CN114185242A - Polarized light 3D projection device - Google Patents
Polarized light 3D projection device Download PDFInfo
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- CN114185242A CN114185242A CN202111491651.1A CN202111491651A CN114185242A CN 114185242 A CN114185242 A CN 114185242A CN 202111491651 A CN202111491651 A CN 202111491651A CN 114185242 A CN114185242 A CN 114185242A
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- spectroscope
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- 238000009434 installation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
- G03B35/26—Stereoscopic photography by simultaneous viewing using polarised or coloured light separating different viewpoint images
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2073—Polarisers in the lamp house
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
- H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a polarized light 3D projection device which comprises a light source, a light equalizing lens, a condenser, an incident polarizing plate, a color LCD screen, an emergent polarizing plate, a P/S spectroscope, a field lens and a projection lens, wherein the incident polarizing plate comprises a P-direction incident polarizing plate and an S-direction incident polarizing plate, and the emergent polarizing plate comprises an S-direction emergent polarizing plate and a P-direction emergent polarizing plate. The polarized light 3D projection device adopts two groups of independent S light paths and independent P light paths. The color LCD screen on the S light path processes the image of the S polarized light, and the S light path is a reflection light path; the color LCD screen on the P light path processes the image of the P polarized light, and the P light path is a transmission light path; the P/S spectroscope used by the combination of the two groups of light rays reflects the S polarized light and transmits the P polarized light. The invention can realize the function of three-dimensional projection only by installing two projectors in the prior art by adopting one polarized light 3D projector, has simple structure and convenient installation, and is suitable for common families and consumers.
Description
Technical Field
The invention relates to the technical field of projectors, in particular to a polarized light 3D projection device.
Background
Three-dimensional (3D) projection is realized by the polarization principle of light, and two polarized lights with mutually perpendicular polarization directions are generated by a three-dimensional projection optical system and projected onto a screen.
At present, three-dimensional projection display is widely pursued by people because the three-dimensional projection display can generate an immersive visual experience, and various technologies and projectors for realizing the three-dimensional projection display are available. The first type is: the active three-dimensional projection technology using the liquid crystal shutter glasses is not suitable for ordinary households and consumers due to high manufacturing cost of the liquid crystal shutter glasses, and the frequent switching flicker of the liquid crystal shutter glasses causes discomfort to eyes. The second type is: by means of a double-light-machine three-dimensional projection technology of passive polarized glasses, two projectors are adopted to synchronously project images, the polarization directions of polaroids in front of the two projectors are mutually vertical, and the polarization directions of two beams of generated polarized light are mutually vertical; the second type of projection has a good stereoscopic effect, but needs two projectors during playing, and has the following defects: (1) when the projectors are installed, a series of strict measures are required to relatively fix the two projectors, the installation is complex, and the projector is only suitable for being fixedly installed and used in large occasions such as cinemas and commercial places; (2) the space occupied by the projector is large; (3) the production and operation and maintenance costs are high; (4) precise debugging of the two projectors is required. Therefore, it is very urgent to provide a polarized 3D projection device with a simple structure, which is suitable for use in ordinary households and consumers.
The present invention is directed to solving the above problems.
Disclosure of Invention
In order to solve the problems of complex structure and high installation requirement of the existing three-dimensional projector, the invention provides a polarized light 3D projection device which can simplify the structure of the projector and does not need high installation requirement.
In order to achieve the purpose, the invention adopts the technical scheme that:
polarized light 3D projection arrangement includes light source, light equalizing lens, condensing lens, incident polarizing plate, colored LCD screen, outgoing polarizing plate, P/S spectroscope, field lens, projection lens, wherein: the incident polarizing plate includes a P-direction incident polarizing plate and an S-direction incident polarizing plate, and the exit polarizing plate includes an S-direction exit polarizing plate and a P-direction exit polarizing plate. The polarized light 3D projection device adopts two groups of independent S light paths and independent P light paths.
The S light path comprises a light source, a light equalizing lens, a condenser, a P-direction incident polarizing plate, a color LCD screen, an S-direction emergent polarizing plate and a P/S spectroscope, and the light trend of the S light path is as follows: the light emitted by the light source is collimated by the light equalizing lens and the condenser lens and then irradiates the P-direction incident polarizing plate, the light is changed into P-direction polarized light, light beams passing through each point of the color LCD screen are deflected according to input signals and then reach the S-direction emergent polarizing plate, the S-direction emergent polarizing plate can block the P light of each point, only the S polarized light penetrates through the S-direction emergent polarizing plate, and the penetrated S polarized light is reflected by the P/S polarizing plate.
The P light path comprises a light source, a light equalizing lens, a condenser, an S-direction incident polarizing plate, a color LCD screen, a P-direction emergent polarizing plate and a P/S spectroscope, and the light trend of the P light path is as follows: the light emitted by the light source is collimated by the light equalizing lens and the condenser lens and then irradiates the S-direction incident polarizing plate, the light is changed into S-direction polarized light, light beams passing through each point of the color LCD screen are deflected according to input signals and then reach the P-direction emergent polarizing plate, the P-direction emergent polarizing plate can block the S light of each point, only the P-polarized light is transmitted, and the transmitted P-polarized light is transmitted by the P/S spectroscope.
The two light sources can be any one type of LED and LD laser light sources.
The field lens can be of a single-piece structure or a two-piece structure. When the field lens is of a single-chip structure, the field lens is arranged between the P/S spectroscope and the projection lens, light rays of the S light path after S polarized light is reflected by the P/S spectroscope and light rays of the P light path after P polarized light is transmitted by the P/S spectroscope are combined into a whole, and the light rays sequentially pass through the field lens and the projection lens and then reach the screen.
When the field lens is of a two-piece structure, the S light path comprises a light source, a light equalizing lens, a condenser, a P-direction incident polarizing plate, a color LCD screen, an S-direction emergent polarizing plate, a field lens and a P/S spectroscope, and compared with the field lens of a single-piece structure, the field lens is additionally arranged between the S-direction emergent polarizing plate and the P/S spectroscope; meanwhile, the P light path comprises a light source, a light equalizing lens, a condenser, an S-direction incident polarizing plate, a color LCD screen, a P-direction emergent polarizing plate, another field lens and a P/S spectroscope, and compared with the case of a single-chip structure field lens, the other field lens is added between the P-direction emergent polarizing plate and the P/S spectroscope. After the S polarized light is reflected by the P/S spectroscope, the light of the S light path and the light of the P light path after the P polarized light is transmitted by the P/S spectroscope are combined into a whole, and the light reaches a screen after passing through the projection lens.
The existing three-dimensional projector can carry out three-dimensional projection only by installing two projectors, and the polarized light 3D projection device disclosed by the invention is simple in structure, convenient to use and free from high installation requirements.
Drawings
FIG. 1 is a schematic diagram of a first structure of a polarized 3D projection apparatus according to the present invention
FIG. 2 is a schematic diagram of a second structure of a polarized 3D projection apparatus according to the present invention
Reference is made to the accompanying drawings in which:
1. the light source, 2, the light equalizing lens, 3, the condenser, 4, the P-direction incident polarizing plate, 5, the color LCD screen, 6, the S-direction emergent polarizing plate, 7, the S-direction incident polarizing plate, 8, the P-direction emergent polarizing plate, 9, the P/S spectroscope, 10, the field lens, 11, the projection lens, 12 and the field lens.
Detailed Description
For better understanding of the purpose and structure of the present invention, the polarized 3D projection apparatus of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
the polarized light 3D projection device of the embodiment comprises a light source (1), a light equalizing lens (2), a condenser (3), incident polarizing plates (4, 7), a color LCD screen (5), emergent polarizing plates (6, 8), a P/S spectroscope (9), a field lens (10) and a projection lens (11), wherein: the incident polarizing plate includes a P-direction incident polarizing plate (4) and an S-direction incident polarizing plate (7), and the exit polarizing plate includes an S-direction exit polarizing plate (6) and a P-direction exit polarizing plate (8). The polarized light 3D projection device adopts two groups of independent S light paths and independent P light paths.
The S light path comprises a light source (1), a light equalizing lens (2), a condenser (3), a P-direction incident polarizing plate (4), a color LCD screen (5), an S-direction emergent polarizing plate (6) and a P/S spectroscope (9), and the light trend of the S light path is as follows: light emitted by a light source (1) is collimated by a light equalizing lens (2) and a condenser lens (3) and then irradiates a P direction incident polarizing plate (4), light is changed into P direction polarized light, light beams passing through each point of a color LCD screen (5) are deflected according to input signals and then reach an S direction emergent polarizing plate (6), the S direction emergent polarizing plate (6) can block the P light of each point, only S polarized light is transmitted, and the transmitted S polarized light is reflected by a P/S spectroscope (9).
The P light path includes light source (1), lens (2) of homogenizing light, condensing lens (3), S to incidenting polarizing plate (7), colored LCD screen (5), P to emergent polarizing plate (8), P/S spectroscope (9), and the light trend of P light path is: light emitted by a light source (1) is collimated by a light equalizing lens (2) and a condenser lens (3) and then irradiates an S-direction incident polarizing plate (7), light is changed into S-direction polarized light, light beams passing through each point of a color LCD screen (5) are deflected according to input signals and then reach a P-direction emergent polarizing plate (8), the P-direction emergent polarizing plate (8) can block the S light of each point, only the P-polarized light is transmitted, and the transmitted P-polarized light is transmitted by a P/S spectroscope (9).
The two light sources (1) in the polarized 3D projection device of the embodiment both adopt LEDs.
The field lens (10) in the polarized light 3D projection device is of a single-chip structure, the field lens (10) is arranged between the P/S spectroscope (9) and the projection lens (11), light rays of an S light path after S polarized light is reflected by the P/S spectroscope (9) and light rays of a P light path after P polarized light is transmitted by the P/S spectroscope (9) are combined into a whole, and the light rays sequentially pass through the field lens (10) and the projection lens (11) and then reach a screen.
Example 2:
the polarized light 3D projection device of the embodiment comprises a light source (1), a light equalizing lens (2), a condenser (3), incident polarizing plates (4, 7), a color LCD screen (5), emergent polarizing plates (6, 8), a field lens (12), a P/S (P/S) spectroscope (9) and a projection lens (11), wherein: the incident polarizing plate includes a P-direction incident polarizing plate (4) and an S-direction incident polarizing plate (7), and the exit polarizing plate includes an S-direction exit polarizing plate (6) and a P-direction exit polarizing plate (8). The polarized light 3D projection device adopts two groups of independent S light paths and independent P light paths.
The S light path comprises a light source (1), a light equalizing lens (2), a condenser (3), a P-direction incident polarizing plate (4), a color LCD screen (5), an S-direction emergent polarizing plate (6), a field lens (12) and a P/S spectroscope (9), and the light trend of the S light path is as follows: light emitted by a light source (1) is collimated by a light equalizing lens (2) and a condenser lens (3) and then irradiates a P direction incident polarizing plate (4), light is changed into P direction polarized light, light beams passing through each point of a color LCD screen (5) are deflected according to input signals and then reach an S direction emergent polarizing plate (6), the S direction emergent polarizing plate (6) can block the P light of each point, only S polarized light passes through, and the S polarized light passing through is reflected by a P/S spectroscope (9) after passing through a field lens (12).
The P light path includes light source (1), lens (2) of homogenizing light, condensing lens (3), S to incidenting polarizing plate (7), colored LCD screen (5), P to emergent polarizing plate (8), field lens (12), P/S spectroscope (9), the light trend of P light path is: light emitted by a light source (1) is collimated by a light equalizing lens (2) and a condenser lens (3) and then irradiates an S-direction incident polarizing plate (7), light is changed into S-direction polarized light, light beams passing through each point of a color LCD screen (5) are deflected according to input signals and then reach a P-direction emergent polarizing plate (8), the P-direction emergent polarizing plate (8) can block the S light of each point, only the P-polarized light passes through, and the P-polarized light passing through is transmitted by a P/S spectroscope (9) after passing through a field lens (12).
The two light sources (1) in the polarized 3D projection device of the embodiment adopt LD laser light sources.
The field lens (12) in the polarized light 3D projection device of the embodiment is of a two-piece structure, the S light path comprises a light source (1), a light equalizing lens (2), a condenser (3), a P-direction incident polarizing plate (4), a color LCD screen (5), an S-direction emergent polarizing plate (6), a field lens (12) and a P/S spectroscope (9), and compared with the field lens (10) of a single-piece structure, the field lens (12) is additionally arranged between the S-direction emergent polarizing plate (6) and the P/S spectroscope (9); meanwhile, the light path P comprises a light source (1), a light equalizing lens (2), a condenser (3), an S-direction incident polarizing plate (7), a color LCD screen (5), a P-direction emergent polarizing plate (8), another field lens (12) and a P/S spectroscope (9), and compared with the case of a single-chip structure field lens (10), the other field lens (12) is additionally arranged between the P-direction emergent polarizing plate (8) and the P/S spectroscope (9). The light of the S light path after the S polarized light is reflected by the P/S spectroscope (9) and the light of the P light path after the P polarized light is transmitted by the P/S spectroscope (9) are combined into a whole, and the light reaches a screen after passing through a projection lens (11).
It is understood that the present invention has been described with reference to certain embodiments. Various changes or equivalent substitutions may be made on these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. A polarized light 3D projection device, characterized by: the polarized light 3D projection device comprises a light source (1), a light equalizing lens (2), a condenser (3), incident polarizing plates (4, 7), a color LCD screen (5), emergent polarizing plates (6, 8), a P/S spectroscope (9), field lenses (10, 12) and a projection lens (11), wherein the incident polarizing plates comprise a P-direction incident polarizing plate (4) and an S-direction incident polarizing plate (7), the emergent polarizing plates comprise an S-direction emergent polarizing plate (6) and a P-direction emergent polarizing plate (8), and the polarized light 3D projection device adopts two groups of independent S light paths and P light paths; the S light path comprises a light source (1), a light equalizing lens (2), a condenser (3), a P-direction incident polarizing plate (4), a color LCD screen (5), an S-direction emergent polarizing plate (6) and a P/S spectroscope (9), and the light trend of the S light path is as follows: the light emitted by the light source (1) is collimated by the light equalizing lens (2) and the condenser lens (3) and then irradiates onto the P-direction incident polarizing plate (4), the light is changed into P-direction polarized light, light beams passing through each point of the color LCD screen (5) are deflected according to input signals and then reach the S-direction emergent polarizing plate (6), the S-direction emergent polarizing plate (6) can block the P light of each point, only S polarized light is transmitted, and the transmitted S polarized light is reflected by the P/S spectroscope (9); the P light path includes light source (1), lens (2) of homogenizing light, condensing lens (3), S to incidenting polarizing plate (7), colored LCD screen (5), P to emergent polarizing plate (8), P/S spectroscope (9), and the light trend of P light path is: light emitted by a light source (1) is collimated by a light equalizing lens (2) and a condenser lens (3) and then irradiates an S-direction incident polarizing plate (7), light is changed into S-direction polarized light, light beams passing through each point of a color LCD screen (5) are deflected according to input signals and then reach a P-direction emergent polarizing plate (8), the P-direction emergent polarizing plate (8) can block the S light of each point, only the P-polarized light is transmitted, and the transmitted P-polarized light is transmitted by a P/S spectroscope (9).
2. A polarized 3D projection device according to claim 1, characterized in that: the field lens (10) is of a single-chip structure, the field lens (10) is arranged between the P/S spectroscope (9) and the projection lens (11), light rays of an S light path after S polarized light is reflected by the P/S spectroscope (9) and light rays of a P light path after P polarized light is transmitted by the P/S spectroscope (9) are combined into a whole, and the light rays sequentially pass through the field lens (10) and the projection lens (11) and then reach a screen.
3. A polarized 3D projection device according to claim 1, characterized in that: the field lens (12) is of a two-piece structure, and the S light path further comprises a field lens (12) arranged between the S-direction emergent polarizing plate (6) and the P/S spectroscope (9); meanwhile, the P light path also comprises another field lens (12), and the other field lens (12) is arranged between the P outgoing polarizing plate (8) and the P/S spectroscope (9); the light of the S light path after the S polarized light is reflected by the P/S spectroscope (9) and the light of the P light path after the P polarized light is transmitted by the P/S spectroscope (9) are combined into a whole, and the light reaches a screen after passing through a projection lens (11).
4. A projection device according to any one of claims 1 to 3, wherein: the light source (1) is any one type of LED and LD laser light sources.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111491651.1A CN114185242A (en) | 2021-12-08 | 2021-12-08 | Polarized light 3D projection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111491651.1A CN114185242A (en) | 2021-12-08 | 2021-12-08 | Polarized light 3D projection device |
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| CN114185242A true CN114185242A (en) | 2022-03-15 |
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| CN202111491651.1A Pending CN114185242A (en) | 2021-12-08 | 2021-12-08 | Polarized light 3D projection device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859052A (en) * | 2009-04-01 | 2010-10-13 | 精工爱普生株式会社 | Projector |
| CN102495521A (en) * | 2011-12-08 | 2012-06-13 | 四川省雷克赛恩电子科技有限公司 | Polarized-light 3D (three-dimension) projector with single lens and double LCDs (Liquid Crystal Display) |
| CN110262170A (en) * | 2019-06-06 | 2019-09-20 | 郭瀚文 | A kind of two-piece type LCD projector based on PBS division light |
| CN111399326A (en) * | 2020-04-27 | 2020-07-10 | 南华智能精密机器(深圳)有限公司 | L CD projector optical system and projection method |
-
2021
- 2021-12-08 CN CN202111491651.1A patent/CN114185242A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859052A (en) * | 2009-04-01 | 2010-10-13 | 精工爱普生株式会社 | Projector |
| CN102495521A (en) * | 2011-12-08 | 2012-06-13 | 四川省雷克赛恩电子科技有限公司 | Polarized-light 3D (three-dimension) projector with single lens and double LCDs (Liquid Crystal Display) |
| CN110262170A (en) * | 2019-06-06 | 2019-09-20 | 郭瀚文 | A kind of two-piece type LCD projector based on PBS division light |
| CN111399326A (en) * | 2020-04-27 | 2020-07-10 | 南华智能精密机器(深圳)有限公司 | L CD projector optical system and projection method |
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Application publication date: 20220315 |