JPH0175220U - - Google Patents
Info
- Publication number
- JPH0175220U JPH0175220U JP1987171696U JP17169687U JPH0175220U JP H0175220 U JPH0175220 U JP H0175220U JP 1987171696 U JP1987171696 U JP 1987171696U JP 17169687 U JP17169687 U JP 17169687U JP H0175220 U JPH0175220 U JP H0175220U
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- blades
- diaphragm device
- iris diaphragm
- opened
- 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
Landscapes
- Diaphragms For Cameras (AREA)
Description
第１図ａ〜ｃは、この考案の虹彩絞り装置の開
放時の正面図、第２図ａ，ｂは直線状内縁を持つ
絞り羽根と円形開口からなる装置、第３図ａ，ｂ
は「く」字型内縁を持つ絞り羽根と円形開口から
なる従来装置の正面図である。
１，１０……絞り地板、１ａ，１０ａ……開口
、１ｂ，１０ｂ……非開口部、２，２０……絞り
羽根、２ａ，２０ａ……（羽根）内縁、２ｂ，２
０ｂ……（羽根）外縁、３，３０……絞り孔。
Figures 1 a to c are front views of the iris diaphragm device of this invention when opened; Figures 2 a and b are devices consisting of aperture blades with linear inner edges and a circular aperture; Figures 3 a and b
is a front view of a conventional device consisting of aperture blades having a dogleg-shaped inner edge and a circular aperture. 1, 10...Aperture base plate, 1a, 10a...Aperture, 1b, 10b...Non-aperture, 2,20...Aperture blade, 2a, 20a...(blade) inner edge, 2b, 2
0b... (blade) outer edge, 3, 30... aperture hole.
Claims (1)
覆う複数枚の絞り羽根の開放時の絞り孔形状と同
形に形成したことを特徴とする虹彩絞り装置。 (2) 前記絞り羽根が、３枚で構成され、かつ開
放時の絞り孔形状が６角形となるように組み合わ
されたものである実用新案登録請求の範囲第１項
記載の虹彩絞り装置。 (3) 前記絞り羽根の外縁が開放時に前記絞り地
板の外周と一致するものである実用新案登録請求
の範囲第１項または第２項記載の虹彩絞り装置。[Scope of Claim for Utility Model Registration] (1) An iris diaphragm device characterized in that an aperture provided in the center of an aperture base plate is formed in the same shape as the aperture hole shape when a plurality of aperture blades covering the aperture are open. . (2) The iris diaphragm device according to claim 1, wherein the diaphragm blades are composed of three blades and are combined so that the aperture hole shape when opened is hexagonal. (3) The iris diaphragm device according to claim 1 or 2, wherein the outer edge of the aperture blade coincides with the outer circumference of the aperture base plate when the aperture blade is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171696U JPH0175220U (en) | 1987-11-10 | 1987-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171696U JPH0175220U (en) | 1987-11-10 | 1987-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0175220U true JPH0175220U (en) | 1989-05-22 |
Family
ID=31463711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171696U Pending JPH0175220U (en) | 1987-11-10 | 1987-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0175220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023156697A (en) * | 2022-04-13 | 2023-10-25 | 内田工事株式会社 | orifice obturator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619913B2 (en) * | 1976-10-27 | 1986-03-26 | Daihen Kk |
-
1987
- 1987-11-10 JP JP1987171696U patent/JPH0175220U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619913B2 (en) * | 1976-10-27 | 1986-03-26 | Daihen Kk |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023156697A (en) * | 2022-04-13 | 2023-10-25 | 内田工事株式会社 | orifice obturator |