JPH0258741U - - Google Patents
Info
- Publication number
- JPH0258741U JPH0258741U JP1988138761U JP13876188U JPH0258741U JP H0258741 U JPH0258741 U JP H0258741U JP 1988138761 U JP1988138761 U JP 1988138761U JP 13876188 U JP13876188 U JP 13876188U JP H0258741 U JPH0258741 U JP H0258741U
- Authority
- JP
- Japan
- Prior art keywords
- screen
- total reflection
- lens unit
- mirror film
- reflection surface
- 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
- 230000003287 optical effect Effects 0.000 claims 1
- 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による背面投影ス
クリーンのレンズ単位の拡大図、第２図は従来の
背面投影スクリーンの一部を拡大して示す斜視図
、第３図は同スクリーンのレンズ単位の拡大図、
第４図は配光分布図である。
１…スクリーン本体、２…レンチキユラーレン
ズ、３…レンズ単位、４…レンズ部、５…全反射
部、６…ブラツクストライプ、７…ミラー膜。
Fig. 1 is an enlarged view of a lens unit of a rear projection screen according to an embodiment of this invention, Fig. 2 is an enlarged perspective view of a part of a conventional rear projection screen, and Fig. 3 is a lens unit of the same screen. Enlarged view of
FIG. 4 is a light distribution diagram. DESCRIPTION OF SYMBOLS 1... Screen body, 2... Lenticular lens, 3... Lens unit, 4... Lens part, 5... Total reflection part, 6... Black stripe, 7... Mirror film.
Claims (1)
させるスクリーンであつて、かつスクリーン表面
に、中間のレンズ部と、このレンズ部の両側に配
置する全反射面部とで構成されるレンズ単位が連
続して配列するレンチキユラーレンズを形成して
なるものにおいて、前記各レンズ単位の各全反射
面部の表面に光の反射が可能なミラー膜を形成し
、このミラー膜の表面にブラツクストライプを形
成したことを特徴とする背面投影スクリーン。 A screen that allows an optical image projected from the back side to be observed from the front side, and a lens unit consisting of an intermediate lens part and total reflection surface parts arranged on both sides of this lens part is continuous on the screen surface. A mirror film capable of reflecting light is formed on the surface of each total reflection surface portion of each lens unit, and a black stripe is formed on the surface of this mirror film. A rear projection screen featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988138761U JPH0258741U (en) | 1988-10-25 | 1988-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988138761U JPH0258741U (en) | 1988-10-25 | 1988-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0258741U true JPH0258741U (en) | 1990-04-26 |
Family
ID=31401401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988138761U Pending JPH0258741U (en) | 1988-10-25 | 1988-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0258741U (en) |
-
1988
- 1988-10-25 JP JP1988138761U patent/JPH0258741U/ja active Pending
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