the stand. At 1 and on the plate 10 or roll 9, a lens 2 is used, which may consist of a simple converging (positive) lens. If it is necessary to obtain a projection magnification of a microfiche or other small-sized transparency frame, lens 2 can be combined with lenses 3 and 4, as shown in FIG. 1-3, wherein the holder 13 for such a projected material is respectively connected to objects 3 and 4. The optics preferably comprise a first lens consisting of a lens 2 which is rigidly mounted in the upper part of the projector below the opening b for the projection beam. The second lens, which contains the collecting (positive) lenses 3 and 4, respectively, is connected to the vertical shaft 16 by means of the shafts 14 and 15, respectively. The lenses 3 and 4 are pivotally mounted with the ability to move into and out of the projection beam. The shaft 15, respectively, also supports the holder 13 for a micro filament or a small filmstrip. A separate light source 17 can be mounted on shafts 15 sh 16.
    If necessary, you can do without a lens, as well as without a separate light source 17.
    When interacting with the first lens, the second lens of lenses 3 and A serves to form the focal plane at the holder 13, thereby providing a greater increase in this projection material than the projection material mounted on the surface of the table 1.
    Preferably, a lens of lens 2 is mounted to form on the Projection surface a projected image of the projected material in a holder 13 of the same size as the projected image of the projected material that is placed on the table 1 and is passed through the lens 2,
     In one of the options, the distance between the table 1 and the lens 2 of the projector is about 32 cm and optics for a dual purpose can be used.
    Lens 2 is a flat-convex, flat surface facing upwards; a convex surface has a radius of curvature of about 150 mm. Lens 3 two co-convex lenses with the same radius of curvature of about 200 mm. Lens 4 is a flat lens, the curling surface faces up, radius of curvature is about 100 mm. The air gap between lenses 2 and 3 is about 10 mm, and the air gap between lenses 2 and 4 is about 130 mm.
    The proposed projector is portable, which makes it easy to transport.
    Aa
    FIG, g
    权利要求:
    Claims (4)
    [1]
    1. The PROJECTOR, comprising a horizontal table located in an opaque case, above which there is a projection optical system, a light source for working in overhead projection mode, located under the table, and a light source for working in overhead projection mode, as well as a coating, a swivel mirror and a light shaft for screening the area with a table and a projection optical system, characterized in that, in order to facilitate transportability, the coating is located in the middle of the table, with the side the coating facing the projection optical system is made reflective, and the 'edge parts of the table are made light-absorbing.
    [2]
    2. The projector according to claim 1, characterized in that the light source for operating in epiprojection mode is located above the table, and the surface of the coating facing the projection optical system is made light-absorbing.
    [3]
    3. The projector according to claims 1 and 2, which includes the fact that the coating is made in the form of a roll film wound on a shaft mounted in pins on the edge of the table.
    [4]
    4, The projector according to claim 1, characterized in that it is provided with an additional light source, a holder for additional projected material of a slide type and a projection optical system, interconnected and installed with the possibility of inputting the main projection optical system onto the optical axis.
    类似技术:
    公开号 | 公开日 | 专利标题
    US3240113A|1966-03-15|Pickup and projection mirror system for panoramic photography and panoramic picture projection at horizontal plane angles
    KR20010045326A|2001-06-05|Reflection type projector using micro-mirror device
    US4113367A|1978-09-12|Roof reflective polygon scanning apparatus
    CN102033403B|2012-10-10|Projection-type image display device
    CN107003497B|2019-05-31|Projector optical apparatus and projector
    US3285126A|1966-11-15|Desk level overhead projector
    SU1153846A3|1985-04-30|Projector
    US4338006A|1982-07-06|Overhead projector
    US4156561A|1979-05-29|Desk level overhead projector
    US2914997A|1959-12-01|Combined range and view finder for cameras
    KR920701852A|1992-08-12|Monocular telescope
    US3997258A|1976-12-14|Film reader
    US3876283A|1975-04-08|Apparatus for producing oblique illumination
    US2372430A|1945-03-27|Camera
    US2847902A|1958-08-19|Portable projection apparatus for diapositives and microfilms
    US3915568A|1975-10-28|Overhead projector
    US3781102A|1973-12-25|Modular structure for viewing apparatus
    US3904286A|1975-09-09|Microfilm reader
    US2786387A|1957-03-26|Reflecting mirror optical projector apparatus
    KR20010045327A|2001-06-05|Reflection type projector using micro-mirror device
    US4157214A|1979-06-05|Apparatus for showing microdocuments
    US3516733A|1970-06-23|Projection head for compact overhead projector
    CA1108449A|1981-09-08|Image stabilization system for continuous film scanning apparatus
    US4176934A|1979-12-04|Arrangement of a photographic camera
    US4049346A|1977-09-20|Camera projector with turret
    同族专利:
    公开号 | 公开日
    WO1980001210A1|1980-06-12|
    DE2964575D1|1983-02-24|
    JPS55501071A|1980-12-04|
    AT2287T|1983-02-15|
    EP0026177B1|1983-01-19|
    US4343538A|1982-08-10|
    EP0026177A1|1981-04-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1176485A|1912-07-31|1916-03-21|Spencer Lens Co|Projection apparatus.|
    GB191403544A|1914-02-11|1915-07-29|Raphael Eduard Liesegang|Improvements relating to Optical Projection Apparatus.|
    US2596393A|1949-05-23|1952-05-13|Gerald Harold G Fitz|Attachment for opaque projection by transparency projectors|
    US3482911A|1967-03-20|1969-12-09|William A Noble|Image projection apparatus|
    US3525566A|1968-07-24|1970-08-25|Gerald Altman|Projection devices and graphic materials therefor|
    DE2453767A1|1974-11-13|1976-05-20|Michael Ing Grad Meyer|Dual projector for slides and writing - may project diapositive slide directly or via writing plate to give picture with additional writing|
    DE2815036A1|1978-04-07|1979-10-18|Wesegang Fa Ed|Overhead projector with writing surface on base - has column to support mirror and lens with slide projector mounted above as independent unit|US4561740A|1984-06-06|1985-12-31|Minnesota Mining And Manufacturing Company|Dual-magnification rear projection lectern|
    US4644934A|1985-05-03|1987-02-24|Kaus David P|Solar energy heating system|
    US5033842A|1990-02-13|1991-07-23|Tam Kam T|Episcopic projector|
    CN1034531C|1992-08-03|1997-04-09|吴有边|Light intensifying projection technology and its device|
    US5695267A|1996-09-30|1997-12-09|Predebon; Roberto|Photo viewing assembly|
    CN106842510B|2017-03-30|2019-06-25|明基智能科技（上海）有限公司|Optical projection system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7812542A|SE414085B|1978-10-04|1978-12-06|Projector|
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