JPS6440837U - - Google Patents
Info
- Publication number
- JPS6440837U JPS6440837U JP13508787U JP13508787U JPS6440837U JP S6440837 U JPS6440837 U JP S6440837U JP 13508787 U JP13508787 U JP 13508787U JP 13508787 U JP13508787 U JP 13508787U JP S6440837 U JPS6440837 U JP S6440837U
- Authority
- JP
- Japan
- Prior art keywords
- screen
- light
- projection screen
- rear projection
- black stripes
- 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 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図はこの考案の一実施例を示す背面投影ス
クリーンの一部分の断面図、第２図は背面投影ス
クリーンを使用する投影装置の原理図、第３図は
従来の背面投影スクリーンを示す第２図Ａ部にお
ける拡大断面図である。
１０……スクリーン本体、１０ａ……光出射領
域、１１……ブラツクストライプ、１２……集光
レンズ面。
Fig. 1 is a cross-sectional view of a part of a rear projection screen showing an embodiment of this invention, Fig. 2 is a principle diagram of a projection device using the rear projection screen, and Fig. 3 is a cross-sectional view of a part of a rear projection screen showing a conventional rear projection screen. It is an enlarged sectional view of part A in the figure. DESCRIPTION OF SYMBOLS 10... Screen body, 10a... Light output area, 11... Black stripe, 12... Condensing lens surface.
Claims (1)
させる背面投影スクリーンであつて、スクリーン
前面に所定間隔でブラツクストライプを設けると
ともに、スクリーン背面に、スクリーン背面から
の入射光を前記各ブラツクストライプ間の光出射
領域に向けて集光させる多数の集光レンズ面を連
続させて形成したことを特徴とする背面投影スク
リーン。 This is a rear projection screen that allows a light image projected from the rear side to be observed from the front side, and black stripes are provided at a predetermined interval on the front surface of the screen, and incident light from the rear side of the screen is directed between the black stripes. A rear projection screen characterized in that a number of condensing lens surfaces are successively formed to condense light toward a light output area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13508787U JPS6440837U (en) | 1987-09-04 | 1987-09-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13508787U JPS6440837U (en) | 1987-09-04 | 1987-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6440837U true JPS6440837U (en) | 1989-03-10 |
Family
ID=31394408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13508787U Pending JPS6440837U (en) | 1987-09-04 | 1987-09-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6440837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003114481A (en) * | 2001-10-05 | 2003-04-18 | Mitsubishi Electric Corp | Translucent screen and projection type display |
-
1987
- 1987-09-04 JP JP13508787U patent/JPS6440837U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003114481A (en) * | 2001-10-05 | 2003-04-18 | Mitsubishi Electric Corp | Translucent screen and projection type display |