CN202041725U - Light engine system for rear-projection television - Google Patents
Light engine system for rear-projection television Download PDFInfo
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- CN202041725U CN202041725U CN2011201578449U CN201120157844U CN202041725U CN 202041725 U CN202041725 U CN 202041725U CN 2011201578449 U CN2011201578449 U CN 2011201578449U CN 201120157844 U CN201120157844 U CN 201120157844U CN 202041725 U CN202041725 U CN 202041725U
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- projection
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Abstract
The utility model relates to a light engine system for a rear-projection television, which comprises an optical unit, a color light separation unit, an electric light modulation unit and a projection unit, wherein the color light separation unit is positioned in front of the optical unit, the electric light modulation unit is positioned in front of the color light separation unit, the projection unit is positioned in front of the electric light modulation unit and comprises a red light lens, a green light lens and a blue light lens, and the red light lens, the green light lens and the blue light lens have the same focal length, are in parallel arrangement and are positioned on the same straight line. The light engine system for the rear-projection television adopts the three projection lenses with the fixed focal length, the red light lens, the green light lens and the blue light lens are parallelly distributed on a machine case in the same straight line for realizing the same focal length of the three lenses, the installation is simple and convenient, and in addition, the cost of the fixed focal length lens is low.
Description
(1) technical field
The utility model relates to a kind of light engine systems of rear-projection TV.
(2) background technology
Rear-projection TV generally comprises a photo engine, according to used camera lens in the photo engine what, can be divided into single-lens photo engine and three-lens photo engine again.Single-lens photo engine is because single-lens volume is little, but its back focal length is longer, and camera lens aperture requires to strengthen, and optical modules such as employed camera lens and spectroscope are very high to the requirement of quality, precision, cause cost higher, therefore adopt the situation of three-lens photo engine more at present.
The three-lens light engine systems can project bigger picture in than short distance, adopt three camera lenses respectively red, green, blue three coloured light to be projected to imaging on the same screen, in order to make the red, green, blue image three-colo(u)r on the screen equally big, the focal length of three camera lenses is equated.Present rear-projection TV three-lens light engine systems adopts three zoom lens in order to realize the parfocal of three camera lenses, and the cost of zoom lens is higher, and also need consider three distribution relations between the zoom lens when mounted, and trouble is installed.
(3) summary of the invention
In order to overcome the above-mentioned deficiency of the three-lens light engine systems that has rear-projection TV now, the utility model provides the light engine systems of a kind of cost rear-projection TV lower, easy for installation.
The technical scheme in the invention for solving the technical problem is: a kind of light engine systems of rear-projection TV, comprise optical unit, be positioned at the coloured light separative element in described optical unit the place ahead, be positioned at the electrooptical modulation unit and the projecting cell that is positioned at the place ahead, described electrooptical modulation unit in described coloured light separative element the place ahead, described projecting cell comprises the ruddiness camera lens, green glow camera lens and blue light camera lens, described ruddiness camera lens, green glow camera lens and blue light camera lens be three focal lengths just as tight shot, described ruddiness camera lens, green glow camera lens and blue light camera lens are arranged side by side and are located on the same line.
The utility model in use, the same with existing light engine systems, optical unit sends light, isolates red, green, blue three coloured light roads through the coloured light separative element, is projected on the screen by ruddiness camera lens, green glow camera lens and blue light camera lens after the electrooptical modulation through the electrooptical modulation unit.
The beneficial effects of the utility model are: adopt three projection lens that focus distance, ruddiness camera lens, green glow camera lens and blue light camera lens are arranged in the parfocal that same straight line upper casing realized three-lens side by side, and simple installation, and focus apart from the camera lens cost lower.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, a kind of light engine systems of rear-projection TV, comprise optical unit 1, be positioned at described optical unit 1 the place ahead coloured light separative element 2, be positioned at the electrooptical modulation unit 3 in described coloured light separative element 2 the place aheads and be positioned at the projecting cell in 3 the place aheads, described electrooptical modulation unit, described projecting cell comprises ruddiness camera lens 4, green glow camera lens 5 and blue light camera lens 6, described ruddiness camera lens 4, green glow camera lens 5 and blue light camera lens 6 be three focal lengths just as tight shot, described ruddiness camera lens 4, green glow camera lens 5 and blue light camera lens 6 are arranged side by side and are located on the same line.
The utility model in use, the same with existing light engine systems, optical unit 1 sends light, isolates red, green, blue three coloured light roads through coloured light separative element 2, is projected on the screen by ruddiness camera lens 4, green glow camera lens 5 and blue light camera lens 6 after the electrooptical modulation through electrooptical modulation unit 3.
The utility model adopts three projection lens that focus distance, and ruddiness camera lens 4, green glow camera lens 5 and blue light camera lens 6 are arranged in the parfocal that same straight line upper casing realized three-lens side by side, simple installation, and focus apart from the camera lens cost lower.
Claims (1)
1. the light engine systems of a rear-projection TV, comprise optical unit, be positioned at described optical unit the place ahead the coloured light separative element, be positioned at the electrooptical modulation unit in described coloured light separative element the place ahead and be positioned at the projecting cell in the place ahead, described electrooptical modulation unit, described projecting cell comprises ruddiness camera lens, green glow camera lens and blue light camera lens, it is characterized in that: described ruddiness camera lens, green glow camera lens and blue light camera lens be three focal lengths just as tight shot, described ruddiness camera lens, green glow camera lens and blue light camera lens are arranged side by side and are located on the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201578449U CN202041725U (en) | 2011-05-16 | 2011-05-16 | Light engine system for rear-projection television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201578449U CN202041725U (en) | 2011-05-16 | 2011-05-16 | Light engine system for rear-projection television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041725U true CN202041725U (en) | 2011-11-16 |
Family
ID=44969162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201578449U Expired - Fee Related CN202041725U (en) | 2011-05-16 | 2011-05-16 | Light engine system for rear-projection television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202041725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798979A (en) * | 2012-08-15 | 2012-11-28 | 京东方科技集团股份有限公司 | 3D (three-dimensional) display device and glasses matched with same |
-
2011
- 2011-05-16 CN CN2011201578449U patent/CN202041725U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798979A (en) * | 2012-08-15 | 2012-11-28 | 京东方科技集团股份有限公司 | 3D (three-dimensional) display device and glasses matched with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20111116 Termination date: 20130516 |