CN115145096A - 2LCD projection method and projection device - Google Patents
2LCD projection method and projection device Download PDFInfo
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- CN115145096A CN115145096A CN202210733472.2A CN202210733472A CN115145096A CN 115145096 A CN115145096 A CN 115145096A CN 202210733472 A CN202210733472 A CN 202210733472A CN 115145096 A CN115145096 A CN 115145096A
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- 238000009434 installation Methods 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 230000001678 irradiating effect Effects 0.000 abstract 2
- 230000009471 action Effects 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G03B21/145—Housing details, e.g. position adjustments thereof
Abstract
The invention relates to the technical field of projection devices, in particular to a 2LCD (liquid crystal display) projection device, which comprises a projection device, wherein a lens is fixedly arranged at the front end of the projection device, a positioning groove is formed in the rear end of the inner bottom surface of the projection device, a mounting groove is formed in the front end of the inner bottom surface of the projection device, a supporting table is fixedly arranged in the mounting groove, a mounting hole is formed in the supporting table, oblique positioning blocks are symmetrically and fixedly arranged on two side walls in the projection device, the oblique positioning blocks are positioned on the upper side of the mounting groove, and two oblique positioning blocks are arranged on each side of the oblique positioning blocks, and the 2LCD projection method comprises the following steps: the method comprises the following steps: irradiating by a parallel light path; step two: irradiating by a vertical light path; step three: the light is combined.
Description
Technical Field
The invention relates to the technical field of projection devices, in particular to a 2LCD projection method and a projection device.
Background
LCD places the liquid crystal box in the middle of two parallel glass substrates, set up TFT (thin film transistor) on the infrabasal plate glass, set up color filter on the upper substrate glass, signal and voltage change through TFT come control liquid crystal molecule's rotation direction, thereby reach and control whether every pixel polarized light emergence reaches the device that shows the purpose, and present 2LCD projector luminance is not enough, the projection effect is relatively poor, influence user's use and experience, the inside subassembly of projection arrangement in addition, the inside certain subassembly of the complicated general projection arrangement of ann tears down or damage, just make to overhaul and maintain very trouble, seriously influence the work efficiency that projection arrangement overhauld, and then influence projection arrangement's use.
Disclosure of Invention
The present invention is directed to a 2LCD projection method and a projection apparatus, so as to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a2 LCD projection method and a projection device comprise the projection device, a lens is fixedly arranged at the front end of the projection device, positioning grooves are formed in the rear end of the inner bottom surface of the interior of the projection device, a mounting groove is formed in the front end of the inner bottom surface of the interior of the projection device, mounting holes are formed in the supporting table, oblique positioning blocks are symmetrically and fixedly arranged on two side walls of the interior of the projection device and are located at the upper side of the mounting groove, two oblique positioning blocks are arranged on each side, a long-wave optical filter is inserted into the oblique positioning blocks, first matching grooves are symmetrically formed in the positions, close to the front, of the outer ends of two sides of the projection device, inserting holes are formed in the inner ends of the first matching grooves, second matching grooves are symmetrically formed in the positions, close to the rear, lower bottom surfaces of the second matching grooves are provided with lower shrinkage holes, connecting holes are formed in the inner bottom surfaces of the second matching grooves, upper top surfaces of the projection device are provided with upper through holes, mounting holes are formed in the rear ends of the mounting holes, lower insertion holes are provided with rectangular insertion holes, a light source module and a second light source module and an LCD cover plate and a second matching mechanism are mounted on the upper end of the projection device.
Preferably, the fixed curved surface fore-set that is provided with of front end bilateral symmetry of upper cover plate, the curved surface fore-set is pegged graft under operating condition in first cooperation groove, and the fixed toper that is provided with of rear end bilateral symmetry of upper cover plate is inserted the post, the toper is inserted the post and is passed the through-hole under operating condition and peg graft in second cooperation groove, and has seted up the locating hole on the lateral surface of toper inserted the post, the fixed fore-set that is provided with down on the rear end intermediate position of upper cover plate, the rear side of fore-set is fixed to be provided with down the picture peg, and the fore-set pegs graft under operating condition under in the jack down, and the picture peg is pegged graft under operating condition in the rectangle jack down.
Preferably, apron and LCD module fixed establishment include baffle, first ball piece, second ball piece, go up roof and fixed cover down, the circular port has been seted up on the baffle, and baffle fixed mounting is in the notch department in second cooperation groove, first ball piece is pegged graft in the jack down, and the upper end welding of first ball piece has first spring, the upper end welding of first spring has the installation cover, the fixed inside upper end of pegging graft in the jack down of installation cover.
Preferably, a connecting column is fixedly arranged at the rear end of the second ball block, the connecting column penetrates through the circular hole to be inserted into the second matching groove, a threaded hole is formed in the connecting column, a pulling block is connected to the threaded hole in a threaded mode and is located on the outer side of the baffle, a second spring is sleeved on the connecting column, and the second spring is located inside the second matching groove.
Preferably, the lower end of the upper top plate is fixedly provided with a guide post, the guide post is inserted into the lower shrinkage cavity, the guide post is sleeved with a third spring, and the upper top plate is located on the lower side of the second ball block.
Preferably, the fixed cover is four, and two of them are installed in second cooperation groove, and other two are installed in first cooperation groove, the fixed grafting post that is provided with in rear end of fixed cover, the fourth spring that has cup jointed on the grafting post, and fixed cover is in projection arrangement's inside, the tip threaded connection of grafting post has the bulb screw, and the bulb screw that is in first cooperation groove, and the bulb screw that is in second cooperation groove is in the second cooperation groove in addition, and the central line of bulb screw aligns with the central line of second ball piece, and both tip contacts.
Preferably, first LCD module includes fluorophor, first aspheric surface lens, chenille lens, quartzy phase difference board, red green LCD and incident polaroid, the fluorophor is installed in the mounting hole of projection arrangement rear end, and is in the front end of light source, and its upper end has seted up fixed slot, the pegging graft has down the picture peg in the fixed slot, first aspheric surface lens is installed at the front end of fluorophor, and its upper end has seted up the locking hole, the pegging graft has first ball piece in the locking hole, the chenille lens in the first LCD module is two, and quartzy phase difference board, red green LCD and incident polaroid set gradually between two chenille lenses, and all peg graft in the constant head tank.
Preferably, the second LCD module includes a second aspheric lens, a fresnel lens, a black-and-white LCD and an incident polarizer, the second aspheric lens is installed in the installation hole on the bottom surface of the projection apparatus and located on the upper side of the light source, the fresnel lens in the second LCD module is two, and the black-and-white LCD and the incident polarizer are sequentially disposed between the two fresnel lenses.
The projection method of the projection device comprises the following steps:
the method comprises the following steps: parallel light path illumination: a blue light source with a parallel light path irradiates on the fluorescent body, the fluorescent body is excited to emit yellow light, and the yellow light irradiates on the first LCD module after passing through the first aspheric lens;
step two: vertical light path irradiation: the blue light source of the vertical light path irradiates the second LCD module after passing through the second aspheric lens;
step three: light ray combination: the light of the second module is reflected by the long-wave filter, the light of the first module penetrates through the long-wave filter, the long-wave filter combines the transmitted light and the reflected light, and the combined light is imaged on a screen through the projection lens.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality, and has the following advantages:
1. through being provided with two sets of LCD modules, the light of first module is reflected by the long wave filter, and the light of second module is seen through the long wave filter, and the long wave filter is with transmission light and reflection light combination light, and light is formed images on the screen through projecting lens after combining the light. Therefore, the projection brightness is increased, the projection effect is better, and the use experience of a user is improved to the great extent;
2. the traditional screw fixing mode is changed, the upper cover plate is firmly installed at the upper end of the projection device through the matching of the second ball block and the positioning hole, the upper cover plate is convenient and quick to disassemble, and meanwhile, the curved surface top column, the conical insertion column, the lower top column, the lower insertion plate and the fixing sleeve are used for fixing the upper cover plate, so that the first LCD module and the second LCD module are fixedly installed without screws, the projection device is convenient and quick to disassemble when an internal component of the projection device breaks down and needs to be taken out for maintenance or replacement, the first LCD module and the second LCD module are unlocked only by disassembling the upper cover plate, the internal component of the projection device is taken out quickly, and the maintenance efficiency of the internal component of the projection device is greatly improved;
3. the projection device is low in manufacturing cost, convenient to use and excellent in viewing experience.
Drawings
FIG. 1 is an exploded view of an assembled projection device;
FIG. 2 is an assembly view of the projection apparatus;
FIG. 3 is an enlarged schematic view at A in FIG. 1;
FIG. 4 is an enlarged schematic view at B of FIG. 1;
FIG. 5 is a schematic diagram of a projection apparatus;
fig. 6 is a schematic structural view of the upper cover plate.
In the figure: 1. a projection device; 11. a lens; 12. positioning a groove; 13. mounting grooves; 131. an oblique positioning block; 14. a support table; 15. mounting holes; 16. a first mating groove; 17. a second mating groove; 171. reducing the hole; 172. an upper through hole; 18. a lower jack; 19. a rectangular jack; 2. an upper cover plate; 21. a curved surface top pillar; 22. a conical insert column; 23. positioning holes; 24. a lower top pillar; 25. a lower plug board; 3. a baffle plate; 4. a light source; 5. a phosphor; 51. fixing the slot; 511. a second phosphor; 6. a first aspherical lens; 61. a locking hole; 62. a first ball block; 63. installing a sleeve; 64. a first spring; 611. a second aspherical lens; 7. a second ball block; 71. connecting columns; 72. a second spring; 73. pulling the block; 74. an upper top plate; 75. a third spring; 8. fixing a sleeve; 81. inserting the column; 82. a ball screw; 83. a fourth spring; 9. a long-wave filter; 91. a Fresnel lens; 92. a crystal phase difference plate; 93. red and green LCD; 94. an incident polarizer; 96. black and white LCD.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution:
a2 LCD projection method and a projection device comprise a projection device 1, a lens 11 is fixedly arranged at the front end of the projection device 1, a positioning groove 12 is arranged at the rear end of the inner bottom surface of the interior of the projection device 1, a mounting groove 13 is arranged at the front end of the inner bottom surface of the interior of the projection device 1, a supporting table 14 is fixedly arranged inside the mounting groove 13, a mounting hole 15 is arranged on the supporting table 14, oblique positioning blocks 131 are symmetrically and fixedly arranged on the two side walls of the interior of the projection device 1, the oblique positioning blocks 131 are positioned on the upper side of the mounting groove 13, two oblique positioning blocks 131 are arranged on each side, a long wave optical filter 9 is inserted in the oblique positioning blocks 131, first matching grooves 16 are symmetrically arranged at the front positions of the outer ends of the two sides of the projection device 1, inserting holes are arranged in the first matching grooves 16, second matching grooves 17 are symmetrically arranged at the rear positions of the outer ends of the two sides of the projection device 1, and a shrinkage hole 171 is arranged on the lower bottom surface of the second matching grooves 17, and the inner bottom surface of the second matching groove 17 is provided with a connecting hole, the upper top surface is provided with an upper through hole 172, the rear end of the projection device 1 is also provided with a mounting hole 15, the upper end of the mounting hole 15 is provided with a lower jack 18, the rear side of the lower jack 18 is provided with a rectangular jack 19, and the two mounting holes 15 are both provided with a light source 4, the upper end of the projection device 1 is covered with an upper cover plate 2, the two sides of the front end of the upper cover plate 2 are symmetrically and fixedly provided with curved surface top posts 21, the curved surface top posts 21 are inserted in the first matching groove 16 in a working state, the two sides of the rear end of the upper cover plate 2 are symmetrically and fixedly provided with conical inserting posts 22, the conical inserting posts 22 penetrate through the upper through hole 172 and are inserted in the second matching groove 17 in the working state, the outer side surface of the conical inserting posts 22 is provided with a positioning hole 23, the middle position of the rear end of the upper cover plate 2 is fixedly provided with a lower top post 24, the rear side of the lower top column 24 is fixedly provided with a lower inserting plate 25, the lower top column 24 is inserted in the lower inserting hole 18 in a working state, and the lower inserting plate 25 is inserted in the rectangular inserting hole 19 in a working state.
The fixed spliced pole 71 that is provided with in rear end of second ball 7, spliced pole 71 passes the circular port and pegs graft in second cooperation groove 17, and set up threaded hole on the spliced pole 71, threaded connection has in the screw hole draws piece 73, draw the outside that piece 73 is in baffle 3, second spring 72 has been cup jointed on the spliced pole 71, second spring 72 is located the inside of second cooperation groove 17, the fixed guide post that is provided with of lower extreme of going up roof 74 in addition, the guide post is pegged graft in shrinkage cavity 171 down, and cup jointed third spring 75 on the guide post, it is in the downside of second ball 7 to go up roof 74.
The fixed cover 8 is four, and two of them are installed in the second matching groove 17, the other two are installed in the first matching groove 16, the inserting column 81 is fixedly arranged at the rear end of the fixed cover 8, the fourth spring 83 is sleeved on the inserting column 81, the fixed cover 8 is located inside the projection device 1, the end part of the inserting column 81 is in threaded connection with the ball head screw 82, the ball head screw 82 located in the first matching groove 16 is located in the first matching groove 16, the ball head screw 82 located in the second matching groove 17 is located in the second matching groove 17, the center line of the ball head screw 82 is aligned with the center line of the second ball block 7, the end parts of the two ball head screws are in contact, and the Neille lens 91 is inserted into the fixed cover 8 in a working state.
The projector device 1 is internally provided with a first LCD module and a second LCD module, the first LCD module comprises a fluorescent body 5, a first aspheric lens 6, a Fresnel lens 91, a crystal phase difference plate 92, a red-green LCD93 and an incident polaroid 94, the fluorescent body 5 is arranged in an installation hole 15 at the rear end of the projector device 1 and is positioned at the front end of a light source 4, a fixing slot 51 is formed in the upper end of the fluorescent body, a lower inserting plate 25 is inserted into the fixing slot 51, the first aspheric lens 6 is arranged at the front end of the fluorescent body 5, a locking hole 61 is formed in the upper end of the fluorescent body, a first ball block 62 is inserted into the locking hole 61, the Fresnel lenses 91 in the first LCD module are two, and the crystal phase difference plate 92, the red-green LCD93 and the incident polaroid 94 are sequentially arranged between the two Fresnel lenses 91 and are all inserted into the positioning slot 12.
The second LCD module includes a second aspheric lens 611, two fresnel lenses 91, a black-and-white LCD96 and an incident polarizer 94, the second aspheric lens 611 is installed in the installation hole 15 on the bottom surface of the projection apparatus 1 and is located on the upper side of the light source 4, and the two fresnel lenses 91 in the second LCD module are sequentially disposed between the two fresnel lenses 91, and the black-and-white LCD96 and the incident polarizer 94 are disposed in sequence.
The light P + S emitted from the light source is incident on the polarizing plate, the light P passes through the light S barrier, the light P is converted into the light S after passing through the LCD, and the light S is converted into the light P after passing through the crystal phase difference plate 92.
The projection method of the projection device comprises the following steps:
the method comprises the following steps: parallel light path illumination: a blue light source with a parallel light path irradiates on the fluorescent body 5, the fluorescent body 5 is excited to emit yellow light, and the yellow light irradiates on the first LCD module after passing through the first aspheric lens 6;
step two: vertical light path irradiation: the blue light source of the vertical light path passes through the second aspheric lens 611 and then irradiates the second LCD module;
step three: light combination: the light of the second module is reflected by the long-wave filter 9, the light of the first module penetrates through the long-wave filter 9, the long-wave filter 9 combines the transmitted light and the reflected light, and the combined light is imaged on a screen through the projection lens.
After the first LCD module and the second LCD module are installed inside the projection device 1, the upper cover plate 2 is covered on the projection device 1, at this time, under the action of the curved surface top pillar 21 and the conical insertion pillar 22, the fixing sleeve 8 moves oppositely and is sleeved on two sides of the fresnel lens 91 to fix the first LCD module and the second LCD module, meanwhile, under the action of the conical insertion pillar 22, the second ball block 7 moves towards the direction close to the baffle plate 3 until the positioning hole 23 reaches the position of the second ball block 7, then under the action of the second spring 72, the second ball block 7 is inserted into the positioning hole 23, so that the fixed installation of the upper cover plate 2 is realized, and meanwhile, under the action of the lower top pillar 24, the upper end of the first ball block 62 is abutted against the lower end of the aspheric surface, so that the aspheric surface cannot move upwards, so that the fixed installation of the first ball block 6 can be realized, the lower insertion plate 25 is inserted into the fixing slot 51, so that the phosphor 5 is fixed, and the fixed installation of the upper cover plate 2, the first LCD module and the second LCD module is very convenient and fast.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A 2LCD projection device, characterized by: the projection device comprises a projection device and is characterized in that a lens is fixedly arranged at the front end of the projection device, a positioning groove is formed in the rear end of the inner bottom surface of the projection device, a mounting groove is formed in the front end of the inner bottom surface of the projection device, a supporting table is fixedly arranged in the mounting groove, two oblique positioning blocks are symmetrically and fixedly arranged on two side walls of the inner portion of the projection device and located on the upper side of the mounting groove, a long-wave optical filter is inserted into each oblique positioning block, first matching grooves are symmetrically formed in the outer ends of two sides of the projection device close to the front position, inserting holes are formed in the inner portions of the first matching grooves, second matching grooves are symmetrically formed in the outer ends of two sides of the projection device close to the rear position, a retraction hole is formed in the lower bottom surface of each second matching groove, a connecting hole is formed in the inner bottom surface of each second matching groove, an upper through hole is formed in the upper top surface of the projection device, a mounting hole is also formed in the rear end of the projection device, a lower insertion hole is formed in the upper end of the projection device, a rectangular insertion hole is formed in the rear side of the rectangular insertion hole, a light source is installed in the LCD module, and an upper cover plate is covered on the upper cover plate of the upper end of the projection device, and an LCD module is installed on the LCD module.
2. A 2LCD projection device as claimed in claim 1, wherein: the fixed curved surface fore-end bilateral symmetry that is provided with of upper cover plate is followed the symmetry, the curved surface fore-stock is pegged graft under operating condition in first cooperation groove, and the rear end bilateral symmetry of upper cover plate is fixed to be provided with the toper and is inserted the post, the toper is inserted the post and is passed the through-hole under operating condition and peg graft in second cooperation groove, and has seted up the locating hole on the lateral surface of toper inserted the post, the fixed fore-stock that is provided with down on the rear end intermediate position of upper cover plate, the rear side of fore-stock is fixed to be provided with down the picture peg down, and the fore-stock pegs graft under operating condition under the jack under in, the picture peg is pegged graft under operating condition in the rectangle jack down.
3. A 2LCD projection device as claimed in claim 1, wherein: lower apron and LCD module fixed establishment include baffle, first ball piece, second ball piece, go up roof and fixed cover, the circular port has been seted up on the baffle, and baffle fixed mounting is in the notch department in second cooperation groove, first ball piece pegs graft in the lower jack, and the upper end welding of first ball piece has first spring, the upper end welding of first spring has the installation cover, the fixed inside upper end of pegging graft in the lower jack of installation cover.
4. A 2LCD projection device as claimed in claim 3, wherein: the rear end of the second ball block is fixedly provided with a connecting column, the connecting column penetrates through a circular hole to be inserted into the second matching groove, a threaded hole is formed in the connecting column, a pulling block is connected with the threaded hole in a threaded mode and is located on the outer side of the baffle, a second spring is sleeved on the connecting column, and the second spring is located inside the second matching groove.
5. A 2LCD projection device as claimed in claim 3, wherein: the lower end of the upper top plate is fixedly provided with a guide post, the guide post is inserted in the lower shrinkage cavity, a third spring is sleeved on the guide post, and the upper top plate is located on the lower side of the second ball block.
6. A 2LCD projection device as claimed in claim 3, wherein: the fixing sleeves are four, two of the fixing sleeves are installed at the second matching groove, the other two fixing sleeves are installed at the first matching groove, the inserting column is fixedly arranged at the rear end of each fixing sleeve, the fourth spring is sleeved on the inserting column, the fixing sleeves are located inside the projection device, the end portions of the inserting columns are in threaded connection with the ball screws, the ball screws located at the first matching grooves are located in the first matching grooves, the ball screws located at the second matching grooves are located in the second matching grooves, the center lines of the ball screws are aligned with the center line of the second ball block, and the end portions of the ball screws are in contact with the end portions of the second ball block.
7. A 2LCD projection device as claimed in claim 1, wherein: first LCD module includes fluorophor, first aspheric lens, fei nieer lens, crystal position looks difference board, red green LCD and incident polaroid, the fluorophor is installed in the mounting hole of projection arrangement rear end, and is in the front end of light source, and its upper end has seted up fixed slot, the lower picture peg has been pegged graft in the fixed slot, first aspheric lens installs the front end at the fluorophor, and its upper end has seted up the locking hole, it has first ball piece to peg graft in the locking hole, fei nier lens in the first LCD module is two, and crystal position looks difference board, red green LCD and incident polaroid set gradually between two fei nieer lens, and all peg graft in the constant head tank.
8. A 2LCD projection device as claimed in claim 1, wherein: the second LCD module comprises a second aspheric lens, a Fresnel lens, a black-and-white LCD and an incident polaroid, the second aspheric lens is installed in an installation hole in the bottom surface of the projection device and is positioned on the upper side of the light source, and the Fresnel lenses in the second LCD module are two and the black-and-white LCD and the incident polaroid are sequentially arranged between the two Fresnel lenses.
9. A 2LCD projection device according to any of claims 1-8, wherein: the projection method of the projection device comprises the following steps:
the method comprises the following steps: parallel light path illumination: a blue light source in a parallel light path irradiates on the fluorescent body, the fluorescent body is excited to emit yellow light, and the yellow light irradiates on the first LCD module after passing through the first aspheric lens;
step two: vertical light path illumination: the blue light source of the vertical light path irradiates the second LCD module after passing through the second aspheric lens;
step three: light combination: the light of the second module is reflected by the long-wave filter, the light of the first module penetrates through the long-wave filter, the long-wave filter combines the transmitted light and the reflected light, and the combined light is imaged on a screen through the projection lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733472.2A CN115145096B (en) | 2022-06-27 | 2022-06-27 | 2LCD projection method and projection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733472.2A CN115145096B (en) | 2022-06-27 | 2022-06-27 | 2LCD projection method and projection device |
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| CN115145096A true CN115145096A (en) | 2022-10-04 |
| CN115145096B CN115145096B (en) | 2023-09-12 |
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| CN211348965U (en) * | 2020-01-22 | 2020-08-25 | 深圳市九十九度光电技术有限公司 | LCD projection device |
| CN213482630U (en) * | 2020-10-12 | 2021-06-18 | 五洲融媒体科技股份有限公司 | 3LCD projection machine convenient to maintain |
| CN212846324U (en) * | 2020-10-26 | 2021-03-30 | 深圳市晟峰光电科技有限公司 | Digital light source processing projector |
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| CN115145096B (en) | 2023-09-12 |
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