JP2000111970A5 - - Google Patents
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- Publication number
- JP2000111970A5 JP2000111970A5 JP1998300343A JP30034398A JP2000111970A5 JP 2000111970 A5 JP2000111970 A5 JP 2000111970A5 JP 1998300343 A JP1998300343 A JP 1998300343A JP 30034398 A JP30034398 A JP 30034398A JP 2000111970 A5 JP2000111970 A5 JP 2000111970A5
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- aperture
- fixed
- opening
- blades
- 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
Description
【特許請求の範囲】
【請求項１】 少なくとも２枚の絞り羽根と、
前記少なくとも２枚の絞り羽根を保持する保持部材と、を有する絞り機構であって、
所定の開口径を有する固定絞りを有し、
前記少なくとも２枚の絞り羽根はＮＤフイルターが固定された絞り羽根を備え、
開放時の絞り径は前記固定絞りの開口径で規定され、該開放から所定の絞り位置までは、前記ＮＤフイルターは前記固定絞りの開口部を覆い且つ前記少なくとも２枚の絞り羽根は前記固定絞りの開口を覆わないことを特徴とする絞り機構。
【請求項２】 前記固定絞りは前記保持部材に設けられていることを特徴とする請求項１の絞り機構。
【請求項３】 前記請求項１の絞り機構を有するレンズ鏡筒。
【請求項４】 前記請求項１の絞り機構を有するカメラ。
[Claims]
[Claim 1] With at least two diaphragm blades
A diaphragm mechanism having a holding member for holding at least two diaphragm blades.
It has a fixed aperture with a given aperture diameter and
The at least two diaphragm blades include diaphragm blades to which an ND filter is fixed.
The aperture diameter at the time of opening is defined by the opening diameter of the fixed diaphragm, and from the opening to a predetermined diaphragm position, the ND filter covers the opening of the fixed diaphragm and at least two diaphragm blades are the fixed diaphragm. Aperture mechanism that does not cover the opening of the aperture.
2. The diaphragm mechanism according to claim 1, wherein the fixed diaphragm is provided on the holding member.
3. The lens barrel having the aperture mechanism of claim 1.
4. A camera having the aperture mechanism of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10300343A JP2000111970A (en) | 1998-10-08 | 1998-10-08 | Diaphragm mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10300343A JP2000111970A (en) | 1998-10-08 | 1998-10-08 | Diaphragm mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000111970A JP2000111970A (en) | 2000-04-21 |
| JP2000111970A5 true JP2000111970A5 (en) | 2005-11-24 |
Family
ID=17883643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10300343A Pending JP2000111970A (en) | 1998-10-08 | 1998-10-08 | Diaphragm mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000111970A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006145739A (en) * | 2004-11-18 | 2006-06-08 | Sony Corp | Imaging apparatus and light quantity adjusting mechanism |
| JP5428504B2 (en) | 2009-04-30 | 2014-02-26 | 株式会社Ｊｖｃケンウッド | LIGHT CONTROL DEVICE, IMAGING DEVICE, AND LIGHT CONTROL METHOD |
| JP2011112946A (en) | 2009-11-27 | 2011-06-09 | Victor Co Of Japan Ltd | Diaphragm mechanism |
| CN102662203B (en) * | 2012-05-14 | 2015-05-13 | 北京国科世纪激光技术有限公司 | Diaphragm |
-
1998
- 1998-10-08 JP JP10300343A patent/JP2000111970A/en active Pending
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