CN209248237U - A kind of LCD projection optical system and projector improving light source utilization rate - Google Patents
A kind of LCD projection optical system and projector improving light source utilization rate Download PDFInfo
- Publication number
- CN209248237U CN209248237U CN201821901500.2U CN201821901500U CN209248237U CN 209248237 U CN209248237 U CN 209248237U CN 201821901500 U CN201821901500 U CN 201821901500U CN 209248237 U CN209248237 U CN 209248237U
- Authority
- CN
- China
- Prior art keywords
- light
- lcd
- utilization rate
- guide plate
- optical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Liquid Crystal (AREA)
Abstract
The utility model discloses a kind of LCD projection optical system for improving light source utilization rate, including backlight, reflection mould group, the polarizer, LCD, lens and projection lens, mould group is reflected in the natural light incidence that backlight issues, natural light is resolved into the first P light and S light via reflection mould group, S light is converted into the 2nd P light again, the polarization state of first P light and the polarization state of the 2nd P light are identical, first P light and the 2nd P light reach projection lens via the polarizer, LCD, lens again, by projection lens projection imaging in specified region.A kind of LCD projector is also disclosed in the utility model.A kind of LCD projection optical system and projector improving light source utilization rate, reduce the overall volume of optical system, more convenient user uses, increase reflection mould group between backlight and the polarizer and natural light is resolved into the first P light and S light, S light is converted into the 2nd P light again, it is radiated at more light on LCD, improves light source utilization rate.
Description
Technical field
The utility model relates to projection display technique field more particularly to a kind of LCD projected lights for improving light source utilization rate
System and projector.
Background technique
Projector, also referred to as projector, be it is a kind of image or video are projected to the equipment that screen is shown, answer extensively
For family, office, school or cinema.In existing projection optical system, natural light is converted to by line by the polarizer
The light of polarised light, polarization direction only corresponding with liquid crystal display (LCD) can just be used to project, and the utilization rate of light source is low,
And it is existing mostly use reflector to gather the light that light source issues in liquid crystal display (LCD) greatly, then pass through liquid crystal display
(LCD), camera lens forms projected light beam, makes whole system size larger using reflector, and installation is inconvenient, and manufacturing cost is higher,
It is unfavorable for the Miniaturization Design, batch and large-scale production of projector.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is to provide a kind of LCD projection optical system and projector for improving light source utilization rate with a novel purpose, it is small in size, more square
Just it uses.
The technical scheme adopted by the utility model is a kind of LCD projection optical system for improving light source utilization rate, including
Backlight, reflection mould group, the polarizer, LCD, lens and projection lens, the incident reflection of the natural light that the backlight issues
Natural light is resolved into the first P light and S light via the reflection mould group, then the S light is converted into the 2nd P light, institute by mould group
The polarization state for stating the first P light is identical with the polarization state of the 2nd P light, and the first P light and the 2nd P light pass through again
The projection lens is reached by the polarizer, the LCD, the lens, by the projection lens projection imaging in specified area
Domain.
As a further improvement of the foregoing solution, the backlight includes reflectance coating, light guide plate and LED light, the leaded light
Plate is arranged between the reflectance coating and the reflection mould group, and the light guide plate exports the light that the LED light issues to institute
Reflection mould group is stated, light derived from the light guide plate is reflected back the light guide plate by the reflectance coating.
As a further improvement of the foregoing solution, the reflection mould group includes quarter-wave plate and reflecting type polarizing film,
The natural light that the backlight issues resolves into the first P light and S light by the quarter-wave plate, and the S light is via described
Reflecting type polarizing film is reflected back the quarter-wave plate, reaches via the quarter-wave plate, the light guide plate described anti-
Film is penetrated, then reflexes to the light guide plate again via the reflectance coating, then be converted into the 2nd P via the quarter-wave plate
Light, the first P light and the 2nd P light pass sequentially through the reflecting type polarizing film, the polarizer reaches the LCD.
As a further improvement of the foregoing solution, the side of the light guide plate, the LED light hair is arranged in the LED light
Light out is injected from the side of the light guide plate.
As a further improvement of the foregoing solution, the backlight further includes that diffusion barrier, the first bright enhancement film and second add lustre to
Film, light derived from the light guide plate pass sequentially through the diffusion barrier, first bright enhancement film, second bright enhancement film and reach institute
State reflection mould group.
As a further improvement of the foregoing solution, the backlight further includes lampshade, and the lampshade is arranged in the LED
Between lamp and the light guide plate, the lampshade is used to the convergence of rays that the LED light issues reflexing to the light guide plate.
As a further improvement of the foregoing solution, the system also includes reflecting mirror, the reflecting mirror is arranged described
Between mirror and the projection lens, the reflecting mirror is used to the light being emitted from the lens reflexing to the projection lens,
Again by the projection lens projection imaging in specified region.
As a further improvement of the foregoing solution, the lens are Fresnel Lenses.
A kind of LCD projector improving light source utilization rate, the projector includes such as above-mentioned raising light source utilization rate
LCD projection optical system.
The beneficial effects of the utility model are:
A kind of LCD projection optical system and projector improving light source utilization rate, using backlight, without light source with
Increase reflector between LCD, reduce the overall volume of optical system, is more convenient user and uses, between backlight and the polarizer
Increase reflection mould group and natural light is resolved into the first P light and S light, then S light is converted into the 2nd P light, the polarization state of the first P light
It is identical with the polarization state of the 2nd P light, it is radiated at more light on LCD, improves light source utilization rate, and then improve projection effect
Rate.
Detailed description of the invention
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
Fig. 1 is the LCD projection optical system example structure schematic diagram that the utility model improves light source utilization rate；
Fig. 2 be the utility model improve light source utilization rate LCD projection optical system in show from backlight to LCD optical path
It is intended to；
Fig. 3 is the utility model backlight specific embodiment main view；
Fig. 4 is the utility model light source specific embodiment structural schematic diagram；
Fig. 5 is another example structure schematic diagram of LCD projection optical system that the utility model improves light source utilization rate.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation
Clear, complete description, to be completely understood by the purpose of this utility model, scheme and effect.It should be noted that not conflicting
In the case where, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that unless otherwise specified, when a certain feature referred to as " fixation ", " connection " are in another feature,
It can directly fix, be connected to another feature, and can also fix, be connected to another feature indirectly.In addition, this
The descriptions such as up, down, left, right, before and after used in utility model are only relative to each composition portion of the utility model in attached drawing
For the mutual alignment relation divided.
In addition, unless otherwise defined, the technology of all technical and scientific terms used herein and the art
The normally understood meaning of personnel is identical.Term used in the description is intended merely to description specific embodiment herein, without
It is to limit the utility model.Term " and or " used herein includes appointing for one or more relevant listed items
The combination of meaning.
Embodiment one
Fig. 1 is the LCD projection optical system example structure schematic diagram that the utility model improves light source utilization rate, referring to figure
1, a kind of LCD projection optical system improving light source utilization rate, including backlight 1, reflection mould group, the polarizer 3, LCD4, lens 5
With projection lens 6, the natural light that backlight 1 issues is incident to reflection mould group 2, and natural light is resolved into the via reflection mould group 2
After one P light and S light, then S light being converted into the 2nd P light, the polarization state of the first P light and the polarization state of the 2nd P light are identical,
First P light and the 2nd P light reach projection lens 6 via the polarizer 3, LCD4, lens 5.In the present embodiment, the polarizer 3 is used for
The S light for being not converted into the 2nd P light is absorbed, after P light is modulated by LCD4, modulated light is assembled out by lens 5
It is incident upon projection lens 6, then by projection lens projection imaging in specified region.
Fig. 2 be the utility model improve light source utilization rate LCD projection optical system in show from backlight to LCD optical path
It is intended to, backlight 1 includes reflectance coating 100, light guide plate 101 and LED light 102 combined with Figure 1 and Figure 2, and light guide plate 101 is arranged anti-
It penetrates between mould 100 and reflection mould group 2, light guide plate 101 exports the light that LED light 102 issues to reflection mould group 2, reflectance coating
100, for light derived from light guide plate 100 to be reflected back light guide plate 101, improve the utilization rate of light.
In the present embodiment, reflection mould group 2 includes quarter-wave plate 201 and reflecting type polarizing film 202, and backlight 1 issues
Natural light resolve into the first P light and S light by quarter-wave plate 201, S light is reflected back four via reflecting type polarizing film 202
/ mono- wave plate 201 reaches reflectance coating 100 via quarter-wave plate 201, light guide plate 101, then again via reflectance coating 100
Light guide plate 101 is reflexed to, is exported by light guide plate 101 to quarter-wave plate 201 and is converted into the 2nd P light, the first P light and the 2nd P
Light successively reaches LCD4 by reflecting type polarizing film 202, the polarizer 3, and the present embodiment increases reflection mould group 2 and S light is converted into P
It is reentered after light and is incident upon LCD4, make more light incidence LCD4, improve light source utilization rate, and then improve projection efficiency.
Embodiment two
The purpose of the present embodiment is that illustrating a preferred embodiment of backlight in LCD projection optical system.
Fig. 3 is the utility model backlight specific embodiment main view, referring to Fig. 3, backlight include light guide plate 101,
LED light 102, light shield 103 and circuit board 104, wherein LED light 102 is mounted on circuit board 104, and multiple LED light 102 are arranged
In the side of light guide plate 101, the light that LED light 102 issues is injected from the side wall of light guide plate 101.
In the present embodiment, LED light 103 uses high-capacity LED, and circuit board 102 uses metal substrate, facilitates LED light 103
Heat dissipation.
In the present embodiment, it is additionally provided with lampshade 103 between light guide plate 101 and LED light 102, lampshade 103 is by LED light
102 convergences of rays issued reflex to light guide plate 101, increase lampshade 103 between light guide plate 101 and LED light 102, increase
The distance between LED light 102 and light guide plate 101 reduce influence of the heat of LED light 102 to light guide plate 101, can be according to reality
The thickness of demand adjustment light guide plate 101.
Embodiment three
The purpose of the present embodiment is that illustrating a preferred embodiment of backlight in LCD projection optical system.
Fig. 4 is the utility model light source specific embodiment structural schematic diagram, and in conjunction with Fig. 1 and Fig. 4, backlight includes reflectance coating
100, light guide plate 101, LED light 102, lampshade 103, wherein light guide plate 101 is arranged between reflectance coating 100 and reflectance coating group 2,
The light that LED light 102 issues is exported by 103 convergence reflex of lampshade to light guide plate 101, then by light guide plate 101 to reflectance coating group 2,
Improve the utilization rate of light.
In the present embodiment, backlight further includes diffusion barrier 105, the first bright enhancement film 106 and the second bright enhancement film 107, light guide plate
Light derived from 101 passes sequentially through diffusion barrier 105, the first bright enhancement film 106, the second bright enhancement film 107 and reaches reflection mould group 2.Diffusion
Film 105 is used to adjust beam angle, the first bright enhancement film 106 and the second bright enhancement film 107 for changing the direction of travel of light, so that
From the light-ray condensing that diffusion barrier 105 is emitted to the plane of incidence of reflection mould group 2, to achieve the effect that blast.
Example IV
Fig. 5 is another example structure schematic diagram of LCD projection optical system that the utility model improves light source utilization rate, ginseng
According to Fig. 5, the projection optical system of the present embodiment is the increase reflecting mirror 7 on the basis of the projection optical system of embodiment one, reflection
Mirror 7 is arranged between lens 5 and projection lens 6, the light launched from lens 5 is reflexed to projection lens 6, then by projection lens
First 6 projection imaging is on specified region.
Embodiment five
The utility model additionally provides a kind of LCD projector for improving light source utilization rate, which includes such as above-mentioned reality
Apply the LCD projection optical system of example.
A kind of LCD projection optical system and projector improving light source utilization rate, using backlight, without light source with
Increase reflector between LCD, reduce the overall volume of optical system, is more convenient user and uses, between backlight and the polarizer
Increase reflection mould group and natural light is resolved into the first P light and S light, then S light is converted into the 2nd P light, the polarization state of the first P light
It is identical with the polarization state of the 2nd P light, it is radiated at more light on LCD, improves light source utilization rate, and then improve projection effect
Rate.
It is to be illustrated to the preferable implementation of the utility model, but the utility model creation is not limited to institute above
Embodiment is stated, those skilled in the art can also make various be equal without departing from the spirit of the present invention
Deformation or replacement, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (9)
1. a kind of LCD projection optical system for improving light source utilization rate, which is characterized in that it includes backlight, reflection mould group, rises
Inclined device, LCD, lens and projection lens, the incident reflection mould group of the natural light that the backlight issues, via the reflection mould
Natural light is resolved into the first P light and S light by group, then the S light is converted into the 2nd P light, the polarization state of the first P light and
The polarization state of the 2nd P light is identical, the first P light and the 2nd P light again via the polarizer, the LCD,
The lens reach the projection lens, by the projection lens projection imaging in specified region.
2. a kind of LCD projection optical system for improving light source utilization rate according to claim 1, which is characterized in that described
Backlight includes reflectance coating, light guide plate and LED light, and the light guide plate is arranged between the reflectance coating and the reflection mould group,
The light guide plate exports the light that the LED light issues to the reflection mould group, and the reflectance coating exports the light guide plate
Light be reflected back the light guide plate.
3. a kind of LCD projection optical system for improving light source utilization rate according to claim 2, which is characterized in that described
Reflection mould group includes quarter-wave plate and reflecting type polarizing film, and the natural light that the backlight issues passes through a quarter
Wave plate resolves into the first P light and S light, and the S light is reflected back the quarter-wave plate via the reflecting type polarizing film, via
The quarter-wave plate, the light guide plate reach the reflectance coating, then reflex to the leaded light again via the reflectance coating
Plate, then it is converted into the 2nd P light via the quarter-wave plate, the first P light and the 2nd P light pass sequentially through described
Reflecting type polarizing film, the polarizer reach the LCD.
4. according to a kind of described in any item LCD projection optical systems for improving light source utilization rate of Claims 2 or 3, feature
It is, the side of the light guide plate is arranged in the LED light, and the light that the LED light issues is penetrated from the side of the light guide plate
Enter.
5. a kind of LCD projection optical system for improving light source utilization rate according to claim 4, which is characterized in that described
Backlight further includes diffusion barrier, the first bright enhancement film and the second bright enhancement film, and light derived from the light guide plate passes sequentially through the expansion
It dissipates film, first bright enhancement film, second bright enhancement film and reaches the reflection mould group.
6. a kind of LCD projection optical system for improving light source utilization rate according to claim 4, which is characterized in that described
Backlight further includes lampshade, and the lampshade is arranged between the LED light and the light guide plate, and the lampshade is used for will be described
The convergence of rays that LED light issues reflexes to the light guide plate.
7. a kind of LCD projection optical system for improving light source utilization rate according to claim 1, which is characterized in that described
System further includes reflecting mirror, and the reflecting mirror is arranged between the lens and the projection lens, and the reflecting mirror is used for will
The light being emitted from the lens reflexes to the projection lens, then by the projection lens projection imaging in specified region.
8. a kind of LCD projection optical system for improving light source utilization rate according to claim 1, which is characterized in that described
Lens are Fresnel Lenses.
9. a kind of LCD projector for improving light source utilization rate, which is characterized in that the projector includes such as claim 1 to 8 times
The LCD projection optical system of raising light source utilization rate described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821901500.2U CN209248237U (en) | 2018-11-16 | 2018-11-16 | A kind of LCD projection optical system and projector improving light source utilization rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821901500.2U CN209248237U (en) | 2018-11-16 | 2018-11-16 | A kind of LCD projection optical system and projector improving light source utilization rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209248237U true CN209248237U (en) | 2019-08-13 |
Family
ID=67529930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821901500.2U Active CN209248237U (en) | 2018-11-16 | 2018-11-16 | A kind of LCD projection optical system and projector improving light source utilization rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209248237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407452A (en) * | 2018-11-16 | 2019-03-01 | 深圳市高格投影科技有限公司 | A kind of LCD projection optical system and projector improving light source utilization rate |
-
2018
- 2018-11-16 CN CN201821901500.2U patent/CN209248237U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407452A (en) * | 2018-11-16 | 2019-03-01 | 深圳市高格投影科技有限公司 | A kind of LCD projection optical system and projector improving light source utilization rate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109407452A (en) | A kind of LCD projection optical system and projector improving light source utilization rate | |
| TW460710B (en) | Array lens, lighting optical system, optical unit and imaging apparatus | |
| CN109164667A (en) | A kind of projector | |
| CN110161687A (en) | AR display device and wearable AR equipment | |
| CN101725932A (en) | Light source module and projector using the same | |
| CN108803219A (en) | A kind of light fixture applied in laser projection device | |
| US20200209722A1 (en) | Novel lcd projector | |
| CN209055796U (en) | A kind of high colour gamut projection optical system and projector | |
| CN209248237U (en) | A kind of LCD projection optical system and projector improving light source utilization rate | |
| CN209055794U (en) | A kind of high colour gamut optical projection system and projector | |
| CN201796189U (en) | Optical projection system based on uniform illumination of total internal reflection lens | |
| CN211509206U (en) | Optical structure of novel LCD projector | |
| CN209055793U (en) | A kind of optical projection system and projector improving colour gamut | |
| CN109188840A (en) | The optical system and LCD projector of LCD projector | |
| CN209055792U (en) | A kind of LCD projection optical system and projector | |
| CN109388014A (en) | Projection screen and optical projection system | |
| CN209606761U (en) | A kind of light source direct imaging optical projection apparatus | |
| CN208999752U (en) | Optical system and LCD projector with reflex reflector | |
| CN209086652U (en) | The optical system and LCD projector of LCD projector | |
| US11366376B2 (en) | High-efficiency illumination system for LCD projector and projection method thereof | |
| US11711498B2 (en) | Efficient conjugate illumination system for LCD projector and projection method thereof | |
| CN101976011B (en) | MD short focus projection display device | |
| CN103672615A (en) | Backlight module for imaging projection system | |
| CN203930303U (en) | Photoimaging system and there is the projection imaging system of this photoimaging system | |
| CN209055795U (en) | A kind of projection optical system and projector improving colour gamut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200420 Address after: 518000 third floor, building 8, Hualun Science Park, Fenghuang first industrial zone, Fuyong Town, Fuyong street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN TOPFOISON ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: Room 107, Building A, Pioneer One, 43 Yanshan Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN GAOGE PROJECTION TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |