JPH01153532U - - Google Patents

Info

Publication number
JPH01153532U
JPH01153532U JP5061288U JP5061288U JPH01153532U JP H01153532 U JPH01153532 U JP H01153532U JP 5061288 U JP5061288 U JP 5061288U JP 5061288 U JP5061288 U JP 5061288U JP H01153532 U JPH01153532 U JP H01153532U
Authority
JP
Japan
Prior art keywords
aperture
neutral density
blades
density filter
aperture 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
Application number
JP5061288U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP5061288U priority Critical patent/JPH01153532U/ja
Publication of JPH01153532U publication Critical patent/JPH01153532U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Diaphragms For Cameras (AREA)
  • Blocking Light For Cameras (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の１実施例に係る絞り機構を被
写体側から見た機構図、第２図は第１図に示す各
絞り羽根及びＮＤフイルタを絞り込んだ状態を示
す平面図、第３図は従来の絞り機構の機構図。 ２０ａ……アパーチユア、２１，２２，２３…
…軸、２４，２５，２６……絞り羽根、３２，３
３……ＮＤフイルタ。 Fig. 1 is a mechanical diagram of an aperture mechanism according to an embodiment of the present invention as seen from the subject side, Fig. 2 is a plan view showing the aperture blades and ND filter shown in Fig. 1 in a closed state, and Fig. 3 is a mechanical diagram of a conventional aperture mechanism. 20a...Aperture your, 21, 22, 23...
...Axis, 24, 25, 26...Aperture blade, 32, 3
3...ND filter.

Claims (1)

【実用新案登録請求の範囲】 (1) アパーチユアの周囲に設けられた複数の絞
り羽根を揺動させて前記アパーチユアの口径を調
整する様にした絞り装置において、 前記絞り羽根の枚数以下の複数の減光フイルタ
を対応する枚数の前記絞り羽根と一体動作をなす
様に設け、 該複数の減光フイルタのアパーチユア側の外縁
を対応する前記絞り羽根のアパーチユア側の外縁
よりも光軸方向に張り出す様になし、 該複数の減光フイルタの合成透過濃度が所望さ
れる透過濃度となる様にしたことを特徴とする絞
り装置における減光フイルタの装入機構。 (2) 実用新案登録請求の範囲第１項記載の絞り
装置における減光フイルタの装入機構において、 前記複数の絞り羽根中の最も外側の絞り羽根の
外側と、前記複数の絞り羽根中の最も内側の絞り
羽根の内側に、各々１枚ずつ減光フイルタを設け
たことを特徴とする絞り装置における減光フイル
タの装入機構。[Claims for Utility Model Registration] (1) In an aperture device that adjusts the aperture diameter of the aperture by swinging a plurality of aperture blades provided around the aperture, A neutral density filter is provided so as to operate integrally with a corresponding number of the aperture blades, and the outer edges of the plurality of neutral density filters on the aperture side are extended in the optical axis direction beyond the outer edges of the corresponding aperture blades on the aperture side. A mechanism for loading a neutral density filter in a diaphragm device, characterized in that the combined transmission density of the plurality of neutral density filters becomes a desired transmission density. (2) In the loading mechanism for a neutral density filter in an aperture device according to claim 1 of the utility model registration, the outermost aperture blade of the plurality of aperture blades and the outermost aperture blade of the plurality of aperture blades are provided. A mechanism for inserting a neutral density filter in an aperture device, characterized in that one neutral density filter is provided inside each of the inner aperture blades.
JP5061288U 1988-04-15 1988-04-15 Pending JPH01153532U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5061288U JPH01153532U (en) 1988-04-15 1988-04-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5061288U JPH01153532U (en) 1988-04-15 1988-04-15

Publications (1)

Publication Number Publication Date
JPH01153532U true JPH01153532U (en) 1989-10-23

Family

ID=31276650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5061288U Pending JPH01153532U (en) 1988-04-15 1988-04-15

Country Status (1)

Country Link
JP (1) JPH01153532U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267530A (en) * 1988-09-01 1990-03-07 Canon Electron Inc Light quantity control diaphragm
JPH02190833A (en) * 1989-01-20 1990-07-26 Canon Electron Inc Diaphragm device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117127A (en) * 1976-03-26 1977-10-01 Fuji Photo Optical Co Ltd Iris diaphragm
JPS6134530A (en) * 1984-07-26 1986-02-18 Asahi Seimitsu Kk Iris sectors
JPH01252946A (en) * 1988-03-31 1989-10-09 Matsushita Electric Ind Co Ltd Diaphragm device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117127A (en) * 1976-03-26 1977-10-01 Fuji Photo Optical Co Ltd Iris diaphragm
JPS6134530A (en) * 1984-07-26 1986-02-18 Asahi Seimitsu Kk Iris sectors
JPH01252946A (en) * 1988-03-31 1989-10-09 Matsushita Electric Ind Co Ltd Diaphragm device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267530A (en) * 1988-09-01 1990-03-07 Canon Electron Inc Light quantity control diaphragm
JPH02190833A (en) * 1989-01-20 1990-07-26 Canon Electron Inc Diaphragm device

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