JPH0335531U - - Google Patents
Info
- Publication number
- JPH0335531U JPH0335531U JP9597689U JP9597689U JPH0335531U JP H0335531 U JPH0335531 U JP H0335531U JP 9597689 U JP9597689 U JP 9597689U JP 9597689 U JP9597689 U JP 9597689U JP H0335531 U JPH0335531 U JP H0335531U
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- semi
- lens system
- camera lens
- elliptical shape
- 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
- 230000007935 neutral effect Effects 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Exposure Control For Cameras (AREA)
- Diaphragms For Cameras (AREA)
- Blocking Light For Cameras (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9597689U JPH0335531U (fr) | 1989-08-16 | 1989-08-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9597689U JPH0335531U (fr) | 1989-08-16 | 1989-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0335531U true JPH0335531U (fr) | 1991-04-08 |
Family
ID=31645205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9597689U Pending JPH0335531U (fr) | 1989-08-16 | 1989-08-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0335531U (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002055374A (ja) * | 2000-08-09 | 2002-02-20 | Canon Inc | 光量調節装置、レンズ装置および撮像装置 |
| JP2008014110A (ja) * | 2006-06-30 | 2008-01-24 | Koji Kawahara | 円柱対応の梯子安定装置 |
| JP2010145941A (ja) * | 2008-12-22 | 2010-07-01 | Canon Electronics Inc | Ｎｄフィルタ及び該ｎｄフィルタを用いた光量絞り装置 |
-
1989
- 1989-08-16 JP JP9597689U patent/JPH0335531U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002055374A (ja) * | 2000-08-09 | 2002-02-20 | Canon Inc | 光量調節装置、レンズ装置および撮像装置 |
| JP2008014110A (ja) * | 2006-06-30 | 2008-01-24 | Koji Kawahara | 円柱対応の梯子安定装置 |
| JP2010145941A (ja) * | 2008-12-22 | 2010-07-01 | Canon Electronics Inc | Ｎｄフィルタ及び該ｎｄフィルタを用いた光量絞り装置 |
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