JPS63165640U - - Google Patents
Info
- Publication number
- JPS63165640U JPS63165640U JP5937887U JP5937887U JPS63165640U JP S63165640 U JPS63165640 U JP S63165640U JP 5937887 U JP5937887 U JP 5937887U JP 5937887 U JP5937887 U JP 5937887U JP S63165640 U JPS63165640 U JP S63165640U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- mirror
- fresnel mirror
- fresnel
- flat surface
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5937887U JPH0442831Y2 (fr) | 1987-04-20 | 1987-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5937887U JPH0442831Y2 (fr) | 1987-04-20 | 1987-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63165640U true JPS63165640U (fr) | 1988-10-28 |
| JPH0442831Y2 JPH0442831Y2 (fr) | 1992-10-09 |
Family
ID=30890814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5937887U Expired JPH0442831Y2 (fr) | 1987-04-20 | 1987-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442831Y2 (fr) |
-
1987
- 1987-04-20 JP JP5937887U patent/JPH0442831Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442831Y2 (fr) | 1992-10-09 |
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