CN211427018U - Projection light path, projector and projection system - Google Patents
Projection light path, projector and projection system Download PDFInfo
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- CN211427018U CN211427018U CN202020360416.5U CN202020360416U CN211427018U CN 211427018 U CN211427018 U CN 211427018U CN 202020360416 U CN202020360416 U CN 202020360416U CN 211427018 U CN211427018 U CN 211427018U
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Abstract
The utility model discloses a projection light path, projecting apparatus and projection system, wherein, this projection light path includes: the three-color lamp module is provided with a light source output end; the filter membrane is arranged at the output end of the light source and is used for filtering ultraviolet rays; and the light path guiding module is arranged on one side, back to the three-color lamp module, of the filter membrane, and is provided with a light inlet and a light outlet, the light path guiding module comprises a silicon-based liquid crystal panel, light rays after ultraviolet rays are filtered are transmitted into the light inlet, the silicon-based liquid crystal panel reflects the light rays after the ultraviolet rays are filtered, and the light rays reflected by the silicon-based liquid crystal panel are projected out from the light outlet. The utility model discloses the projection light path improves and avoids the lens to be damaged, improves projection equipment's life.
Description
Technical Field
The utility model relates to a projection equipment technical field, in particular to projecting apparatus and projection system of projection light path, applied this projection light path.
Background
In daily life, a projection device is often needed, and a user watches movie and television works through the projection device. Because the lens group in the projection equipment is the resin material, when projection equipment sent the light source, the ultraviolet ray of light source makes the lens group of resin material produce the oxidation easily, leads to the lens group luminousness of resin material to descend, and then leads to the formation of image effect of projecting apparatus poor.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a projection light path aims at improving the life of projecting apparatus.
In order to achieve the above object, the present invention provides a projection light path including:
the three-color lamp module is provided with a light source output end;
the filter membrane is arranged at the output end of the light source and is used for filtering ultraviolet rays; and
the light path direction module is arranged on one side, back to the three-color lamp module, of the filter membrane, the light path direction module is provided with a light inlet and a light outlet, the light path direction module comprises a silicon-based liquid crystal panel, light rays after ultraviolet rays are filtered are transmitted into the light inlet, the silicon-based liquid crystal panel reflects the light rays after the ultraviolet rays are filtered, and the light rays reflected by the silicon-based liquid crystal panel are projected out from the light outlet.
The utility model discloses an in the embodiment, the projection light path still includes even slide, even slide is located the light source output end with go into between the light mouth for the even derivation of light that sends the tricolor light module.
In an embodiment of the present invention, the light homogenizing sheet is located between the filter membrane and the light path guiding module.
In an embodiment of the present invention, the light path guiding module further includes a first one-way light-transmitting lens, a first condensing lens, and a light-emitting unit;
the first condenser lens is arranged corresponding to the light inlet, the light inlet surface of the first one-way light-transmitting mirror is arranged towards the first condenser lens, the reflecting surface of the first one-way light-transmitting mirror is arranged corresponding to the silicon-based liquid crystal panel and the light outlet unit, and the light outlet unit is arranged corresponding to the light outlet;
the light rays sequentially pass through the first condensing lens, the silicon-based liquid crystal panel, the first one-way light-transmitting mirror and the light-emitting unit.
In an embodiment of the present invention, the light emitting unit includes a second condenser lens, a first adjusting convex lens, a collimator lens and a light expanding lens, which are disposed adjacent to the first one-way light-transmitting lens, and the second condenser lens, the first adjusting convex lens, the collimator lens and the light expanding lens are sequentially arranged.
In an embodiment of the present invention, the light emitting unit further includes an aperture, the second condensing lens, the aperture, the first adjusting convex lens, the collimating lens and the light expanding lens are sequentially arranged, and the aperture is used for adjusting the light intensity of the light emitting unit.
In an embodiment of the present invention, the three-color lamp module includes a first lamp set unit, a second lamp set unit, a third lamp set unit, a second one-way light-transmitting mirror and a third one-way light-transmitting mirror;
the second one-way light-transmitting mirror and the third one-way light-transmitting mirror are arranged in parallel, the reflecting surface of the second one-way light-transmitting mirror is arranged corresponding to the reflecting surface of the third one-way light-transmitting mirror, and the reflecting surface of the third one-way light-transmitting mirror is also arranged corresponding to the output end of the light source;
the first lamp group unit corresponds the income plain noodles setting of the one-way printing opacity mirror of second, the second lamp group unit corresponds the plane of reflection setting of the one-way printing opacity mirror of second, the third lamp group unit corresponds the income plain noodles setting of the one-way printing opacity mirror of third.
In an embodiment of the present invention, the three-color lamp module further includes a third light condensing lens, and the third light condensing lens is disposed between the second one-way light-transmitting mirror and the third one-way light-transmitting mirror.
The embodiment of the utility model also provides a projector, including the control unit and the projection light path, the control unit is connected with the tricolor lamp module and the light path direction module electricity;
the control unit controls the tricolor lamp module to irradiate light to the silicon-based liquid crystal plate of the light path guiding module and controls the silicon-based liquid crystal plate to reflect the light so as to enable the light to be projected and imaged through the light path guiding module.
The embodiment of the utility model provides a projection system is still provided, reach including control terminal, light curtain the projecting apparatus, the light curtain with the projecting apparatus sets up relatively, control terminal with the control unit electricity is connected, control terminal controls the control unit, so that the projecting apparatus shines light to the light curtain, the light curtain formation of image.
The utility model discloses technical scheme is through setting up the filter membrane between three-color lamp module piece and light path direction module, the filter membrane sends the ultraviolet ray of light with three-color lamp module piece and filters, avoids the ultraviolet ray to damage the resin lens in the light path direction module piece, improves the life of projecting apparatus.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a projection optical path of the present invention;
fig. 2 is a diagram showing the optical path transmission of the projection optical path in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | Three- |
32 | First one-way light-transmitting mirror |
| 12 | First |
33 | First condenser lens |
| 13 | Second lamp set unit | 34 | |
| 14 | Third lamp set unit | 341 | Aperture |
| 15 | Second one-way light-transmitting |
342 | |
| 16 | Third one-way light-transmitting |
343 | First adjusting convex mirror |
| 17 | Third |
344 | |
| 2 | |
345 | Light-diffusing |
| 3 | Light path guide module | 4 | Light homogenizing |
| 31 | Silicon-based liquid crystal panel |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a projection light path. Fig. 1 is a schematic structural diagram of an embodiment of a projection optical path according to the present invention; referring to fig. 2, an optical path transfer diagram of the projection optical path in fig. 1 is shown.
In the embodiment of the present invention, as shown in fig. 1 and shown in fig. 2, the projection light path includes: the three-color lamp module 1, the filter membrane 2 and the light path guide module 3; the three-color lamp module 1, the filter membrane 2 and the light path guide module 3 are sequentially installed, that is, after the three-color lamp module 1 emits light, the light passes through the filter membrane 2, the filter membrane 2 filters ultraviolet rays in the light, so that the light passing through the filter light is processed by the light path guide module 3, and finally the light path guide module 3 emits the light after the light processing to realize imaging. The structure of the projection light path of the present invention is specifically as follows:
the three-color lamp module 1 is provided with a light source output end (not shown); it can be understood that the three-color lamp module 1 includes a red lamp module, a green lamp module and a blue lamp module, and light rays emitted by the red lamp module, the green lamp module and the blue lamp module are converged into the same light path. The red light module comprises a first lamp bead (not shown in the figure) and a first convex mirror (not shown in the figure), and the first convex mirror is used for converging light rays emitted by the first lamp bead; the green light module comprises a second lamp bead (not shown) and a second convex mirror (not shown), and the second convex mirror is used for converging light rays emitted by the second lamp bead; the blue lamp module comprises a third lamp bead (not shown in the figure) and a third convex mirror (not shown in the figure), and the third convex mirror is used for converging light rays emitted by the third lamp bead.
The filter membrane 2 is arranged at the output end of the light source and is used for filtering ultraviolet rays. Understandably, the green light membrane is lead-containing glass; alternatively, the glass surface may be coated with a polarizing filter layer.
The light path guiding module 3 is disposed on one side of the filter membrane 2 facing away from the three-color lamp module 1, the light path guiding module 3 is provided with a light inlet (not identified in the figure) and a light outlet (not identified in the figure), the light path guiding module 3 includes a silicon-based liquid crystal panel 31, light after filtering ultraviolet rays is transmitted from the light inlet, the silicon-based liquid crystal panel 31 reflects light after filtering ultraviolet rays, and light reflected by the silicon-based liquid crystal panel 31 is projected from the light outlet. The optical path guiding module 3 may include a plurality of optical lenses, the optical lenses guide the light rays transmitted from the light inlet to the silicon-based liquid crystal panel 31, and/or the optical lenses are further configured to guide the light rays reflected by the silicon-based liquid crystal panel 31 out of the light outlet; alternatively, the optical lens can be a concave lens, a one-way mirror, and the like; on the other hand, the liquid crystal on silicon panel 31 is a common type liquid crystal on silicon panel 31, and is not limited herein on the premise that the liquid crystal on silicon panel 31 can reflect light rays coming from the light inlet.
The utility model discloses in, through setting up filter membrane 2 between three-color lamp module 1 and light path guide module 3, filter membrane 2 avoids the resin lens in the ultraviolet ray damage light path guide module 3, improves the life of projecting apparatus with the ultraviolet ray filtration that three-color lamp module 1 sent light.
To facilitate understanding of the optical path directing module 3. The light path guiding module 3 may be provided with a silicon-based liquid crystal panel 31 and an optical lens group; the optical lens group can include a plurality of convex lenses, a plurality of concave lenses, a plurality of one-way mirrors and a plurality of plane mirrors. The light transmitted into the light inlet is guided to the silicon-based liquid crystal panel 31 through the optical lens group, and after the silicon-based liquid crystal panel 31 reflects the light, the light reflected by the silicon-based liquid crystal panel 31 is guided out from the light outlet through the optical lens group.
For easy understanding, the projection light path is disposed in a housing (not shown); and a positioning structure is arranged in the shell and used for fixing the three-color lamp module 1, the filter membrane 2 and the light path guide module 3.
The utility model discloses an in the embodiment, the projection light path still includes even light piece 4, and even light piece 4 is located the light source output and goes into between the light mouth for the even derivation of light that sends tricolor light module 1. It can be understood that the light-homogenizing sheet 4 is made of a light-transmitting material, and the light-homogenizing sheet 4 includes a main body (not shown) and a compound eye structure (not shown) disposed on the main body; that is, the main body is provided with two side surfaces, one side surface is arranged over against the output end of the light source, and the other side surface is arranged over against the light inlet; and a compound eye structure is arranged on the side surface of the main body opposite to the light inlet. After passing through the main body, the light rays transmitted from the output end of the light source are uniformly emitted through the compound eye structure. On the other hand, a compound eye structure can also be arranged on the side surface of the main body opposite to the output end of the light source.
The utility model discloses in, be located light source output and go into the structure between the light mouth through adopting even slide 4 for the light that spreads into even slide 4 is evenly derived, and then makes the light that spreads into light path direction module 3 more balanced avoid appearing local bright spot.
In an embodiment of the present invention, the light equalizing sheet 4 is located between the filter membrane 2 and the light path guiding module 3. The dodging sheet 4 is arranged on the filter membrane 2 and is arranged on the light path guide module 3, so that the ultraviolet rays are filtered out and shine into the dodging sheet 4, the dodging sheet 4 is prevented from being damaged, and the service life of the projection light path is prolonged.
In an embodiment of the present invention, the light path guiding module 3 further includes a first one-way light-transmitting lens 32, a first condensing lens 33, and a light-emitting unit 34; the first condenser lens 33 is arranged corresponding to the light inlet, the light inlet surface of the first one-way light-transmitting mirror 32 is arranged facing the first condenser lens 33, the reflecting surface of the first one-way light-transmitting mirror 32 is arranged corresponding to the silicon-based liquid crystal panel 31 and the light outlet unit 34, and the light outlet unit 34 is arranged corresponding to the light outlet; the light sequentially passes through the first condenser lens 33, the liquid crystal on silicon panel 31, the first one-way light-transmitting mirror 32 and the light-emitting unit 34.
The utility model discloses an in practical application, light spreads into first condensing lens 33 from going into the light mouth and realizes spotlight, and light after first condensing lens 33 will gather leads to silica-based liquid crystal board 31 through first one-way printing opacity mirror 32, and silica-based liquid crystal board 31 reflected light is back, and light leads to light-emitting unit 34 through the plane of reflection of first one-way printing opacity mirror 32, and light-emitting unit 34 projection is to the light that spreads into light-emitting unit 34 into.
It should be understood that, in order to enhance the light focusing efficiency, a convex mirror (not shown) may be further disposed between the first condensing lens 33 and the dodging sheet 4, and the convex mirror performs a first light condensing on the light guided out from the dodging sheet 4, and performs a second light condensing through the first condensing lens 33, so as to achieve light condensing.
In an embodiment of the present invention, the light emitting unit 34 includes a second condensing lens 342, a first adjusting convex lens 343, a collimating lens 344 and a light expanding lens 345 disposed adjacent to the first one-way light transmitting lens 32, and the second condensing lens 342, the first adjusting convex lens 343, the collimating lens 344 and the light expanding lens 345 are sequentially arranged. It is understood that the second condenser lens 342 is a reflecting surface corresponding to the first one-way light-transmitting mirror 32, and when the first one-way light-transmitting mirror 32 reflects the light reflected by the liquid crystal on silicon panel 31, so that the reflected light illuminates the second condenser lens 342, the second condenser lens 342 focuses the reflected light to realize the inversion of the image. Then, the focused light is guided to the first adjusting convex mirror 343 and the collimating mirror 344 so that the formed image is inverted from top to bottom; that is, the first adjusting convex mirror 343 and the collimator mirror 344 are located outside the focal length of the second condenser lens 342. Finally, the image from the collimator 344 is expanded by the expander lens 345.
It is understood that the collimating mirror 344 is a plano-convex lens, the convex surface of which is disposed toward the first adjusting convex mirror 343. Optionally, the first adjusting convex mirror 343 is a convex lens.
It will be appreciated that the expander is a plano-concave lens, the concave surface of which is disposed towards the collimating mirror 344. The plane of the plano-concave lens is arranged towards the light outlet.
In an embodiment of the present invention, the light emitting unit 34 further includes an aperture 341, the second focusing lens 342, the aperture 341, the first adjusting convex lens 343, the collimating lens 344 and the light expanding lens 345 are sequentially arranged, and the aperture 341 is used to adjust the light intensity of the light emitting unit 34.
It is understood that the aperture 341 is disposed at the focal point of the second condenser lens 342, and the intensity of the light is adjusted by the aperture 341 to make the outgoing light softer. Alternatively, the aperture 341 is a common type of aperture 341 device.
The diaphragm 341 is an iris type diaphragm 341. That is, the diaphragm 341 includes a plurality of arc-shaped thin metal blades (not shown) overlapped with each other, and the plurality of arc-shaped thin metal blades surround to form a central circular hole, and the size of the central circular hole is changed by the mutual approaching or departing of the plurality of arc-shaped thin metal blades. The diaphragm 341 may include 6 to 18 arc-shaped thin metal blades.
Alternatively, the more arcuate thin metal blades, the closer the hole shape is to circular.
Alternatively, the diaphragm 341 may include 6 arc-shaped thin metal blades.
In an embodiment of the present invention, the three-color lamp module 1 includes a first lamp set unit 12, a second lamp set unit 13, a third lamp set unit 14, a second one-way light-transmitting mirror 15 and a third one-way light-transmitting mirror 16;
the second one-way light-transmitting mirror 15 and the third one-way light-transmitting mirror 16 are arranged in parallel, the reflecting surface of the second one-way light-transmitting mirror 15 is arranged corresponding to the reflecting surface of the third one-way light-transmitting mirror 16, and the reflecting surface of the third one-way light-transmitting mirror 16 is also arranged corresponding to the output end of the light source;
the first lamp group unit 12 is disposed corresponding to the light incident surface of the second one-way light-transmitting mirror 15, the second lamp group unit 13 is disposed corresponding to the reflection surface of the second one-way light-transmitting mirror 15, and the third lamp group unit 14 is disposed corresponding to the light incident surface of the third one-way light-transmitting mirror 16.
It is to be understood that the first lamp set unit 12 may be a red lamp module; the second lamp group unit 13 may be a green lamp module; the third lamp set unit 14 may be a blue lamp module. Alternatively, the second lamp set unit 13 may be a red lamp module; the first lamp set unit 12 may be a green lamp module; the third lamp set unit 14 may be a blue lamp module. Alternatively, the third lamp set unit 14 may be a red lamp module; the second lamp group unit 13 may be a green lamp module; the first lamp set unit 12 may be a blue lamp module. Alternatively, the second lamp set unit 13 may be a red lamp module; the third lamp set unit 14 may be a green lamp module; the first lamp set unit 12 may be a blue lamp module. That is, the first lamp set unit 12, the second lamp set unit 13 and the third lamp set unit 14 are respectively used for emitting red light, green light and blue light.
The utility model discloses in, through the parallel setting of the one-way printing opacity mirror 15 of second and the one-way printing opacity mirror 16 of third, the plane of reflection of the one-way printing opacity mirror 15 of second corresponds the setting of the plane of reflection of the one-way printing opacity mirror 16 of third, the plane of reflection of the one-way printing opacity mirror 16 of third still corresponds the light source output end setting, and make first banks unit 12, second banks unit 13 and third banks unit 14 correspond one-way printing opacity mirror 15 of second and third and pass through mirror 16 respectively, avoid first banks unit 12, second banks unit 13 and third banks unit 14 range upon range of, avoid the light of production to be sheltered from. On the other hand, the light rays emitted by the first lamp group unit 12, the second lamp group unit 13 and the third lamp group unit 14 are reflected through the second one-way light-transmitting mirror 15 and the third one-way light-transmitting mirror 16, so that the space utilization rate is improved, and the structure of reflecting through a plurality of mirror surfaces is avoided.
In an embodiment of the present invention, the three-color lamp module 1 further includes a third condensing lens 17, and the third condensing lens 17 is disposed between the second one-way light-transmitting mirror 15 and the third one-way light-transmitting mirror 16.
The utility model discloses in, through set up third condensing lens 17 between one-way printing opacity mirror 15 of second and the one-way printing opacity mirror 16 of third, assemble the light of first banks unit 12 and second banks unit 13 through third condensing lens 17, avoid light intensity's loss.
The utility model discloses still provide a projecting apparatus (not shown), this projecting apparatus includes the control unit (not shown) and projection light path, and the concrete structure of this projection light path refers to above-mentioned embodiment, because this projecting apparatus has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. The control unit is electrically connected with the three-color lamp module 1 and the light path guiding module 3; the control unit controls the three-color lamp module 1 to irradiate light to the silicon-based liquid crystal panel 31 of the light path guiding module 3, and controls the silicon-based liquid crystal panel 31 to reflect the light, so that the light is projected and imaged through the light path guiding module 3.
It can be understood that the projector includes a housing (not shown), the housing is provided with an accommodating space and a light outlet hole communicating with the accommodating space, the projection light path is positioned in the accommodating space, and the light outlet hole corresponds to the light outlet.
Optionally, the control unit is a common type of single chip microcomputer.
The utility model discloses still provide a projection system (not shown), this projecting apparatus includes control terminal (not shown), light curtain (not shown) and projection light path, and the concrete structure of this projection light path refers to above-mentioned embodiment, because this projecting apparatus has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is not repeated here one by one again. The light curtain and the projector are arranged oppositely, the control terminal is electrically connected with the control unit, and the control terminal controls the control unit so that the projector irradiates light to the light curtain to form images.
It is understood that the control terminal may be a computer, a personal computer, a tablet computer, a mobile phone, and the like.
The above is only the optional embodiment of the present invention, and not therefore the scope of the present invention is limited, all under the inventive concept, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. A projection light path, comprising:
the three-color lamp module is provided with a light source output end;
the filter membrane is arranged at the output end of the light source and is used for filtering ultraviolet rays; and
the light path direction module is arranged on one side, back to the three-color lamp module, of the filter membrane, the light path direction module is provided with a light inlet and a light outlet, the light path direction module comprises a silicon-based liquid crystal panel, light rays after ultraviolet rays are filtered are transmitted into the light inlet, the silicon-based liquid crystal panel reflects the light rays after the ultraviolet rays are filtered, and the light rays reflected by the silicon-based liquid crystal panel are projected out from the light outlet.
2. The projection optical path of claim 1, further comprising a light homogenizing sheet, wherein the light homogenizing sheet is located between the light source output end and the light inlet, and is used for uniformly guiding out light emitted by the three-color lamp module.
3. The projection optical path of claim 2, wherein the light homogenizing plate is located between the filter membrane and the optical path directing module.
4. The projection optical path of claim 1, wherein the optical path directing module further comprises a first one-way light-transmitting mirror, a first condensing lens, and a light-exiting unit;
the first condenser lens is arranged corresponding to the light inlet, the light inlet surface of the first one-way light-transmitting mirror is arranged towards the first condenser lens, the reflecting surface of the first one-way light-transmitting mirror is arranged corresponding to the silicon-based liquid crystal panel and the light outlet unit, and the light outlet unit is arranged corresponding to the light outlet;
the light rays sequentially pass through the first condensing lens, the silicon-based liquid crystal panel, the first one-way light-transmitting mirror and the light-emitting unit.
5. The projection optical path of claim 4, wherein the light exit unit comprises a second condenser lens, a first adjusting convex lens, a collimator lens and a light expansion lens, which are disposed adjacent to the first one-way light-transmitting lens, and the second condenser lens, the first adjusting convex lens, the collimator lens and the light expansion lens are arranged in sequence.
6. The projection optical path of claim 5, wherein the light-exiting unit further comprises an aperture, and the second condenser lens, the aperture, the first adjusting convex lens, the collimator lens and the light-expanding lens are arranged in sequence, and the aperture is used for adjusting the intensity of the light rays exiting the light-exiting unit.
7. The projection optical path of claim 1, wherein the three-color lamp module comprises a first lamp group unit, a second lamp group unit, a third lamp group unit, a second one-way light-transmitting mirror and a third one-way light-transmitting mirror;
the second one-way light-transmitting mirror and the third one-way light-transmitting mirror are arranged in parallel, the reflecting surface of the second one-way light-transmitting mirror is arranged corresponding to the reflecting surface of the third one-way light-transmitting mirror, and the reflecting surface of the third one-way light-transmitting mirror is also arranged corresponding to the output end of the light source;
the first lamp group unit corresponds the income plain noodles setting of the one-way printing opacity mirror of second, the second lamp group unit corresponds the plane of reflection setting of the one-way printing opacity mirror of second, the third lamp group unit corresponds the income plain noodles setting of the one-way printing opacity mirror of third.
8. The projection light path of claim 7, wherein the three color lamp module further comprises a third condenser lens disposed between the second one-way light transmissive mirror and the third one-way light transmissive mirror.
9. A projector comprising a control unit and a projection optical path according to any one of claims 1 to 8, the control unit being electrically connected to the tri-color lamp module and the optical path directing module;
the control unit controls the tricolor lamp module to irradiate light to the silicon-based liquid crystal plate of the light path guiding module and controls the silicon-based liquid crystal plate to reflect the light so as to enable the light to be projected and imaged through the light path guiding module.
10. A projection system, comprising a control terminal, a light curtain and the projector according to claim 9, wherein the light curtain is disposed opposite to the projector, the control terminal is electrically connected to the control unit, the control terminal controls the control unit to make the projector irradiate light to the light curtain, and the light curtain is imaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020360416.5U CN211427018U (en) | 2020-03-19 | 2020-03-19 | Projection light path, projector and projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020360416.5U CN211427018U (en) | 2020-03-19 | 2020-03-19 | Projection light path, projector and projection system |
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| Publication Number | Publication Date |
|---|---|
| CN211427018U true CN211427018U (en) | 2020-09-04 |
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| CN202020360416.5U Active CN211427018U (en) | 2020-03-19 | 2020-03-19 | Projection light path, projector and projection system |
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| CN (1) | CN211427018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001673A (en) * | 2021-10-27 | 2022-02-01 | 深圳市安思疆科技有限公司 | Encoding pattern projector |
-
2020
- 2020-03-19 CN CN202020360416.5U patent/CN211427018U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001673A (en) * | 2021-10-27 | 2022-02-01 | 深圳市安思疆科技有限公司 | Encoding pattern projector |
| CN114001673B (en) * | 2021-10-27 | 2024-05-07 | 深圳市安思疆科技有限公司 | Coding pattern projector |
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