CN201583776U - Projector capable of remarkably increasing contrast - Google Patents
Projector capable of remarkably increasing contrast Download PDFInfo
- Publication number
- CN201583776U CN201583776U CN2009202523376U CN200920252337U CN201583776U CN 201583776 U CN201583776 U CN 201583776U CN 2009202523376 U CN2009202523376 U CN 2009202523376U CN 200920252337 U CN200920252337 U CN 200920252337U CN 201583776 U CN201583776 U CN 201583776U
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- projector
- optical switch
- light
- polarization optical
- contrast
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Abstract
The utility model discloses a projector capable of remarkably increasing the contrast, which comprises a blue light beam splitter (6), a collector lens (5), a polarization conversion system (4), a fly's-eye lens (3), a fly's-eye lens (2) and an ultraviolet filter plate (1) which are arranged sequentially from the left to the right, and a light source (40) is arranged just to the right of the ultraviolet filter plate (1). The projector is provided with a rotatable polarizing optical switch, which can control the brightness of the light source, the brightness difference between the white image and the black image is increased by reducing the brightness of the black image, consequently, the contrast of the projected image is increased, the projected image quality of the projector is improved, and moreover, the affection on the size of the projector is little; and compared with the prior ordinary projectors, the electricity consumption of the projector can be decreased, the daily use cost is reduced for users, the product-using experience of users is increased, and therefore the projector has a great significance in production practice.
Description
Technical field
The utility model relates to household electrical appliance technical field, particularly relates to a kind of projector that can significantly improve contrast.
Background technology
Along with the continuous development of China's science and technology, electric equipments such as video camera, camera, projector are more and more universal in people's work and daily life, and people often use projector to watch film and reading file.
In order to improve the image quality of projector, various new technology constantly occur.Wherein most technology are by to the adjustment of projection optical system, reach regulate brightness, improve contrast, the amount of saving energy is a purpose.Particularly, in order to improve image quality, particularly active to the research of light modulation Diming technology and fader control by improving contrast.
For example, have the method for utilizing mechanical switch to improve projector's contrast at present, this method reaches the purpose of control brightness by the machine derailing switch of Electric Machine Control.But, owing to utilize the method for mechanical switch control, need to use motor, feasible like this driving by motor is difficult to accurately measure, actuating speed is low, and the volume of projector is big, power consumption is high, makes troubles for user's daily use, and increased user's daily use cost, brought economic loss to the user.
The utility model content
In view of this, the purpose of this utility model provides a kind of projector that can significantly improve contrast, it is provided with the polarization optical switch, can improve the luminance difference between white picture and the black picture by the brightness that reduces a black picture, thereby improve the contrast of projected picture, improve the projection image quality of projector, and the volume influence to projector is little, compare with existing general projector, can reduce the power consumption of projector, reduce user's daily use cost, improve user's product use experience, promote projector's extensively popularizing in people's life, be of great practical significance.
For this reason, the utility model provides a kind of projector that can significantly improve contrast, comprise the blue light light splitting piece 6, collector lens 5, polarization conversion system 4, fly's-eye lens 3, fly's-eye lens 2 and the ultraviolet filtering plate 1 that from left to right set gradually, the front-right of described ultraviolet filtering plate 1 is provided with a light source 40;
Be provided with a polarization optical switch 30 between described blue light light splitting piece 6 and the collector lens 5.
Preferably, described polarization optical switch 30 includes bottom 100, and parallel interval is provided with the Polarizer 200 of a plurality of strips on the described bottom 100.
Preferably, described polarization optical switch 30 is a rotatable polarization optical switch, and the centre of described polarization optical switch 30 is provided with a polarizing axis, and the two ends of described polarizing axis are articulated on the projector shell.
Preferably, the plane bottom plate of described bottom 100 for adopting glass material to make.
The technical scheme that is provided by above the utility model as seen, compared with prior art, the utility model provides a kind of projector that can significantly improve contrast, it is provided with rotatable polarization optical switch, can control the brightness of light source, improve luminance difference between white picture and the black picture by the brightness that reduces black picture, thereby improve the contrast of projected picture, improve the projection image quality of projector, and the volume influence to projector is little, compare with existing general projector, can reduce the power consumption of projector, reduce user's daily use cost, improve user's product use experience, promote projector's extensively popularizing in people's life, be of great practical significance.
Description of drawings
A kind of plan structure synoptic diagram that can significantly improve the projector of contrast that Fig. 1 provides for the utility model;
The perspective view of polarization optical switch in a kind of projector that can significantly improve contrast that Fig. 2 provides for the utility model.
Embodiment
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.
The perspective view of polarization optical switch in a kind of projector that can significantly improve contrast that a kind of plan structure synoptic diagram that can significantly improve the projector of contrast that Fig. 1 provides for the utility model, Fig. 2 provide for the utility model.
Referring to Fig. 1, the utility model provides a kind of projector that can significantly improve contrast, comprise the blue light light splitting piece 6, collector lens 5, polarization conversion system 4, fly's-eye lens 3, fly's-eye lens 2 and the ultraviolet filtering plate 1 that from left to right set gradually, described blue light light splitting piece 6, collector lens 5, polarization conversion system 4, fly's-eye lens 3, fly's-eye lens 2 and ultraviolet filtering plate 1 vertically are placed on the same surface level, the front-right of described ultraviolet filtering plate 1 is provided with a light source 40, and described light source 40 is a bulb;
Referring to Fig. 1, the left side of described blue light light splitting piece 6 from left to right is vertically arranged with red mirror 20, relay lens 19, green glow light splitting piece 14 successively, and described blue light light splitting piece 6, red mirror 20, relay lens 19, green glow light splitting piece 14 vertically are placed on the same surface level;
The dead astern that is positioned at the described red mirror 20 on blue light light splitting piece 6 left sides draws near and is disposed with red mirror 20, ruddiness strengthens mirror RDF22, relay lens 21;
The dead astern of described blue light light splitting piece 6 draws near and is disposed with blu-ray reflection mirror 8, blue light strengthens mirror BDF 7;
From left to right be disposed with relay lens 19, incident polarization sheet 23, liquid crystal board 24, outgoing polaroid 25, outgoing polaroid 26, meter font prism 27, outgoing polaroid 13, outgoing polaroid 12, liquid crystal board 11, incident polarization sheet 10, object lens 9 between the described red mirror 20 that strengthens mirror 22 rears at ruddiness and the blu-ray reflection mirror 8;
The place ahead of described rice font prism 27 is provided with outgoing polaroid 18, outgoing polaroid 17, liquid crystal board 16, incident polarization sheet 15, object lens 9, and the described object lens 9 that are positioned at the place ahead rice font prism 27 are positioned at the dead astern of green glow light splitting piece 14;
For the utility model, described ultraviolet filtering plate 1 is used for leaching the ultraviolet ray that bulb sends light, described fly's-eye lens 2 and fly's-eye lens 3 are used to increase the homogeneity of light, the polarized light that described polarization conversion system 4 is used for ordinary light source is converted to the direction of vibration unanimity strengthens optical efficiency simultaneously, described collector lens 5 is used to strengthen light intensity, described blue light light splitting piece 6 is used for reflect blue, transmit red light, green glow;
Blue light strengthens the excitation that mirror BDF 7 is used to strengthen blue light, and blu-ray reflection mirror 8 is used for the direction of blu-ray reflection to liquid crystal board 11, and described incident polarization sheet 10,15,23 is used for converting incident light to polarized light; Described liquid crystal board 11,16,24 is used to carry out the display process of image, described outgoing polaroid 12,13,17,18,25,26 be used for by with the cooperating of incident light and liquid crystal board, realize the output of required image;
Described green glow light splitting piece is used for reflect green light, transmit red light; Described relay lens 19,21 is used to improve the light intensity of ruddiness; The red mirror 20 that is positioned at ruddiness enhancing mirror 22 rears is used for the direction of reflection to red light to liquid crystal board 24, and ruddiness strengthens the excitation that mirror RDF22 is used to strengthen ruddiness; Described rice font prism 27 is used for RGB three road light are converged to together and unification is projected to same direction.
For the utility model, in order to improve the contrast of projected picture, be provided with the rotatable polarization optical switch 30 (being the optical polarization switch) of a rectangle between described blue light light splitting piece 6 and the collector lens 5, this polarization optical switch 30 passes through passing through of Spin Control polarized light or reflects;
Above-mentioned polarization optical switch 30 utilizes the character of benchmark Polarizer to make referring to Fig. 2, described polarization optical switch includes bottom 100, parallel interval is provided with the Polarizer 200 of a plurality of strips on the described bottom 100, described Polarizer 200 plays the effect of the polarizer, constitutes polarizer together by bottom 100 and Polarizer 200; The plane bottom plate of described bottom 100 for adopting glass material to make.
In the utility model, the centre of described rectangle polarization optical switch has a polarizing axis, and this polarization optical switch is that the center is rotated with the polarizing axis, utilizes the character of polarization, carries out the blocking-up of light by utilizing polarization; On the specific implementation, the two ends of described polarizing axis are articulated on the projector shell.
Need to prove, the light that the bulb of the front-right setting of described ultraviolet filtering plate 1 sends is after passing through polarization conversion system 4, formed polarized light will all be shear wave (S ripple) or compressional wave (P ripple), pass through various optics effects then after, arrive each liquid crystal board at last;
The polarization optical switch that provides for the utility model, can by electronic signal control and surface level between carry out rotation between 0 ° and 90;
Under white field mode, the polarization optical switch level is placed, Polarizer 200 is 0 ° with the angle of surface level, if the direction of vibration of the polarized light that comes out from polarization conversion system 4 is identical with the direction of shaking thoroughly of Polarizer 200, so the polarized light that comes out from polarization conversion system 4 from Polarizer 200 by and be shown as white;
In black field mode following time, the polarization optical switch is vertically placed, Polarizer 200 is 90 ° with the angle of surface level, if the direction of vibration of the polarized light that comes out from polarization conversion system 4 is vertical with the direction of shaking thoroughly of Polarizer 200, so because the polarized light light-filtering characteristic of Polarizer 200, polarized light can't pass through Polarizer 200, not by the polarization optical switch, the light of polarisation is blocked, the polarized light of vertically injecting can be reflected, because this time can not see through the polarization optical switch, therefore helps the formation of black picture, make the further darkening of black picture, strengthen the black level of black picture.
Therefore, the utility model is adjusted the brightness of light by the polarization optical switch is installed, specifically under black field mode, can filter by the polarized light that the direction of shaking thoroughly of direction of vibration and Polarizer 200 is perpendicular (i.e. the polarized light that comes out from polarization conversion system 4), allow the light of polarisation be blocked, make polarized light can't see through Polarizer 200, thereby reduced the brightness of black picture, improve the luminance difference between white picture and the black picture, thereby improved the contrast of projected picture.
For the utility model, referring to Fig. 2, the volume of polarization optical switch is little, shared space is little, therefore the volume to projector can not form restriction, and assemble efficient and convenient, simultaneously owing to have structural rotatable characteristic, therefore when action, can easily realize the brightness of projector is controlled, thereby conveniently improve the projection image quality of projector.
In sum, compared with prior art, the utility model provides a kind of projector that can significantly improve contrast, it is provided with rotatable polarization optical switch, can control the brightness of light source, improve luminance difference between white picture and the black picture by the brightness that reduces black picture, thereby improve the contrast of projected picture, improve the projection image quality of projector, and the volume influence to projector is little, compare with existing general projector, can reduce the power consumption of projector, reduce user's daily use cost, improve user's product use experience, promote projector's extensively popularizing in people's life, be of great practical significance.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. projector that can significantly improve contrast, it is characterized in that, comprise the blue light light splitting piece (6), collector lens (5), polarization conversion system (4), fly's-eye lens (3), fly's-eye lens (2) and the ultraviolet filtering plate (1) that from left to right set gradually, the front-right of described ultraviolet filtering plate (1) is provided with a light source (40);
Be provided with a polarization optical switch (30) between described blue light light splitting piece (6) and the collector lens (5).
2. projector as claimed in claim 1 is characterized in that, described polarization optical switch (30) includes bottom (100), and described bottom (100) is gone up the Polarizer (200) that parallel interval is provided with a plurality of strips.
3. projector as claimed in claim 2, it is characterized in that, described polarization optical switch (30) is a rotatable polarization optical switch, and the centre of described polarization optical switch (30) is provided with a polarizing axis, and the two ends of described polarizing axis are articulated on the projector shell.
4. projector as claimed in claim 1 is characterized in that, the plane bottom plate of described bottom (100) for adopting glass material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202523376U CN201583776U (en) | 2009-12-30 | 2009-12-30 | Projector capable of remarkably increasing contrast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202523376U CN201583776U (en) | 2009-12-30 | 2009-12-30 | Projector capable of remarkably increasing contrast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201583776U true CN201583776U (en) | 2010-09-15 |
Family
ID=42725783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202523376U Expired - Fee Related CN201583776U (en) | 2009-12-30 | 2009-12-30 | Projector capable of remarkably increasing contrast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201583776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578162A (en) * | 2015-12-23 | 2016-05-11 | 深圳市帅映科技有限公司 | Laser projector for optimizing dynamic contrast of projection images |
| CN106681087A (en) * | 2017-02-06 | 2017-05-17 | 合肥京东方光电科技有限公司 | Projection device and driving method thereof |
| WO2017206259A1 (en) * | 2016-05-31 | 2017-12-07 | 深圳市华星光电技术有限公司 | Projection device and projection system |
-
2009
- 2009-12-30 CN CN2009202523376U patent/CN201583776U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578162A (en) * | 2015-12-23 | 2016-05-11 | 深圳市帅映科技有限公司 | Laser projector for optimizing dynamic contrast of projection images |
| CN105578162B (en) * | 2015-12-23 | 2018-04-03 | 深圳市帅映科技股份有限公司 | A kind of laser projection for optimizing projected picture dynamic contrast |
| WO2017206259A1 (en) * | 2016-05-31 | 2017-12-07 | 深圳市华星光电技术有限公司 | Projection device and projection system |
| CN106681087A (en) * | 2017-02-06 | 2017-05-17 | 合肥京东方光电科技有限公司 | Projection device and driving method thereof |
| CN106681087B (en) * | 2017-02-06 | 2018-09-07 | 合肥京东方光电科技有限公司 | Projection arrangement and its driving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN SANXING ELECTRONIC CO., LTD. Free format text: FORMER NAME: SANSUNG ELECTRONIC DISPLAY CO., LTD., TIANJIN |
|
| CP03 | Change of name, title or address |
Address after: 300385 Micro Electronics Development Zone, Tianjin economic and Technological Development Zone, four Patentee after: Tianjin Sanxing Electronic Co., Ltd. Address before: 300385 micro industry road, Microelectronics Industrial Zone, Tianjin economic and Technological Development Zone, four Patentee before: Sansung Electronic Display Co., Ltd., Tianjin |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20121230 |