CN115145096B - 2LCD projection method and projection device - Google Patents
2LCD projection method and projection device Download PDFInfo
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- CN115145096B CN115145096B CN202210733472.2A CN202210733472A CN115145096B CN 115145096 B CN115145096 B CN 115145096B CN 202210733472 A CN202210733472 A CN 202210733472A CN 115145096 B CN115145096 B CN 115145096B
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- 238000000034 method Methods 0.000 title claims description 9
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims description 8
- 238000005286 illumination Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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
- 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
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- General Physics & Mathematics (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to the technical field of projection devices, in particular to a 2LCD 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 at the rear end of the inner bottom surface of the projection device, an installation groove is formed at the front end of the inner bottom surface of the projection device, a supporting table is fixedly arranged in the installation groove, an installation hole is formed in the supporting table, oblique positioning blocks are symmetrically and fixedly arranged on two side walls of the interior of the projection device, the oblique positioning blocks are positioned at the upper side of the installation groove, and the number of the oblique positioning blocks at each side is two: step one: irradiating by a parallel light path; step two: irradiating with a vertical light path; step three: the light rays are 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
The LCD is a device that a liquid crystal box is placed in the middle of two parallel glass substrates, a TFT (thin film transistor) is arranged on the lower substrate glass, a color filter is arranged on the upper substrate glass, and the rotation direction of liquid crystal molecules is controlled by changing signals and voltages on the TFT, so that the aim of controlling whether polarized light of each pixel is emitted or not is achieved.
Disclosure of Invention
The present invention is directed to a 2LCD projection method and a projection apparatus, which solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a 2LCD projection method and projection arrangement, includes projection arrangement, projection arrangement's front end is fixed to be provided with the camera lens, and projection arrangement's inside inner bottom surface rear end has seted up the constant head tank, and its inner bottom surface front end has seted up the mounting groove, the inside fixed supporting bench that is provided with of mounting groove, the mounting hole has been seted up on the supporting bench, the symmetry is fixed on the inside both sides wall of projection arrangement to be provided with the slant locating piece, and the slant locating piece is in the upside of mounting groove, and the slant locating piece of every side is two, and the slant locating piece department peg graft has the long wave light filter, projection arrangement's both sides outer end is close to the front position on the symmetry and has been seted up first cooperation groove, the inside of first cooperation groove has been seted up the spliced eye, and projection arrangement's both sides outer end is close to the rear position on the second cooperation groove, the shrinkage cavity has been seted up down on the lower bottom surface of second cooperation groove, and the inside of second cooperation groove has been seted up the connecting hole, and set up the upper through-hole on the upper top surface, projection arrangement's rear end has also been seted up the mounting hole, projection arrangement's rear end is in the rear end mounting hole, and two jack sets up the jack and LCD module have, the LCD cover plate in the projection arrangement has, the LCD module has been installed on the rear end.
Preferably, curved surface jack posts are fixedly arranged at two sides of the front end of the upper cover plate symmetrically, the curved surface jack posts are inserted into the first matching groove in a working state, tapered inserting posts are fixedly arranged at two sides of the rear end of the upper cover plate symmetrically, the tapered inserting posts penetrate through upper through holes in the second matching groove in a working state and are inserted into the second matching groove in a sleeved mode, positioning holes are formed in the outer side faces of the tapered inserting posts, lower jack posts are fixedly arranged at the middle positions of the rear end of the upper cover plate, lower inserting plates are fixedly arranged at the rear sides of the lower jack posts, the lower jack posts are inserted into lower inserting holes in a working state, and the lower inserting plates are inserted into rectangular inserting holes in a working state.
Preferably, the lower cover plate and the LCD module fixing mechanism comprise a baffle, a first ball block, a second ball block, an upper top plate and a fixing sleeve, wherein a circular hole is formed in the baffle, the baffle is fixedly arranged at the notch of the second matching groove, the first ball block is inserted into the lower insertion hole, the upper end of the first ball block is welded with a first spring, the upper end of the first spring is welded with a mounting sleeve, and the mounting sleeve is fixedly inserted into the upper end of the lower insertion hole.
Preferably, the second ball block is fixedly provided with a connecting column, 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 pull block is connected in 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 in 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, a third spring is sleeved on the guide post, and the upper top plate is positioned at the lower side of the second ball block.
Preferably, the fixing sleeve is four, two of the fixing sleeves are arranged at the second matching groove, the other two fixing sleeves are arranged at the first matching groove, the fixing sleeve is fixedly provided with a plug column, the plug column is sleeved with a fourth spring, the fixing sleeve is positioned inside the projection device, the end part of the plug column is in threaded connection with a ball screw, the ball screw positioned at the first matching groove is positioned in the first matching groove, the ball screw positioned at the second matching groove is positioned in the second matching groove, the center line of the ball screw positioned in the second matching groove is aligned with the center line of the second ball block, and the end parts of the ball screw and the second ball block are in contact.
Preferably, the first LCD module includes a phosphor, a first aspheric lens, a fresnel lens, a crystal phase difference plate, a red-green LCD and an incident polarizer, the phosphor is installed in an installation hole at the rear end of the projection device and is positioned at the front end of the light source, a fixing slot is formed at the upper end of the phosphor, a lower plugboard is inserted in the fixing slot, the first aspheric lens is installed at the front end of the phosphor, a locking hole is formed at the upper end of the first aspheric lens, a first ball is inserted in the locking hole, two fresnel lenses in the first LCD module are sequentially arranged between the two fresnel lenses, and the crystal phase difference plate, the red-green LCD and the incident polarizer are both inserted in the positioning slot.
Preferably, the second LCD module includes a second aspheric lens, a fresnel lens, a black-and-white LCD and an incident polarizer, where the second aspheric lens is installed in an installation hole on the bottom surface of the projection device and is located at the upper side of the light source, the number of the fresnel lenses 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.
A projection method of a projection apparatus, comprising the steps of:
step one: parallel light path irradiation: the light of the blue light source of the parallel light path irradiates on the fluorescent body of the first LCD module, the fluorescent body of the first LCD module is excited to emit yellow light, and the yellow light irradiates on the first aspheric lens;
step two: perpendicular light path illumination: the light of the blue light source perpendicular to the light path irradiates on the second LCD module;
step three: light ray combination: the light of the second LCD module is reflected by the long-wave filter, the light of the first LCD module penetrates through the long-wave filter, the long-wave filter combines the transmitted light and the reflected light, and the light is imaged on a screen through the projection lens after combining the light.
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 transmitted through the long wave filter, and the long wave filter combines transmission light and reflection light, and the light is formed an image on the screen through projection lens after combining. Therefore, the projection brightness is increased, the projection effect is better, and the use experience of a user is improved to a great extent;
2. the traditional screw fixing mode is changed, the upper cover plate is firmly arranged at the upper end of the projection device through the matching of the second ball block and the positioning hole, so that the upper cover plate is very convenient and quick to detach, and meanwhile, the fixed installation of the first LCD module and the second LCD module is realized under the functions of the curved surface jacking column, the conical inserting column, the lower jacking column, the lower inserting plate and the fixed sleeve when the upper cover plate is fixedly arranged, and the fixed installation of the first LCD module and the second LCD module is realized without using screws, so that when the internal components of the projection device are out of order, the overhaul or the replacement is required, the upper cover plate is very convenient and quick, and the first LCD module and the second LCD module are unlocked and are quickly taken out, so that the overhaul efficiency of the internal components 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 a projection device assembly;
FIG. 2 is an assembled schematic view of a projection device;
FIG. 3 is an enlarged schematic view of FIG. 1 at A;
FIG. 4 is an enlarged schematic view at B in 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. a positioning groove; 13. a mounting groove; 131. a diagonal positioning block; 14. a support table; 15. a mounting hole; 16. a first mating groove; 17. a second mating groove; 171. a lower shrinkage cavity; 172. an upper through hole; 18. a lower jack; 19. rectangular jacks; 2. an upper cover plate; 21. a curved surface jack post; 22. conical inserted column; 23. positioning holes; 24. a lower jack-prop; 25. a lower plugboard; 3. a baffle; 4. a light source; 5. a fluorescent body; 51. a fixed slot; 511. a second phosphor; 6. a first aspherical lens; 61. a locking hole; 62. a first ball block; 63. a mounting sleeve; 64. a first spring; 611. a second aspherical lens; 7. a second ball block; 71. a connecting column; 72. a second spring; 73. pulling blocks; 74. an upper top plate; 75. a third spring; 8. a fixed sleeve; 81. a plug-in column; 82. ball screw; 83. a fourth spring; 9. a long wave filter; 91. a fresnel lens; 92. a crystal phase difference plate; 93. a red-green LCD; 94. an incident polarizer; 96. black and white LCD.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, the present invention provides a technical solution: a2 LCD projection method and projection device comprises a projection device 1, wherein the front end of the projection device 1 is fixedly provided with a lens 11, the rear end of the inner bottom surface of the interior of the projection device 1 is provided with a positioning groove 12, the front end of the inner bottom surface of the projection device is provided with a mounting groove 13, the interior of the mounting groove 13 is fixedly provided with a supporting table 14, the supporting table 14 is provided with a mounting hole 15, the two inner side walls of the projection device 1 are symmetrically and fixedly provided with oblique positioning blocks 131, the oblique positioning blocks 131 are positioned on the upper side of the mounting groove 13, the number of the oblique positioning blocks 131 on each side is two, the oblique positioning blocks 131 are respectively inserted with a long-wave optical filter 9, the outer ends of the two sides of the projection device 1 are symmetrically provided with a first matching groove 16, the interior of the first matching groove 16 is provided with an inserting hole, the outer ends of the two sides of the projection device 1 are symmetrically provided with a second matching groove 17, the lower shrinkage hole 171 is provided on the lower bottom surface of the second matching groove 17, and the inside 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 of the rear end of the projection device 1 is provided with a lower jack 18, the rear side of the lower jack 18 is provided with a rectangular jack 19, the two mounting holes 15 are provided with light sources 4, the upper end of the projection device 1 is covered with an upper cover plate 2, the front end of the upper cover plate 2 is symmetrically and fixedly provided with curved surface jacking columns 21, the curved surface jacking columns 21 are spliced in the first matching groove 16 in the working state, the rear end of the upper cover plate 2 is symmetrically and fixedly provided with conical inserting columns 22, the conical inserting columns 22 penetrate through the upper through hole 172 and are spliced in the second matching groove 17 in the working state, the outer side surface of the conical inserting columns 22 is provided with positioning holes 23, the middle position of the rear end of the upper cover plate 2 is fixedly provided with lower jacking columns 24, the rear side of the lower jack post 24 is fixedly provided with a lower plug board 25, and the lower jack post 24 is inserted into the lower plug hole 18 in an operating state, and the lower plug board 25 is inserted into the rectangular plug hole 19 in an operating state.
The projection device 1 is provided with an upper cover plate and LCD module fixing mechanism, the lower cover plate and LCD module fixing mechanism comprises a baffle 3, a first ball block 62, a second ball block 7, an upper top plate 74 and a fixing sleeve 8, a circular hole is formed in the baffle 3, the baffle 3 is fixedly arranged at the notch of the second matching groove 17, the first ball block 62 is inserted into the lower insertion hole 18, a first spring 64 is welded at the upper end of the first ball block 62, a mounting sleeve 63 is welded at the upper end of the first spring 64, and the mounting sleeve 63 is fixedly inserted into the upper end of the lower insertion hole 18.
The second ball block 7 is fixedly provided with a connecting column 71, the connecting column 71 penetrates through a circular hole to be inserted into the second matching groove 17, a threaded hole is formed in the connecting column 71, a pull block 73 is connected to the threaded hole in a threaded mode, the pull block 73 is located on the outer side of the baffle 3, the connecting column 71 is sleeved with a second spring 72, the second spring 72 is located in the second matching groove 17, in addition, the lower end of an upper top plate 74 is fixedly provided with a guide column, the guide column is inserted into a lower shrinkage cavity 171, a third spring 75 is sleeved on the guide column, and the upper top plate 74 is located on the lower side of the second ball block 7.
The fixing sleeves 8 are four, two of the fixing sleeves 8 are arranged at the second matching groove 17, the other two fixing sleeves are arranged at the first matching groove 16, the fixing sleeves 8 are fixedly provided with plug posts 81, the plug posts 81 are sleeved with fourth springs 83, the fixing sleeves 8 are positioned in the projection device 1, the end parts of the plug posts 81 are in threaded connection with ball screws 82, the plug posts 81 arranged on the fixing sleeves 8 at the second matching groove 17 are plugged in connecting holes, the ball screws 82 at the first matching groove 16 are positioned in the first matching groove 16, the ball screws 82 at the second matching groove 17 are positioned in the second matching groove 17, the center line of the ball screws 82 positioned in the second matching groove 17 is aligned with the center line of the second ball block 7, the end parts of the ball screws are in contact with the center line of the second ball block 7, and in addition, under the working state, the Fresnel lens 91 is plugged in the fixing sleeves 8.
The first LCD module and the second LCD module are installed in the projector 1, the first LCD module comprises a fluorescent body 5, a first aspheric lens 6, two Fresnel lenses 91, a crystal phase difference plate 92, a red-green LCD93 and an incident polaroid 94, the fluorescent body 5 is installed in an installation hole 15 at the rear end of the projector 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 in the fixing slot 51, the first aspheric lens 6 is installed 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 62 is inserted in the locking hole 61, the two Fresnel lenses 91 in the first LCD module are sequentially arranged between the two Fresnel lenses 91, and the crystal phase difference plate 92, the red-green LCD93 and the incident polaroid 94 are inserted in the positioning groove 12.
The second LCD module includes a second aspherical lens 611, a fresnel lens 91, a black-and-white LCD96, and an incident polarizer 94, the second aspherical lens 611 is mounted in a mounting hole 15 on the bottom surface of the projection apparatus 1 and is located at the upper side of the light source 4, the number of the fresnel lenses 91 in the second LCD module is two, and the black-and-white LCD96 and the incident polarizer 94 are sequentially disposed between the two fresnel lenses 91.
P+S light emitted by the light source is blocked by S light after passing through the incident polarizing plate, P light is converted into S light after passing through the LCD, S light is converted into P light after passing through the crystal phase difference plate 92, because the P light has good permeability and the S light has good reflectivity, light reaching the long-wave filter 9 from the vertical light path is S light, and light reaching the long-wave filter 9 from the parallel light path is P light.
A projection method of a projection apparatus, comprising the steps of:
step one: parallel light path irradiation: the light of the blue light source of the parallel light path irradiates on the fluorescent body 5 of the first LCD module, the fluorescent body 5 of the first LCD module is excited to emit yellow light, and the yellow light irradiates on the first aspheric lens 6;
step two: perpendicular light path illumination: the light of the blue light source perpendicular to the light path irradiates on the second LCD module;
step three: light ray combination: the light of the second LCD module is reflected by the long-wave filter 9, the light of the first LCD module passes through the long-wave filter 9, the long-wave filter 9 combines the transmitted light and the reflected light, and the light is imaged on a screen through a projection lens after combining the light.
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, the fixing sleeve 8 is sleeved on two sides of the chenille lens 91 in a opposite movement under the action of the curved top post 21 and the conical inserting post 22, so as to fix the first LCD module and the second LCD module, and meanwhile, the second ball 7 is moved in a direction close to the baffle plate 3 under the action of the conical inserting post 22 until the positioning hole 23 reaches the position of the second ball 7, and then the second ball 7 is inserted into the positioning hole 23 under the action of the second spring 72, so that the upper cover plate 2 is fixedly installed, and meanwhile, the upper end of the first ball 62 is propped up under the action of the lower top post 24, so that the first aspheric lens 6 is fixedly installed, and the lower inserting plate 25 is inserted into the fixing slot 51 to fix the fluorescent body 5, so that the upper cover plate 2, the first LCD module and the second LCD module are fixedly installed very conveniently.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A 2LCD projection device, characterized in that: the front end of the projection device is fixedly provided with a lens, the rear end of the inner bottom surface of the interior of the projection device is provided with a positioning groove, the front end of the inner bottom surface of the projection device is provided with a mounting groove, the interior of the mounting groove is fixedly provided with a supporting table, the supporting table is provided with a mounting hole, two side walls of the interior of the projection device are symmetrically and fixedly provided with oblique positioning blocks, the oblique positioning blocks are positioned on the upper side of the mounting groove, each side of the two oblique positioning blocks are inserted with a long-wave optical filter, the outer ends of the two sides of the projection device are symmetrically provided with a first matching groove at the front position, the interior of the first matching groove is provided with a plug hole, the outer ends of the two sides of the projection device are symmetrically provided with a second matching groove at the rear position, the lower bottom surface of the second matching groove is provided with a shrinkage cavity, the interior of the second matching groove is provided with a connecting hole, the upper top surface is provided with an upper through hole, the rear end of the projection device is also provided with a mounting hole, the upper end of the rear end of the projection device is provided with a lower jack, the rear end of the mounting hole is provided with a rectangular jack, the rear side is inserted with a plug hole, the two plug hole is provided with a round plug hole, the upper plug hole is provided with a round plug hole is fixedly arranged in the upper cover plate, the upper cover is provided with a round plug hole is fixedly arranged at the upper cover plate, the ball is fixedly arranged at the upper end of the plug hole, the plug hole is fixedly arranged at the ball cover, the ball cover is fixedly arranged at the upper end of the ball cover, the upper cover is fixed with the ball cover, the ball cover is fixed in the ball cover, the upper cover is fixed with the ball cover, and the upper cover is fixed at the upper end is fixed with the upper end and has a fixed. The connecting column penetrates through the round hole to be inserted into the second matching groove, the connecting column is provided with a threaded hole, the threaded hole is internally provided with a pull block in a threaded manner, the pull block is positioned at the outer side of the baffle, the connecting column is sleeved with a second spring, the second spring is positioned in the second matching groove, the lower end of the upper top plate is fixedly provided with a guide column, the guide column is inserted into the lower shrinkage hole, the guide column is sleeved with a third spring, the upper top plate is positioned at the lower side of the second ball block, four fixing sleeves are arranged, two of the fixing sleeves are arranged at the second matching groove, the other two fixing sleeves are arranged at the first matching groove, the fixing sleeve is fixedly provided with an inserting column, the inserting column is sleeved with a fourth spring, the fixing sleeve is positioned in the projection device, the end part of the inserting column is in a threaded manner, the ball screw positioned at the first matching groove is positioned in the first matching groove, in addition, the ball screw at the second matching groove is positioned in the second matching groove, the center line of the ball screw in the second matching groove is aligned with the center line of the second ball block, the two ends of the ball screw are contacted, a first LCD module and a second LCD module are arranged in the projection device, curved surface jacking columns are symmetrically and fixedly arranged at the two sides of the front end of the upper cover plate, the curved surface jacking columns are inserted in the first matching groove in the working state, tapered inserting columns are symmetrically and fixedly arranged at the two sides of the rear end of the upper cover plate, the tapered inserting columns penetrate through upper through holes in the second matching groove in the working state, positioning holes are formed in the outer side surfaces of the tapered inserting columns, a lower jacking column is fixedly arranged at the middle position of the rear end of the upper cover plate, a lower inserting plate is fixedly arranged at the rear side of the lower jacking column, the lower jacking column is inserted in the lower inserting hole in the working state, the lower plugboard is inserted into the rectangular jack under the working state, the first LCD module comprises a fluorescent body, a first aspheric lens, a Fresnel lens, a crystal phase difference plate, a red-green LCD and an incidence polaroid, the fluorescent body is installed in an installation hole at the rear end of the projection device and is positioned at the front end of a light source, a fixing slot is formed in the upper end of the fluorescent body, the lower plugboard is inserted into the fixing slot, the first aspheric lens is installed at the front end of the fluorescent body, a locking hole is formed in the upper end of the first aspheric lens, a first spherical block is inserted into the locking hole, the number of the Fresnel lenses in the first LCD module is two, the crystal phase difference plate, the red-green LCD and the incidence polaroid are sequentially arranged between the two Fresnel lenses and are inserted into the locating slot, the second LCD module comprises a second aspheric lens, the Fresnel lens, a black-white LCD and the incidence polaroid, the second aspheric lens is installed in the installation hole on the bottom surface of the projection device and is positioned at the upper side of the light source, and the two Fresnel lenses and the black-white LCD and the incidence polaroid in the second LCD module are sequentially arranged between the two Fresnel lenses.
2. A 2LCD projector as claimed in claim 1, wherein: the projection method of the projection device comprises the following steps:
step one: parallel light path irradiation: the light of the blue light source of the parallel light path irradiates on the fluorescent body of the first LCD module, the fluorescent body of the first LCD module is excited to emit yellow light, and the yellow light irradiates on the first aspheric lens;
step two: perpendicular light path illumination: the light of the blue light source perpendicular to the light path irradiates on the second LCD module;
step three: light ray combination: the light of the second LCD module is reflected by the long-wave filter, the light of the first LCD module penetrates through the long-wave filter, the long-wave filter combines the transmitted light and the reflected light, and the light is imaged on a screen through the projection lens after combining the light.
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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733472.2A CN115145096B (en) | 2022-06-27 | 2022-06-27 | 2LCD projection method and projection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115145096A CN115145096A (en) | 2022-10-04 |
| CN115145096B true CN115145096B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210733472.2A Active CN115145096B (en) | 2022-06-27 | 2022-06-27 | 2LCD projection method and projection device |
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| CN109426054A (en) * | 2017-08-31 | 2019-03-05 | 鸿富锦精密工业(武汉)有限公司 | Projector |
| CN209182640U (en) * | 2018-11-22 | 2019-07-30 | 吴鹏妹 | A kind of projector being convenient for changing eyeglass |
| 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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| CN115145096A (en) | 2022-10-04 |
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