CN100460928C - Optical path system of projection TV - Google Patents
Optical path system of projection TV Download PDFInfo
- Publication number
- CN100460928C CN100460928C CNB2005100327531A CN200510032753A CN100460928C CN 100460928 C CN100460928 C CN 100460928C CN B2005100327531 A CNB2005100327531 A CN B2005100327531A CN 200510032753 A CN200510032753 A CN 200510032753A CN 100460928 C CN100460928 C CN 100460928C
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- Prior art keywords
- catoptron
- display screen
- mirror
- projection
- path system
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- 230000003287 optical effect Effects 0.000 title description 2
- 238000009738 saturating Methods 0.000 claims description 23
- 230000003760 hair shine Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
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- Overhead Projectors And Projection Screens (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The invention relates to a light-path system for projection TV. Wherein, the said TV comprises a shell with an embedded display screen; the light-path system is arranged in the shell, which comprises: a light machine on shell bottom to project the light signal to its first reflector, a third reflector in the shell backside, and a reflection-penetrated lens behind the display to cover some area with a second reflector underside. Wherein, the light signal from said light machine goes through the first and second reflector, the reflection-penetrated lens, the third reflector, and the reflection-penetrated lens till the display. This invention can reduce greatly the TV thickness and volume.
Description
Technical field
The present invention relates to a kind of projection TV set, particularly relate to a kind of light path system structure of projection TV.
Background technology
Along with the raising of people's living standard, increasing family wishes to have the projection TV of the jumbotron of high-resolution, and present various LCD projecting system are to realize the good method of high definition jumbotron projection TV.Characteristics such as but family's request for utilization optical projection system has the light source of low-cost long-life, the enough direct received television signal of brightness, energy, color representation will reach the level that present TV has, and stable performance and price of complete machine are low.As No. 01279604.2 utility model patent of China national Department of Intellectual Property in Granted publication on September 18th, 2002, its name is called " long-life high brightness giant-screen family expenses lcd projection tv ", it has realized the function of high brightness, but it also has shortcoming, be that its volume is big, need take very big space, because, light path system in it has only passed through primary event, so need very big space to finish the transmission of light signal.
Summary of the invention
Technical matters to be solved by this invention is: a kind of repeatedly reflection that can realize light signal is provided, thereby reduces the projection TV light path system of the thickness of projection TV body greatly.
The technical solution adopted in the present invention is: a kind of light path system of projection TV, projection TV comprises shell and display screen, display screen is embedded on shell, this light path system just is arranged on enclosure, this light path system includes ray machine, first catoptron, ray machine is located at the bottom of shell, and the light signal of ray machine directly is incident upon on first catoptron, further include second catoptron, the 3rd catoptron and saturating anti-mirror, this saturating anti-mirror is located at the display screen back and covers its subregion, and saturating anti-mirror downside is provided with described second catoptron; And first catoptron and the 3rd catoptron are located at the rear side of the inside of shell, the light signal that ray machine sent shines on the display screen through first catoptron, second catoptron and saturating anti-mirror, the 3rd catoptron, saturating anti-mirror successively, when light signal during from first mirror reflects to saturating anti-mirror, incident angle is greater than the critical angle of saturating anti-mirror total reflection, thereby makes light signal all be reflexed to the 3rd catoptron; When light signal through the 3rd mirror reflects to the saturating anti-mirror of display screen lap the time, incident angle is less than the critical angle of saturating anti-mirror total reflection, thereby makes light signal can be transmitted through display screen.
Beneficial effect of the present invention is: the light path system of projection TV of the present invention passes through to realize the repeatedly reflection of light signal in limited space, and reduces the thickness of projection TV body, reduced volume greatly with this.
Description of drawings
Fig. 1 is the structural representation of the light path system of projection TV of the present invention.
Fig. 2 is the light path transfer principle synoptic diagram of the light path system of projection TV of the present invention.
Fig. 3 is the light path synoptic diagram of the light path system of projection TV of the present invention.
Fig. 4 is the partial enlarged drawing of III part among Fig. 3.
Embodiment
See also shown in Figure 1ly, the present invention is mainly used in the projection TV, and this projection TV comprises shell 8 and display screen 7, and display screen 7 is embedded on shell 8, and light path of the present invention just is arranged in the shell 8.The light path system of projection TV of the present invention comprises ray machine 1, first catoptron 2, second catoptron 3, the 3rd catoptron 4, saturating anti-mirror 5 and Fresnel Lenses 6.Wherein, wherein Fresnel Lenses 6 and display screen 7 relative set, to be it identical with display screen 7 sizes or be slightly larger than display screen 7, it is installed in display screen 7 rear sides, and saturating anti-mirror 5 is located at display screen 7 rear sides and cover the zone, lower part of Fresnel Lenses 6, is close to anti-mirror 5 downsides to be provided with one second catoptron 3; And first catoptron 2 and the 3rd catoptron 4 are located at the rear side of the inside of shell 8, and ray machine 1 is located at the bottom of shell 8.And the 3rd catoptron 4 for settings of leaning forward with certain angle (in the present embodiment, with the direction of display screen 7 be before, a bit only for sake of convenience, rather than for limiting right of the present invention), it is certain angle with respect to display screen 7.
Below in conjunction with Fig. 2～Fig. 4, introduce principle of work of the present invention.When projection TV is worked, ray machine 1 sends light signal and is incident to first catoptron 2 and is reflected onto second catoptron 3 and saturating anti-mirror 5, the light signal that is incident to second catoptron 3 is reflected onto the 3rd catoptron 4, be incident to the light signal of anti-mirror 5 because incident angle also all is reflected onto the 3rd catoptron 4 greater than the critical angle of saturating anti-mirror 5 total reflections, light signal reflexes to Fresnel Lenses 6 through the 3rd catoptron 4, when light signal through with the saturating anti-mirror 5 of Fresnel Lenses 6 laps the time, because incident angle is less than the critical angle of total reflection, therefore light signal will be transmitted through Fresnel Lenses 6, at last, all light signals become parallel beam and are incident to demonstration on the display screen 7 through Fresnel Lenses 6 effects.Empty frame 10 among Fig. 3 is the virtual image of ray machine 1 partly.
The light path system of projection TV of the present invention passes through to realize the repeatedly reflection of light signal in limited space, and reduces the thickness of projection TV body, reduced volume greatly with this.Overcome the thick and heavy defective of existing projection TV set.
Claims (4)
1. the light path system of a projection TV, projection TV comprises shell and display screen, display screen is embedded on shell, this light path system just is arranged on enclosure, this light path system includes ray machine, first catoptron, ray machine is located at the bottom of shell, and the light signal of ray machine directly is incident upon on first catoptron, it is characterized in that: further include second catoptron, the 3rd catoptron and saturating anti-mirror, this saturating anti-mirror is located at the display screen back and covers its subregion, and saturating anti-mirror downside is provided with described second catoptron; And first catoptron and the 3rd catoptron are located at the rear side of the inside of shell, the light signal that ray machine sent shines on the display screen through first catoptron, second catoptron and saturating anti-mirror, the 3rd catoptron, saturating anti-mirror successively, when light signal during from first mirror reflects to saturating anti-mirror, incident angle is greater than the critical angle of saturating anti-mirror total reflection, thereby makes light signal all be reflexed to the 3rd catoptron; When light signal through the 3rd mirror reflects to the saturating anti-mirror of display screen lap the time, incident angle is less than the critical angle of saturating anti-mirror total reflection, thereby makes light signal can be transmitted through display screen.
2. the light path system of the projection TV shown in claim 1 is characterized in that: further include a Fresnel Lenses, and described Fresnel Lenses and display screen relative set, it is installed in the display screen rear side.
3. the light path system of projection TV as claimed in claim 2 is characterized in that: described Fresnel Lenses is identical with the display screen size or be slightly larger than display screen.
4. the light path system of projection TV as claimed in claim 1 is characterized in that: described the 3rd catoptron is with respect to display screen certain angle that leans forward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100327531A CN100460928C (en) | 2005-01-07 | 2005-01-07 | Optical path system of projection TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100327531A CN100460928C (en) | 2005-01-07 | 2005-01-07 | Optical path system of projection TV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1800910A CN1800910A (en) | 2006-07-12 |
| CN100460928C true CN100460928C (en) | 2009-02-11 |
Family
ID=36811015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100327531A Expired - Fee Related CN100460928C (en) | 2005-01-07 | 2005-01-07 | Optical path system of projection TV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100460928C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479192A (en) * | 2016-06-07 | 2017-12-15 | 安徽沃杰斯汽车科技有限公司 | Vehicle-mounted head-up display |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263671A (en) * | 1997-07-15 | 2000-08-16 | 汤姆森消费电子有限公司 | Holographic screen projection televisions with optical correction |
| JP2000298312A (en) * | 1999-04-13 | 2000-10-24 | Sony Corp | Back projection type picture display device |
| CN2511994Y (en) * | 2001-12-28 | 2002-09-18 | 邱虹云 | Household liquid crystal projection TV-set with durable and highly bright large screen |
| US20040070695A1 (en) * | 2002-10-14 | 2004-04-15 | Samsung Electronics Co., Ltd. | Optical engine of a projection television |
| JP2004294781A (en) * | 2003-03-27 | 2004-10-21 | Seiko Epson Corp | Cooling structure for projection television |
-
2005
- 2005-01-07 CN CNB2005100327531A patent/CN100460928C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263671A (en) * | 1997-07-15 | 2000-08-16 | 汤姆森消费电子有限公司 | Holographic screen projection televisions with optical correction |
| JP2000298312A (en) * | 1999-04-13 | 2000-10-24 | Sony Corp | Back projection type picture display device |
| CN2511994Y (en) * | 2001-12-28 | 2002-09-18 | 邱虹云 | Household liquid crystal projection TV-set with durable and highly bright large screen |
| US20040070695A1 (en) * | 2002-10-14 | 2004-04-15 | Samsung Electronics Co., Ltd. | Optical engine of a projection television |
| JP2004294781A (en) * | 2003-03-27 | 2004-10-21 | Seiko Epson Corp | Cooling structure for projection television |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1800910A (en) | 2006-07-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20090211 Termination date: 20140107 |