CN201886267U - Optical engine of monolithic LCOS (liquid crystal on silicon) laser projection system - Google Patents
Optical engine of monolithic LCOS (liquid crystal on silicon) laser projection system Download PDFInfo
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- CN201886267U CN201886267U CN2010206796356U CN201020679635U CN201886267U CN 201886267 U CN201886267 U CN 201886267U CN 2010206796356 U CN2010206796356 U CN 2010206796356U CN 201020679635 U CN201020679635 U CN 201020679635U CN 201886267 U CN201886267 U CN 201886267U
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Abstract
The utility model discloses an optical engine of a monolithic LCOS (liquid crystal on silicon) laser projection system. Reflectors are respectively arranged on the optical axes of a red light emitter and a blue light emitter; an X-type cube is arranged at the crossed part of the emitted beams of the reflectors and the optical axis of a green light emitter; the beam emitting end of the X-type cube is provided with a polarizing beam splitter; two sides of the polarizing beam splitter are respectively provided with an LCOS and a projection objective; the red light emitter, the green light emitter and the blue light emitter are all lasers; the optical axes of the red light emitter, the green light emitter and the blue light emitter are respectively provided with a dodging and shaping system; the dodging and shaping system consists of a beam expanding and collimating system, a beam shaping and facula eliminating system, and a conjugate phase eliminating device; and the optical axes of the beam expanding and collimating system, the beam shaping and facula eliminating system and the conjugate phase eliminating device are overlapped. The color gamut scope, the color brightness and the color rendering index of the optical engine are all better than those of a traditional optical engine; therefore, as for the optical engine, the optical energy utilization rate is improved simultaneously when the cost is reduced.
Description
Technical field
The utility model relates to the laser display technology field, specifically a kind of light engine of one chip LCOS laser projection system.
Background technology
Projection display technique through decades development, progressively move to maturity, and be widely used.Projection display technique mainly is divided into CRT, LCD, DLP, LCOS four classes at present.CRT projection display technique development time is the longest, and technology is the most ripe, but because its brightness is low, display size is limited, volume is big, heavy, adjust complicated and show that for a long time still frame can make cathode-ray tube (CRT) generation shortcoming such as burn, seldom use at present; The LCD projection display technique develops very rapid over past ten years, it has, and volume is little, in light weight, simple to operate, low cost and other advantages, but it exists shortcomings such as light utilization efficiency is low, the pixel sense is strong; The DLP projection display technique is present unique digital shadow casting technique, and its image device is DMD, and it has the efficiency of light energy utilization than advantage such as higher, that response speed fast, brightness and look good uniformity, volume are little, in light weight; The LCOS projection display technique then combines the advantage of LCD and two kinds of projection display techniques of DLP, has following advantage: (1) resolution height, image exquisiteness; (2) aperture opening ratio height, efficiency of light energy utilization height, brightness height; (3) contrast can reach 2000:1 than LCD height; (4) the direct reflected light of the same energy with the DLP panel and make panel be difficult for being burnt; (5) no ghost phenomena.
Which kind of projection display technique no matter, light source all is to guarantee that its color is true to nature, the key that image color is abundant.On the chromatic diagram of International Commission on Illumination (CIE) issue in 1931, laser display colour triangle area is more than 2 times of traditional C RT colour triangle area, this gamut range that just means that laser projection shows is broader, and shown color of coming out is more true to nature.In addition, laser display and tradition show to be compared, and also has following advantage: 1. because the spectrum of laser is line spectrum, so the excitation of laser, saturation degree are all very high; 2. compare with common display, at same size, under the identical display effect condition, the luminous energy of laser display loss is lower; 3. laser display at room temperature the life-span can reach more than 100,000 hours, its life-span is long, the reliability height; 4. laser display is easy to realize the large scale screen.
In sum, based on the laser projection display technology of LCOS, be the developing direction and the inexorable trend of following projection display technique.In theory, in traditional Projection Display colour mixture mechanism, no matter be based on the spacing color mixed technology of three-sheet type LCOS, also being based on one chip LCOS utilizes the motor drive colour wheel of high speed rotating to realize time colour mixture technology, all there is 67% luminous energy to be wasted, so, seek a kind of new colour mixture mechanism based on the LCOS projection display technique, reducing the luminous energy waste as far as possible, is the current top priority in projection display technique field.
The utility model content
Technical problem to be solved in the utility model provide a kind of reasonable in design, gamut range is bigger, capacity usage ratio is higher based on one chip LCOS laser projection shows and use light engine.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be: the light engine of one chip LCOS laser projection system, comprise the red light-emitting device, green luminescence device and blue light emitting device, be respectively equipped with catoptron on the optical axis of red light-emitting device and blue light emitting device, the intersection of the optical axis of the emergent ray of catoptron and green luminescence device is provided with X type light-combining prism, the beam projecting end of X type light-combining prism is provided with polarizing beam splitter mirror, the both sides of polarizing beam splitter mirror are respectively equipped with LCOS and projection objective, described red light-emitting device, green luminescence device and blue light emitting device are laser instrument, at the red light-emitting device, also be respectively equipped with even polishing shape system on the optical axis of green luminescence device and blue light emitting device, even polishing shape system is by beam-expanding collimation system, beam shaping dissipation spot system and the conjugation phase place device that disappears is formed beam-expanding collimation system, the disappear optical axis of phase place device of beam shaping dissipation spot system and conjugation coincides.
Described beam-expanding collimation system is made up of a biconcave lens and a biconvex lens.
Described beam shaping dissipation spot system is made up of a fourier transform lens, a phase place diffraction type optical device, a miniature rotary electric machine and the circular diffusion sheet of low-angle.
Described catoptron is single wavelength deielectric-coating high reflection mirror.
The adoptable wavelength of described red laser is 667nm, 650nm, 640 nm, 635nm; The wavelength of green laser is 532 nm; The adoptable wavelength of blue laser is 447 nm, 457nm, 473nm.
Described X type light-combining prism is that the length of side is the block prism of 25.4mm, can be with three look laser synthetic standards white lights.
Described polarizing beam splitter mirror is that the length of side is the block prism of 25.4mm, and it has had partially and the effect of analyzing simultaneously.
Described LCOS is of a size of 0.7 inch (16:9).
The beneficial effects of the utility model: the design of this light engine has obtained relatively evenly, excitation, the high illumination hot spot of brightness; This designs on the degree true to nature of the distinct degree of gamut range, color and colour, all is better than traditional projection display system light engine far away; This design utilizes the polarization characteristic of laser, need not to obtain polarized light through polarizer again, when reducing cost, has improved the efficiency of light energy utilization; This design utilizes the narrow characteristics of laser bandwidth, make three look laser instruments order luminous by sequential control, and fluorescent lifetime is adjustable separately, having overcome traditional DLP Monolithic LC OS Projection Display utilizes the motor of high-speed rotation to drive the colour wheel high speed rotating to carry out colour filter and come control bundle to carry out sequential to show that this has further improved the efficiency of light energy utilization again.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is sequential control figure of the present utility model.
Mark among the figure: 1, red light-emitting device, 2, green luminescence device, 3, the blue light emitting device, 4, even polishing shape system, 5, beam-expanding collimation system, 6, beam shaping dissipation spot system, 7, the conjugation phase place device that disappears, 8, catoptron, 9, X type light-combining prism, 10, polarizing beam splitter mirror, 11, LCOS, 12, projection objective.
Embodiment
As shown in Figure 1, the light engine of one chip LCOS laser projection system, comprise red light-emitting device 1, green luminescence device 2 and blue light emitting device 3, be respectively equipped with catoptron 8 on the optical axis of red light-emitting device 1 and blue light emitting device 3, the intersection of the optical axis of the emergent ray of catoptron 8 and green luminescence device 2 is provided with X type light-combining prism 9, the beam projecting end of X type light-combining prism 9 is provided with polarizing beam splitter mirror 10, the both sides of polarizing beam splitter mirror 10 are respectively equipped with LCOS 11 and projection objective 12, described red light-emitting device 1, green luminescence device 2 and blue light emitting device 3 are laser instrument, at red light-emitting device 1, also be respectively equipped with even polishing shape system 4 on the optical axis of green luminescence device 2 and blue light emitting device 3, even polishing shape system 4 is by the beam-expanding collimation system 5 that sets gradually, disappear phase place device 7 of beam shaping dissipation spot system 6 and conjugation is formed beam-expanding collimation system 2, the disappear optical axis of phase place device 7 of beam shaping dissipation spot system 3 and conjugation coincides.
Described beam-expanding collimation system 5 is made up of a biconcave lens and a biconvex lens.Beam shaping dissipation spot system 6 is made up of a fourier transform lens, a phase place diffraction type optical device, a miniature rotary electric machine and the circular diffusion sheet of low-angle.Catoptron 8 is single wavelength deielectric-coating high reflection mirror.The conjugation phase place device 7 that disappears is phase place diffraction type optical device.
Described red light-emitting device 1 adoptable wavelength is 667nm, 650nm, 640 nm, 635nm; The wavelength of green luminescence device 2 is 532 nm; Blue light emitting device 3 adoptable wavelength are 447 nm, 457nm, 473nm.
Described X type light-combining prism 9 is that the length of side is the block prism of 25.4mm, can be with three look laser synthetic standards white lights.
Described polarizing beam splitter mirror 10 is that the length of side is the block prism of 25.4mm, and it has had partially and the effect of analyzing simultaneously.
Described LCOS 11 is of a size of 0.7 inch (16:9).
This light engine is luminous by the laser instrument order of three kinds of colors of sequential control, three beams of laser is by the identical even polishing shape system 4 of its corresponding three structures and the modulation of other optical device, utilize the human eye vision persistence characteristic to carry out the time colour mixture, the uniform rectangle white of the standard that synthesizes at last hot spot reflexes on the LCOS 11, by the light wave after LCOS 11 modulation, transmission enters projection objective 12 after polarizing beam splitter mirror 10 analyzings again, realizes the panchromatic demonstration of laser.
1. on behalf of red light-emitting device 1, high level light among Fig. 2, and red video signal is loaded on the LCOS, and 2. on behalf of red light-emitting device 1, low level extinguish, and corresponding red video signal is closed;
3. on behalf of green luminescence device 2, high level light, and video green signal is loaded on the LCOS, and 4. on behalf of green luminescence device 2, low level extinguish, and the respective green vision signal is closed;
5. on behalf of blue light emitting device 3, high level light, and blue video signal is loaded on the LCOS, and 6. on behalf of blue light emitting device 3, low level extinguish, and corresponding blue video signal is closed.
Red, green, blue three look laser instruments are controlled chronologically and are sent three beams of laser respectively; Three beams of laser is respectively through sparing polishing shape system 4 separately: become circular directional light through beam-expanding collimation system 5, after beam shaping dissipation spot system 6 becomes uniform rectangle directional light, again through conjugation phase place device 7 spot that dissipates once more that disappears, and make the beam cross-section size be suitable for the uniform rectangle parallel beam of LCOS 11; Red and blue light beam reflects through catoptron 8 respectively again, meets at X type light-combining prism 9 places with green beam, through X type light-combining prism 9 synthetic standards white lights; Inclined to one side through 10 of polarizing beam splitter mirrors again, reflex on the LCOS 11; The signal Processing drive system separately is loaded into trichromatic vision frequency signal on the LCOS 11 in proper order, and drive its each pixel even rectangular light spot is modulated, it is luminous to control three look laser instruments order by the loading sequence of red, green, blue trichromatic vision frequency signal simultaneously, utilize the human eye vision persistence characteristic to carry out the time colour mixture, by the light wave after LCOS 11 modulation, through polarizing beam splitter mirror 10 analyzings, transmission enters projection objective 12 again, realizes the panchromatic demonstration of laser.
Claims (4)
1. the light engine of one chip LCOS laser projection system, comprise red light-emitting device (1), green luminescence device (2) and blue light emitting device (3), be respectively equipped with catoptron (8) on the optical axis of red light-emitting device (1) and blue light emitting device (3), the intersection of the optical axis of the emergent ray of catoptron (8) and green luminescence device (2) is provided with X type light-combining prism (9), the beam projecting end of X type light-combining prism (9) is provided with polarizing beam splitter mirror (10), the both sides of polarizing beam splitter mirror (10) are respectively equipped with LCOS(11) and projection objective (12), it is characterized in that: described red light-emitting device (1), green luminescence device (2) and blue light emitting device (3) are laser instrument, in red light-emitting device (1), also be respectively equipped with even polishing shape system (4) on the optical axis of green luminescence device (2) and blue light emitting device (3), even polishing shape system (4) is by beam-expanding collimation system (5), beam shaping dissipation spot system (6) and the conjugation phase place device (7) that disappears is formed beam-expanding collimation system (5), the disappear optical axis of phase place device (7) of beam shaping dissipation spot system (6) and conjugation coincides.
2. the light engine of one chip LCOS laser projection system as claimed in claim 1 is characterized in that: described beam-expanding collimation system (5) is made up of a biconcave lens and a biconvex lens.
3. the light engine of one chip LCOS laser projection system as claimed in claim 1 is characterized in that: described beam shaping dissipation spot system (6) is made up of a fourier transform lens, a phase place diffraction type optical device, a miniature rotary electric machine and the circular diffusion sheet of low-angle.
4. the light engine of one chip LCOS laser projection system as claimed in claim 1 is characterized in that: described catoptron (8) is single wavelength deielectric-coating high reflection mirror.
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| CN2010206796356U CN201886267U (en) | 2010-12-25 | 2010-12-25 | Optical engine of monolithic LCOS (liquid crystal on silicon) laser projection system |
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| CN2010206796356U CN201886267U (en) | 2010-12-25 | 2010-12-25 | Optical engine of monolithic LCOS (liquid crystal on silicon) laser projection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096293A (en) * | 2011-01-30 | 2011-06-15 | 河南科技大学 | Optical engine for three-piece liquid crystal on silicon (LCOS) laser projection display |
| CN102608855A (en) * | 2012-03-19 | 2012-07-25 | 中国科学院半导体研究所 | Lamp optical system for projected display of 3-LCOS (Liquid Crystal On Silicon) laser |
| CN106291965A (en) * | 2016-08-26 | 2017-01-04 | 湖北久之洋红外系统股份有限公司 | A kind of without speckle tricolor laser light source and laser projection system |
| CN109856798A (en) * | 2018-12-29 | 2019-06-07 | 联想(北京)有限公司 | Show equipment |
-
2010
- 2010-12-25 CN CN2010206796356U patent/CN201886267U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096293A (en) * | 2011-01-30 | 2011-06-15 | 河南科技大学 | Optical engine for three-piece liquid crystal on silicon (LCOS) laser projection display |
| CN102096293B (en) * | 2011-01-30 | 2012-06-27 | 河南科技大学 | Optical engine for three-piece liquid crystal on silicon (LCOS) laser projection display |
| CN102608855A (en) * | 2012-03-19 | 2012-07-25 | 中国科学院半导体研究所 | Lamp optical system for projected display of 3-LCOS (Liquid Crystal On Silicon) laser |
| CN106291965A (en) * | 2016-08-26 | 2017-01-04 | 湖北久之洋红外系统股份有限公司 | A kind of without speckle tricolor laser light source and laser projection system |
| CN106291965B (en) * | 2016-08-26 | 2019-10-29 | 湖北久之洋红外系统股份有限公司 | A kind of no speckle tricolor laser light source and laser projection system |
| CN109856798A (en) * | 2018-12-29 | 2019-06-07 | 联想(北京)有限公司 | Show equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131225 |