JPS61116302U - - Google Patents
Info
- Publication number
- JPS61116302U JPS61116302U JP19739684U JP19739684U JPS61116302U JP S61116302 U JPS61116302 U JP S61116302U JP 19739684 U JP19739684 U JP 19739684U JP 19739684 U JP19739684 U JP 19739684U JP S61116302 U JPS61116302 U JP S61116302U
- Authority
- JP
- Japan
- Prior art keywords
- operating arm
- fresnel lens
- projected
- projection
- fulcrum
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
第１図はこの考案の実施例を示した斜視図、第
２図はその要部の拡大斜視図、第３〜４図はこの
考案のものの原理を示した構成図、第５図は従来
のものの原理を示した構成図、第６図はスクリー
ン上の輝度特性を示した特性図である。
１……投写管、２……投射レンズ、３……フレ
ネルレンズ、４……レンチスクリーン、５……テ
レビ本体、６……スクリーン枠、７……ガイド、
８……プレート、９……長孔、１０……駆動シヤ
フト、１１……操作アーム、１２……支点プレー
ト、１３……支点シヤフト、１４……コイル状バ
ネ、１５……ロツク板、１６……長溝、１７……
ロツク溝、１８……引張りバネ。
Fig. 1 is a perspective view showing an embodiment of this invention, Fig. 2 is an enlarged perspective view of its main parts, Figs. 3 and 4 are block diagrams showing the principle of this invention, and Fig. 5 is a conventional one. FIG. 6 is a diagram showing the brightness characteristics on the screen. 1... Projection tube, 2... Projection lens, 3... Fresnel lens, 4... Wrench screen, 5... TV body, 6... Screen frame, 7... Guide,
8... Plate, 9... Elongated hole, 10... Drive shaft, 11... Operating arm, 12... Fulcrum plate, 13... Fulcrum shaft, 14... Coiled spring, 15... Lock plate, 16... ... Nagamizo, 17...
Lock groove, 18... tension spring.
Claims (1)
びフレネルレンズを介してレンチスクリーンに投
影し、この投影された映像を上記投写管による投
影面とは反対面より目視するようにしたリアプロ
ジエクシヨンテレビにおいて、テレビ本体に支点
が取付けられ、その一方端が上記フレネルレンズ
に係合された操作アームと、この操作アームの他
方端側に設けられ、該操作アームの他方端の位置
を段階的にロツクするロツク板とを備え、上記操
作アームによつてフレネルレンズを上下方向に移
動し、ロツクさせるようにして成るリアプロジエ
クシヨンテレビにおけるフレネルレンズ上下機構
。 A rear projection television in which image light projected from a projection tube is projected onto a wrench screen via a projection lens and a Fresnel lens, and the projected image is viewed from the opposite side to the surface projected by the projection tube. A fulcrum is attached to the television body, and an operating arm having one end engaged with the Fresnel lens is provided, and a fulcrum is provided at the other end of the operating arm to lock the position of the other end of the operating arm in stages. A Fresnel lens up and down mechanism for a rear projection television, comprising a locking plate for moving the Fresnel lens in the vertical direction and locking it by the operating arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19739684U JPS61116302U (en) | 1984-12-29 | 1984-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19739684U JPS61116302U (en) | 1984-12-29 | 1984-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61116302U true JPS61116302U (en) | 1986-07-23 |
Family
ID=30755663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19739684U Pending JPS61116302U (en) | 1984-12-29 | 1984-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61116302U (en) |
-
1984
- 1984-12-29 JP JP19739684U patent/JPS61116302U/ja active Pending