CN202551210U - Ultra-thin laser rear-projection television - Google Patents
Ultra-thin laser rear-projection television Download PDFInfo
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- CN202551210U CN202551210U CN2011205770550U CN201120577055U CN202551210U CN 202551210 U CN202551210 U CN 202551210U CN 2011205770550 U CN2011205770550 U CN 2011205770550U CN 201120577055 U CN201120577055 U CN 201120577055U CN 202551210 U CN202551210 U CN 202551210U
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- convex mirror
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Abstract
The utility model discloses an ultra-thin laser rear-projection television. A projection display system is composed of a laser component, an optical machine, a signal processing circuit board, a power supply circuit board, a plane mirror, a convex mirror and a display screen, wherein a projection lens of the projection display system is an off-axis lens; the plane mirror is a first reflective mirror and arranged at a position close to the lower part; the convex mirror is a second reflective mirror and arranged at a position of the top part; light emitted by the optical machine first projects on the plane mirror, the light is reflected by the plane mirror to the convex mirror, a divergence angle of laser beams is increased under a divergent function of the convex mirror, and the laser beams which are fully magnified reach the display screen and image on the display screen. Compared with the prior art, the laser rear-projection television disclosed by the utility model is beautiful in colors and has long service life, and the thickness of the overall machine is decreased significantly.
Description
Technical field
The utility model belongs to the Display Technique field, is specifically related to a kind of ultra-thinization design of laser rear-projection TV.
Background technology
Rear-projection TV is a kind of projection display apparatus in the extensive use of large scale display field, and it is big that rear-projection TV has screen size with respect to the liquid crystal flat-panel TV, and image sharpness is high, and cost performance is high, outstanding advantage such as energy saving.In general, the inner space of rear-projection TV is bigger.In the inside of rear-projection TV a ray machine is arranged, ray machine is the assembly of rear-projection TV core, laser treatment device, display device (LCOS, LCD, DMD), close colour system system, projecting lens is formed by combining.It mainly acts on is to utilize the signal of telecommunication of input to control display device, thereby reaches modulated laser, makes uniform laser beam carry the purpose of epigraph signal, and laser beam is come out by projection lens projects.At the inner LASER Light Source in addition of laser television, it is the power supply module of laser television.Signal processing circuit board also is a part very important in the rear-projection TV, and the main various signals of being responsible for handling input are exported to ray machine with the signal of handling well.Also have power supply circuit board in addition in the rear-projection TV, be responsible for to ray machine and signal processing circuit power supply.There is a trapezoidal reflective mirror inboard that shell is close at the back side of rear-projection TV, and effect is to reflex to screen to the light that the ray machine camera lens casts out to get on, thereby on screen, forms images.Screen generally is made up of Fresnel screen and cylindrical surface screen in the dead ahead of rear-projection TV, and it mainly acts on is display image, the broadening visual angle.Just because of rear-projection TV is to utilize projection to come enlarged image, so significant disadvantage of rear-projection TV existence, promptly rear-projection TV complete machine thickness is bigger, gives the impression of a kind of heaviness of people.
The utility model content
For solving the above-mentioned defective that prior art exists, it is a kind of beautiful in colour that the purpose of the utility model is to provide, long service life, the ultra-thinization laser rear-projection TV that complete machine thickness significantly reduces.
For realizing above-mentioned utility model purpose; The technical scheme that the utility model adopts is: this ultra-thinization laser rear-projection TV, and the projection display system by laser module, ray machine, signal processing circuit board, power supply circuit board, level crossing, convex mirror and screen are formed is characterized in that: the projection lens of said projection display system is for leaving lens shaft; Said level crossing is first reflective mirror; Place the position near the below, said convex mirror is second reflective mirror, places tip position; The light that said ray machine casts out projects on the level crossing earlier; To convex mirror, the disperse function of convex mirror increases the angle of divergence of laser beam to light by flat mirror reflects, and the laser beam arrival screen that is fully amplified also forms images on screen.
Said laser module is the light source that red laser diode, green semiconductor laser and blue semiconductor laser constitute light engine.
Said convex mirror is the ellipsoid convex mirror.
The MD of said ray machine shows that closing the colour system system closes the colour system system for LCOS shows.
The MD of said ray machine shows that closing the colour system system closes the colour system system for 3LCD shows.
The MD of said ray machine shows that closing the colour system system closes the colour system system for DLP shows.
The beneficial effect of technique scheme: the secondary reflection mode has been adopted in this design; At first shine on the level crossing from the diverging light that sends from lens shaft; Because the angle of projection lens and the angle of level crossing cooperate rationally, scattered light is upwards reflected with almost vertical angle by level crossing.The light convex mirror that arrives soon after, the main effect of convex mirror has two, and an effect is the degree of divergence that increases laser beam, makes laser beam arrive and can on screen, demonstrate behind the screen to meet the image that the designer requires; An effect is that light is reflected, and makes light can arrive screen and imaging.
Choosing of projection lens is one of key point in this technical scheme; Choose from lens shaft; The light beam that directly casts out from camera lens is trapezoidal, after laser beam projects level crossing, is reflected by level crossing, after light arrives convex mirror; Convex mirror reflects laser beam again, and light beam forms images on screen after arriving screen.From above-mentioned description, can find out; Just form images after the projection amplification through a segment distance after light casts out from camera lens at screen; The light path of this segment distance is asymmetric light path; The light of light and the below of top the distance of process different, trapezoidal like this image passes through the rectification of asymmetric light path, the image that projects on the screen has just become perfect rectangle.
Choosing of convex mirror also is one of key point in this technical scheme, adopts the ellipsoid convex mirror, and this convex mirror is the core component that reduces the thickness of laser rear-projection TV.The laser beam that casts out from camera lens is at first reflected by level crossing, and after light beam arrived convex mirror, light beam was further dispersed, and the degree of beam divergence is different up and down, above the degree of beam divergence little, the degree of lower light misconvergence of beams is big; Left and right sides light symmetry is dispersed.Through rationally the dispersing of convex surface, light beam arrive screen just can on screen, demonstrate later on one complete, undistorted and with the screen size uniform images.
This laser projection rear-projection TV has been compared following advantage with traditional rear-projection TV:
(1) owing to adopt ultra-thinization design, the thickness of this laser rear-projection TV significantly descends, and has reached the target of ultra-thinization basically.
(2) because laser is easy to realize high luminous power output, so the brightness of this laser television can be very high.
(3) laser is 100% monochromatic light, so the colour gamut coverage rate of laser display is very high.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation.
Fig. 1 is the structural representation of ultra-thinization laser rear-projection TV.
Embodiment
Ultra-thinization laser rear-projection TV as shown in Figure 1 is made up of laser module, ray machine 1, signal processing circuit board, power supply circuit board, level crossing 2, convex mirror 4 and screen 5.Ray machine 1 is positioned at the position after the lower side of casing 3, and the red, green, blue three look laser beams that laser module sends for the red, green, blue all solid state laser incide in 3 light valves of the corresponding red, green, blue of ray machine after expanding bundle, shimming, eliminating coherence respectively; Light valve can be DMD, LCD panel or LCOS panel, is added with the coloured image modulation signal on the light valve, after red, green, blue three look laser advanced light valve (by light valve reflection or see through); Variation has taken place in luminous flux, thereby has become the red, green, blue image light signals, and red, green, blue three look laser image light signals get into the X prism color; MD shows that close the colour system system closes colour system system or 3LCD and show that closing colour system system or DLP shows and close the colour system system for LCOS shows, the light signal that closes behind the look incides projection lens, and projection lens is for leaving lens shaft; The light beam that directly casts out from camera lens is trapezoidal; Reflected by level crossing behind the level crossing 2 below laser beam projects, light is with after being close to vertical direction arrival convex mirror 4, and convex mirror reflects laser beam again; Light beam is further dispersed; And the degree of beam divergence is different up and down, above the degree of beam divergence little, the degree of lower light misconvergence of beams is big; Left and right sides light symmetry is dispersed.Light beam arrives screen 5 backs and on screen, forms images.
From above-mentioned description, can find out; Just form images after the projection amplification through a segment distance after light casts out from camera lens at screen; The light path of this segment distance is asymmetric light path; The light of light and the below of top the distance of process different, trapezoidal like this image passes through the rectification of asymmetric light path, the image that projects on the screen has just become perfect rectangle.
Claims (6)
1. ultra-thinization laser rear-projection TV, the projection display system by laser module, ray machine, signal processing circuit board, power supply circuit board, level crossing, convex mirror and screen are formed is characterized in that: the projection lens of said projection display system is for from lens shaft; Said level crossing is first reflective mirror; Place the position near the below, said convex mirror is second reflective mirror, places tip position; The light that said ray machine casts out projects on the level crossing earlier; To convex mirror, the disperse function of convex mirror increases the angle of divergence of laser beam to light by flat mirror reflects, and the laser beam arrival screen that is fully amplified also forms images on screen.
2. ultra-thinization laser rear-projection TV according to claim 1 is characterized in that: said laser module is the light source that red laser diode, green semiconductor laser and blue semiconductor laser constitute light engine.
3. ultra-thinization laser rear-projection TV according to claim 1 is characterized in that: said convex mirror is the ellipsoid convex mirror.
4. ultra-thinization laser rear-projection TV according to claim 1 is characterized in that: the MD of said ray machine shows that closing the colour system system closes the colour system system for LCOS shows.
5. ultra-thinization laser rear-projection TV according to claim 1 is characterized in that: the MD of said ray machine shows that closing the colour system system closes the colour system system for 3LCD shows.
6. ultra-thinization laser rear-projection TV according to claim 1 is characterized in that: the MD of said ray machine shows that closing the colour system system closes the colour system system for DLP shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205770550U CN202551210U (en) | 2011-12-30 | 2011-12-30 | Ultra-thin laser rear-projection television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205770550U CN202551210U (en) | 2011-12-30 | 2011-12-30 | Ultra-thin laser rear-projection television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202551210U true CN202551210U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205770550U Expired - Fee Related CN202551210U (en) | 2011-12-30 | 2011-12-30 | Ultra-thin laser rear-projection television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202551210U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI579166B (en) * | 2014-08-06 | 2017-04-21 | 揚明光學股份有限公司 | Vehicle illumination system |
| CN106941593A (en) * | 2016-01-05 | 2017-07-11 | 深圳市亿思达科技集团有限公司 | Integrated laser TV |
| CN108535942A (en) * | 2018-06-14 | 2018-09-14 | 上海中匆光电科技有限公司 | A kind of ultra-thin anti-light projection display system |
| CN111856869A (en) * | 2019-04-28 | 2020-10-30 | 青岛海信激光显示股份有限公司 | Projection screen, projection system and laser television |
| CN114721159A (en) * | 2022-03-31 | 2022-07-08 | 青岛海信激光显示股份有限公司 | Projection light source |
-
2011
- 2011-12-30 CN CN2011205770550U patent/CN202551210U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI579166B (en) * | 2014-08-06 | 2017-04-21 | 揚明光學股份有限公司 | Vehicle illumination system |
| US10443799B2 (en) | 2014-08-06 | 2019-10-15 | Young Optics Inc. | Vehicle lighting system and method of fabrication |
| CN106941593A (en) * | 2016-01-05 | 2017-07-11 | 深圳市亿思达科技集团有限公司 | Integrated laser TV |
| CN108535942A (en) * | 2018-06-14 | 2018-09-14 | 上海中匆光电科技有限公司 | A kind of ultra-thin anti-light projection display system |
| CN111856869A (en) * | 2019-04-28 | 2020-10-30 | 青岛海信激光显示股份有限公司 | Projection screen, projection system and laser television |
| CN114721159A (en) * | 2022-03-31 | 2022-07-08 | 青岛海信激光显示股份有限公司 | Projection light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20141230 |
|
| EXPY | Termination of patent right or utility model |