JPH0278940U - - Google Patents
Info
- Publication number
- JPH0278940U JPH0278940U JP1988157624U JP15762488U JPH0278940U JP H0278940 U JPH0278940 U JP H0278940U JP 1988157624 U JP1988157624 U JP 1988157624U JP 15762488 U JP15762488 U JP 15762488U JP H0278940 U JPH0278940 U JP H0278940U
- Authority
- JP
- Japan
- Prior art keywords
- light
- fresnel lens
- convex circular
- circular fresnel
- reflective screen
- 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
- 239000000758 substrate Substances 0.000 claims 2
- 238000009792 diffusion process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157624U JPH0278940U (zh) | 1988-12-05 | 1988-12-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157624U JPH0278940U (zh) | 1988-12-05 | 1988-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0278940U true JPH0278940U (zh) | 1990-06-18 |
Family
ID=31437227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988157624U Pending JPH0278940U (zh) | 1988-12-05 | 1988-12-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0278940U (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009192875A (ja) * | 2008-02-15 | 2009-08-27 | Seiko Epson Corp | スクリーン及び投射システム |
-
1988
- 1988-12-05 JP JP1988157624U patent/JPH0278940U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009192875A (ja) * | 2008-02-15 | 2009-08-27 | Seiko Epson Corp | スクリーン及び投射システム |
| JP4525769B2 (ja) * | 2008-02-15 | 2010-08-18 | セイコーエプソン株式会社 | スクリーン及び投射システム |
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