JPS6440835U - - Google Patents
Info
- Publication number
- JPS6440835U JPS6440835U JP1971688U JP1971688U JPS6440835U JP S6440835 U JPS6440835 U JP S6440835U JP 1971688 U JP1971688 U JP 1971688U JP 1971688 U JP1971688 U JP 1971688U JP S6440835 U JPS6440835 U JP S6440835U
- Authority
- JP
- Japan
- Prior art keywords
- curved concave
- reflective
- layer
- reflective layer
- curved
- 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
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims 3
- 239000011347 resin Substances 0.000 claims 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims 2
- 239000004800 polyvinyl chloride Substances 0.000 claims 2
- 239000000835 fiber Substances 0.000 claims 1
- 239000000049 pigment Substances 0.000 claims 1
- 238000007788 roughening Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1971688U JPS6440835U (en]) | 1987-04-27 | 1988-02-16 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6484487 | 1987-04-27 | ||
| JP1971688U JPS6440835U (en]) | 1987-04-27 | 1988-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6440835U true JPS6440835U (en]) | 1989-03-10 |
Family
ID=31717426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1971688U Pending JPS6440835U (en]) | 1987-04-27 | 1988-02-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6440835U (en]) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04127101A (ja) * | 1990-09-19 | 1992-04-28 | Hitachi Ltd | フレネルレンズ |
| KR100631421B1 (ko) * | 2002-11-22 | 2006-10-16 | 아오디스(주) | 투과형 및 반사형 영상 스크린과 그의 제조방법 |
| US7195850B2 (en) | 2004-03-17 | 2007-03-27 | Lexmark International, Inc. | Photoconductor with light fatigue additives |
-
1988
- 1988-02-16 JP JP1971688U patent/JPS6440835U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04127101A (ja) * | 1990-09-19 | 1992-04-28 | Hitachi Ltd | フレネルレンズ |
| KR100631421B1 (ko) * | 2002-11-22 | 2006-10-16 | 아오디스(주) | 투과형 및 반사형 영상 스크린과 그의 제조방법 |
| US7195850B2 (en) | 2004-03-17 | 2007-03-27 | Lexmark International, Inc. | Photoconductor with light fatigue additives |