JPH01151686U - - Google Patents
Info
- Publication number
- JPH01151686U JPH01151686U JP4676088U JP4676088U JPH01151686U JP H01151686 U JPH01151686 U JP H01151686U JP 4676088 U JP4676088 U JP 4676088U JP 4676088 U JP4676088 U JP 4676088U JP H01151686 U JPH01151686 U JP H01151686U
- Authority
- JP
- Japan
- Prior art keywords
- projection
- tubes
- images
- sides
- light beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000001747 pupil Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案実施例のプロジエクシヨンテレ
ビの基本構成を示す図、第２図は実施例における
ＣＲＴ投写管と投影レンズの構成を示す図、第３
図は実施例におけるＣＲＴ投写管の配設位置と遮
蔽効果の作用位置を説明する図、第４図は本考案
の課題を説明する図、第５図は本考案に係わる背
面投射型プロジエクシヨンテレビの基本構成を示
す図である。
１……ＣＲＴ投写管、２……集光用レンズ群、
３……レンズ止金具、３ａ１，３ａ２……遮蔽板
、４……スクリーン。
FIG. 1 is a diagram showing the basic configuration of a projection television according to an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of a CRT projection tube and a projection lens in the embodiment, and FIG.
The figure is a diagram explaining the arrangement position of the CRT projection tube and the working position of the shielding effect in the embodiment, Figure 4 is a diagram explaining the problem of the present invention, and Figure 5 is a diagram showing the rear projection type projection according to the present invention. FIG. 1 is a diagram showing the basic configuration of a television. 1... CRT projection tube, 2... Focusing lens group,
3... Lens clasp, 3a 1 , 3a 2 ... Shielding plate, 4... Screen.
Claims (1)
の投写管を略一列に配置し、該３つの投写管の画
像を投影レンズによつてスクリーン上でカラー合
成して投影するようにしたプロジエクシヨンテレ
ビにおいて、 前記３つの投写管のうち左右両側の２管の投写
管について、各入射瞳の配列した３管の両外側に
なる片側一部で光束を遮蔽する遮蔽部材を各投影
レンズの集光用レンズ群と各投写管との間にそれ
ぞれ設け、該両側２管の投写管で光束の一部を遮
蔽するようにしたことを特徴とするプロジエクシ
ヨンテレビ。[Claims for Utility Model Registration] Three projection tubes displaying blue, green, and red images are arranged approximately in a row, and the images of the three projection tubes are combined in color on a screen using a projection lens. In a projection television that is configured to project images, for two of the three projection tubes on both the left and right sides, a shielding system is used to block the light beam at a portion of one side on both sides of the three tubes in which each entrance pupil is arranged. A projection television characterized in that a member is provided between a condensing lens group of each projection lens and each projection tube, and a part of the light beam is blocked by the two projection tubes on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046760U JPH0625105Y2 (en) | 1988-04-08 | 1988-04-08 | Projection tv |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046760U JPH0625105Y2 (en) | 1988-04-08 | 1988-04-08 | Projection tv |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01151686U true JPH01151686U (en) | 1989-10-19 |
| JPH0625105Y2 JPH0625105Y2 (en) | 1994-06-29 |
Family
ID=31273013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988046760U Expired - Lifetime JPH0625105Y2 (en) | 1988-04-08 | 1988-04-08 | Projection tv |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625105Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53101933A (en) * | 1977-02-17 | 1978-09-05 | Matsushita Electric Ind Co Ltd | Picture-projector |
-
1988
- 1988-04-08 JP JP1988046760U patent/JPH0625105Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53101933A (en) * | 1977-02-17 | 1978-09-05 | Matsushita Electric Ind Co Ltd | Picture-projector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0625105Y2 (en) | 1994-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01151686U (en) | ||
| SE7603225L (en) | COLOR IMAGE PROJECTION DEVICE | |
| JPS6361886U (en) | ||
| JPS643834U (en) | ||
| JP3375604B2 (en) | Optical system in projection television receiver | |
| JPS62127512U (en) | ||
| JPH0347591U (en) | ||
| JPS6230485U (en) | ||
| JPS62127184U (en) | ||
| JPH0165569U (en) | ||
| JPS643885U (en) | ||
| JPS6355688U (en) | ||
| JPS643274U (en) | ||
| JPS63192791U (en) | ||
| JPS61100087U (en) | ||
| JPS6317393B2 (en) | ||
| JPS59104674U (en) | Cathode ray tube mounting device for color image projection | |
| JPS6175677U (en) | ||
| JPH02119683U (en) | ||
| JPH0467878U (en) | ||
| JPH0185781U (en) | ||
| JPH02120968U (en) | ||
| JPH07226946A (en) | Projection television receiver | |
| JPH01126668U (en) | ||
| JPS6390384U (en) |