JPS6488438A - Screen - Google Patents
ScreenInfo
- Publication number
- JPS6488438A JPS6488438A JP62245102A JP24510287A JPS6488438A JP S6488438 A JPS6488438 A JP S6488438A JP 62245102 A JP62245102 A JP 62245102A JP 24510287 A JP24510287 A JP 24510287A JP S6488438 A JPS6488438 A JP S6488438A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- projection
- recess
- crest
- valley
- 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
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
PURPOSE:To uniformize the brightness of an entire screen in the range of wide angle by making the depth from a crest to a valley in a projection and recess shape of the surface of a screen shallow in the center part of the screen and making it deeper closer to both ends. CONSTITUTION:The sheet of a organic material, such as vinyl chloride, etc., or an inorganic material such as aluminum, etc., is used for the base 4 of the screen. The projection and recess shapes 5 and 6 are formed by processing the surface of the base 4 in proper pitch to become a wave shape, on whose surface the film of aluminum, etc., is formed in order to effectively reflect a light beam. And the screen is formed symmetrically in the right and the left so that the depth from the crest to the valley of the projection and recess shape 5 is made shallow in the center part of the screen and it is made deeper closer to the projection and recess shapes 6 on both ends in the horizontal direction of the screen. Thus, the brightness of the entire screen can be nearly uniformized.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62245102A JPS6488438A (en) | 1987-09-29 | 1987-09-29 | Screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62245102A JPS6488438A (en) | 1987-09-29 | 1987-09-29 | Screen |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6488438A true JPS6488438A (en) | 1989-04-03 |
Family
ID=17128643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62245102A Pending JPS6488438A (en) | 1987-09-29 | 1987-09-29 | Screen |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6488438A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009186873A (en) * | 2008-02-08 | 2009-08-20 | Seiko Epson Corp | Reflection screen and method for manufacturing the same |
JP2010085883A (en) * | 2008-10-02 | 2010-04-15 | Seiko Epson Corp | Screen and method for manufacturing screen |
JP2011164391A (en) * | 2010-02-10 | 2011-08-25 | Seiko Epson Corp | Reflective screen |
-
1987
- 1987-09-29 JP JP62245102A patent/JPS6488438A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009186873A (en) * | 2008-02-08 | 2009-08-20 | Seiko Epson Corp | Reflection screen and method for manufacturing the same |
JP2010085883A (en) * | 2008-10-02 | 2010-04-15 | Seiko Epson Corp | Screen and method for manufacturing screen |
JP2011164391A (en) * | 2010-02-10 | 2011-08-25 | Seiko Epson Corp | Reflective screen |
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