JPH0518749Y2 - - Google Patents
Info
- Publication number
- JPH0518749Y2 JPH0518749Y2 JP1987046178U JP4617887U JPH0518749Y2 JP H0518749 Y2 JPH0518749 Y2 JP H0518749Y2 JP 1987046178 U JP1987046178 U JP 1987046178U JP 4617887 U JP4617887 U JP 4617887U JP H0518749 Y2 JPH0518749 Y2 JP H0518749Y2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- screen
- total reflection
- light
- rising
- 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.)
- Expired - Lifetime
Links
- 230000000630 rising effect Effects 0.000 claims description 31
- 230000003287 optical effect Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987046178U JPH0518749Y2 (fr) | 1987-03-28 | 1987-03-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987046178U JPH0518749Y2 (fr) | 1987-03-28 | 1987-03-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63153245U JPS63153245U (fr) | 1988-10-07 |
JPH0518749Y2 true JPH0518749Y2 (fr) | 1993-05-18 |
Family
ID=30865600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987046178U Expired - Lifetime JPH0518749Y2 (fr) | 1987-03-28 | 1987-03-28 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0518749Y2 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59133535A (ja) * | 1983-01-20 | 1984-07-31 | Dainippon Printing Co Ltd | 透過型スクリ−ン |
JPS59193436A (ja) * | 1983-04-18 | 1984-11-02 | Victor Co Of Japan Ltd | 透過式スクリ−ン |
JPS60159733A (ja) * | 1983-12-30 | 1985-08-21 | ノ−ス・アメリカン・フィリップス・コンシュ−マ・エレクトロニクス・コ−ポレ−ション | 背面投写スクリーン |
-
1987
- 1987-03-28 JP JP1987046178U patent/JPH0518749Y2/ja not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59133535A (ja) * | 1983-01-20 | 1984-07-31 | Dainippon Printing Co Ltd | 透過型スクリ−ン |
JPS59193436A (ja) * | 1983-04-18 | 1984-11-02 | Victor Co Of Japan Ltd | 透過式スクリ−ン |
JPS60159733A (ja) * | 1983-12-30 | 1985-08-21 | ノ−ス・アメリカン・フィリップス・コンシュ−マ・エレクトロニクス・コ−ポレ−ション | 背面投写スクリーン |
Also Published As
Publication number | Publication date |
---|---|
JPS63153245U (fr) | 1988-10-07 |
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