JPH055749Y2 - - Google Patents
Info
- Publication number
- JPH055749Y2 JPH055749Y2 JP1988127052U JP12705288U JPH055749Y2 JP H055749 Y2 JPH055749 Y2 JP H055749Y2 JP 1988127052 U JP1988127052 U JP 1988127052U JP 12705288 U JP12705288 U JP 12705288U JP H055749 Y2 JPH055749 Y2 JP H055749Y2
- Authority
- JP
- Japan
- Prior art keywords
- screen
- fresnel lens
- projection
- lens
- focal length
- 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
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988127052U JPH055749Y2 (US06650917-20031118-M00005.png) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988127052U JPH055749Y2 (US06650917-20031118-M00005.png) | 1988-09-30 | 1988-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0165569U JPH0165569U (US06650917-20031118-M00005.png) | 1989-04-26 |
JPH055749Y2 true JPH055749Y2 (US06650917-20031118-M00005.png) | 1993-02-15 |
Family
ID=31379127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988127052U Expired - Lifetime JPH055749Y2 (US06650917-20031118-M00005.png) | 1988-09-30 | 1988-09-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH055749Y2 (US06650917-20031118-M00005.png) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2542103B2 (ja) * | 1990-04-25 | 1996-10-09 | パイオニア株式会社 | リアプロジェクションテレビの製造方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5251538U (US06650917-20031118-M00005.png) * | 1975-10-09 | 1977-04-13 |
-
1988
- 1988-09-30 JP JP1988127052U patent/JPH055749Y2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5251538U (US06650917-20031118-M00005.png) * | 1975-10-09 | 1977-04-13 |
Also Published As
Publication number | Publication date |
---|---|
JPH0165569U (US06650917-20031118-M00005.png) | 1989-04-26 |
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