JP2009020438A5 - - Google Patents

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Publication number
JP2009020438A5
JP2009020438A5 JP2007184602A JP2007184602A JP2009020438A5 JP 2009020438 A5 JP2009020438 A5 JP 2009020438A5 JP 2007184602 A JP2007184602 A JP 2007184602A JP 2007184602 A JP2007184602 A JP 2007184602A JP 2009020438 A5 JP2009020438 A5 JP 2009020438A5
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JP
Japan
Prior art keywords
case member
rotary plate
contact
plate
hole
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
Application number
JP2007184602A
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Japanese (ja)
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JP2009020438A (en
JP5173293B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2007184602A priority Critical patent/JP5173293B2/en
Priority claimed from JP2007184602A external-priority patent/JP5173293B2/en
Publication of JP2009020438A publication Critical patent/JP2009020438A/en
Publication of JP2009020438A5 publication Critical patent/JP2009020438A5/ja
Application granted granted Critical
Publication of JP5173293B2 publication Critical patent/JP5173293B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Claims (3)

ケース部材と、
ロータリープレートと、
カム穴が形成されるカムプレートと、
第１の軸部が前記ロータリープレートに形成される穴と係合し、第２の軸部が前記カムプレートに形成される前記カム穴と係合し、前記ロータリープレートが回転することで、通過する光束を変化させる絞り羽根とを有し、
前記絞り羽根が前記光束を絞るように前記ロータリープレートを回転させることで、前記ロータリープレートは前記光束の光軸方向に変位して、前記ケース部材に当接するように構成され、前記ロータリープレートが前記ケース部材に当接する際の前記ロータリープレートと前記ケース部材との当接面を前記光軸方向に対して傾斜した面とすることで、前記ロータリープレートが前記ケース部材に当接する際に、前記ロータリープレートの回転中心を前記光束の中心と一致させることを特徴とする光量調節装置。 A case member;
A rotary plate,
A cam plate in which a cam hole is formed;
The first shaft portion engages with the hole formed in the rotary plate, the second shaft portion engages with the cam hole formed in the cam plate, and the rotary plate rotates to pass. A diaphragm blade that changes the luminous flux to be
By rotating the rotary plate so that the diaphragm blades narrow the light beam, the rotary plate is configured to be displaced in the optical axis direction of the light beam and contact the case member. The contact surface between the rotary plate and the case member when contacting the case member is an inclined surface with respect to the optical axis direction, so that the rotary plate can contact the case member when the rotary plate contacts the case member. An apparatus for adjusting light quantity, characterized in that a center of rotation of a plate coincides with a center of the light beam. 前記ケース部材には穴部が形成されるとともに、前記ロータリープレートには前記ケース部材と当接する際に前記穴部に、当接するリブ部が形成され、前記穴部の前記リブ部との当接面および前記リブ部の前記穴部との当接面の少なくともどちらか一方を傾斜した面とすることを特徴とする請求項１に記載の光量調節装置。   The case member is formed with a hole portion, and the rotary plate is formed with a rib portion that comes into contact with the hole portion when contacting the case member, and the hole portion is in contact with the rib portion. The light quantity adjusting device according to claim 1, wherein at least one of the surface and the contact surface of the rib portion with the hole portion is an inclined surface. 前記絞り羽根には突起部が形成されるとともに、前記カムプレートには前記突起部が当接する傾斜面部が形成され、前記傾斜面部は前記絞り羽根が前記光束を絞るほど徐々に高さが高くなるように形成されていることを特徴とする請求項１または２に記載の光量調節装置。   The diaphragm blade is formed with a protrusion, and the cam plate is formed with an inclined surface portion with which the protrusion is in contact, and the inclined surface portion gradually increases in height as the diaphragm blade narrows the light flux. The light amount adjusting device according to claim 1, wherein the light amount adjusting device is formed as described above.
JP2007184602A 2007-07-13 2007-07-13 Light control device Expired - Fee Related JP5173293B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007184602A JP5173293B2 (en) 2007-07-13 2007-07-13 Light control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007184602A JP5173293B2 (en) 2007-07-13 2007-07-13 Light control device

Publications (3)

Publication Number Publication Date
JP2009020438A JP2009020438A (en) 2009-01-29
JP2009020438A5 true JP2009020438A5 (en) 2010-08-19
JP5173293B2 JP5173293B2 (en) 2013-04-03

Family

ID=40360097

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007184602A Expired - Fee Related JP5173293B2 (en) 2007-07-13 2007-07-13 Light control device

Country Status (1)

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JP (1) JP5173293B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8976435B2 (en) 2010-11-18 2015-03-10 Nisca Corporation Light quantity adjustment apparatus and image pickup apparatus
US8654455B2 (en) 2011-05-10 2014-02-18 Nisca Corporation Light quantity adjustment apparatus, lens unit and optical apparatus provided with the same
CN109116535A (en) * 2018-10-23 2019-01-01 温氏食品集团股份有限公司 A kind of shade and shading control system of fluorescence microscope

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603821U (en) * 1983-06-20 1985-01-12 株式会社ニコン Photographic lens aperture device
JPS6232266Y2 (en) * 1985-01-18 1987-08-18
JPH087362B2 (en) * 1987-11-04 1996-01-29 キヤノン電子株式会社 Diaphragm device
JPH0413931U (en) * 1990-05-23 1992-02-04
JPH04133038A (en) * 1990-09-25 1992-05-07 Olympus Optical Co Ltd Shutter used also as diaphragm for camera
JPH0792524A (en) * 1993-09-24 1995-04-07 Fuji Photo Optical Co Ltd Diaphragm device
JP3671491B2 (en) * 1996-01-09 2005-07-13 フジノン株式会社 Camera iris mechanism
JP3733177B2 (en) * 1996-07-02 2006-01-11 キヤノン株式会社 Rotation drive device and optical apparatus provided with the rotation drive device
JP4261701B2 (en) * 1999-09-16 2009-04-30 セイコープレシジョン株式会社 Aperture device
JP2002199693A (en) * 2000-12-26 2002-07-12 Canon Inc Electro-magnetic drive motor, electro-magnetic operation device, light quantity regulating device and optical equipment

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