JPH0230916U - - Google Patents
Info
- Publication number
- JPH0230916U JPH0230916U JP10823788U JP10823788U JPH0230916U JP H0230916 U JPH0230916 U JP H0230916U JP 10823788 U JP10823788 U JP 10823788U JP 10823788 U JP10823788 U JP 10823788U JP H0230916 U JPH0230916 U JP H0230916U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- dark box
- peephole
- convex lens
- fresnel lens
- 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
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lenses (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10823788U JPH0230916U (it) | 1988-08-19 | 1988-08-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10823788U JPH0230916U (it) | 1988-08-19 | 1988-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0230916U true JPH0230916U (it) | 1990-02-27 |
Family
ID=31343376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10823788U Pending JPH0230916U (it) | 1988-08-19 | 1988-08-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0230916U (it) |
-
1988
- 1988-08-19 JP JP10823788U patent/JPH0230916U/ja active Pending