JPH01108511U - - Google Patents
Info
- Publication number
- JPH01108511U JPH01108511U JP301988U JP301988U JPH01108511U JP H01108511 U JPH01108511 U JP H01108511U JP 301988 U JP301988 U JP 301988U JP 301988 U JP301988 U JP 301988U JP H01108511 U JPH01108511 U JP H01108511U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- holder
- density distribution
- central axis
- variable light
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP301988U JPH0531617Y2 (https=) | 1988-01-12 | 1988-01-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP301988U JPH0531617Y2 (https=) | 1988-01-12 | 1988-01-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01108511U true JPH01108511U (https=) | 1989-07-21 |
| JPH0531617Y2 JPH0531617Y2 (https=) | 1993-08-13 |
Family
ID=31204286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP301988U Expired - Lifetime JPH0531617Y2 (https=) | 1988-01-12 | 1988-01-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0531617Y2 (https=) |
-
1988
- 1988-01-12 JP JP301988U patent/JPH0531617Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0531617Y2 (https=) | 1993-08-13 |