JP2017207562A5 - - Google Patents

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Publication number
JP2017207562A5
JP2017207562A5 JP2016098344A JP2016098344A JP2017207562A5 JP 2017207562 A5 JP2017207562 A5 JP 2017207562A5 JP 2016098344 A JP2016098344 A JP 2016098344A JP 2016098344 A JP2016098344 A JP 2016098344A JP 2017207562 A5 JP2017207562 A5 JP 2017207562A5
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JP
Japan
Prior art keywords
aperture
light
drive pin
diaphragm
diaphragm blade
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JP2016098344A
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Japanese (ja)
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JP2017207562A (en
JP6722039B2 (en
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Priority to JP2016098344A priority Critical patent/JP6722039B2/en
Priority claimed from JP2016098344A external-priority patent/JP6722039B2/en
Publication of JP2017207562A publication Critical patent/JP2017207562A/en
Publication of JP2017207562A5 publication Critical patent/JP2017207562A5/ja
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Publication of JP6722039B2 publication Critical patent/JP6722039B2/en
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Claims (7)

光通過経路に出入りする複数の絞り羽根と、
前記絞り羽根を駆動する駆動リングと、
前記駆動リングを回転可能に保持し光通過開口を有する第一の保持部材および第二の保持部材と、を備え、
前記絞り羽根は、第一の駆動ピンと第二の駆動ピンを有し、
複数の前記絞り羽根は、前記光通過開口の周囲を回転しつつ、前記第一の駆動ピンを光通過開口に近づける方向に移動させ、前記第二の駆動ピンを光通過開口から遠ざける方向に移動させることで、前記絞り羽根を回転させ、絞り開口を形成させることを特徴とする光量調節装置。 A plurality of diaphragm blades entering and exiting the light passage path;
A drive ring for driving the diaphragm blade;
A first holding member and a second holding member rotatably holding the drive ring and having a light passing opening;
The diaphragm blade has a first drive pin and a second drive pin.
The plurality of diaphragm blades rotate the periphery of the light passage opening, move the first drive pin in a direction approaching the light passage opening, and move the second drive pin away from the light passage opening By rotating the diaphragm blade, the diaphragm aperture is formed. 前記第一の保持部材は、前記第一の駆動ピンの移動を案内するカム溝を有し、
前記第二の保持部材は、前記第二の駆動ピンの移動を案内するカム溝を有し、
前記駆動リングは光通過開口から離れる方向に向かうカム溝を有し、
前記駆動リングのカム溝から力を受けるとともに、保持部材のカム溝に案内され移動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 first holding member has a cam groove for guiding the movement of the first drive pin,
The second holding member has a cam groove for guiding the movement of the second drive pin.
The drive ring has a cam groove facing away from the light passage opening,
Together receive a force from the cam groove of the front SL drive ring, the light amount adjusting device according to claim 1, characterized in that movement is guided by the cam groove of the holding member. 前記絞り開口が、開放から小絞りに移行する過程において、前記絞り羽根の回転中心位置は、前記第一の駆動ピンと前記第二の駆動ピンとの間にあることを特徴とする請求項１に記載の光量調節装置。   The rotation center position of the diaphragm blade is located between the first drive pin and the second drive pin in the process of shifting the aperture from the open to the small aperture. Light quantity adjustment device. 前記絞り開口が、開放から小絞りに移行する過程において、前記絞り羽根の回転中心位置が変化することを特徴とする請求項１に記載の光量調節装置。   2. The light amount adjustment device according to claim 1, wherein a rotation center position of the diaphragm blade is changed in a process of shifting the aperture from an open state to a small aperture. 前記絞り開口が、開放から小絞りに移行する過程において、前記絞り羽根の先端部は、前記絞り羽根の回転により、光通過開口内にするとともに、先端部が光通過開口から外方向に移動することを特徴とする請求項１に記載の光量調節装置。   In the process of shifting the aperture from the open to the small aperture, the tip of the diaphragm blade is brought into the light passing aperture by the rotation of the diaphragm blade, and the tip is moved outward from the light passing aperture The light quantity adjustment device according to claim 1, 前記駆動リングは、前記絞り羽根と係合する係合部を有する超薄型シート状部材から形成されたことを特徴とする請求項１に記載の光量調節装置。   The light quantity adjustment device according to claim 1, wherein the drive ring is formed of an ultra thin sheet-like member having an engagement portion that engages with the aperture blade. 請求項１から６のいずれか１項に記載の光量調節装置を有することを特徴とする光学機器。   An optical apparatus comprising the light amount adjustment device according to any one of claims 1 to 6.
JP2016098344A 2016-05-17 2016-05-17 Blade drive device and imaging device Active JP6722039B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016098344A JP6722039B2 (en) 2016-05-17 2016-05-17 Blade drive device and imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016098344A JP6722039B2 (en) 2016-05-17 2016-05-17 Blade drive device and imaging device

Publications (3)

Publication Number Publication Date
JP2017207562A JP2017207562A (en) 2017-11-24
JP2017207562A5 true JP2017207562A5 (en) 2019-05-23
JP6722039B2 JP6722039B2 (en) 2020-07-15

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ID=60417219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016098344A Active JP6722039B2 (en) 2016-05-17 2016-05-17 Blade drive device and imaging device

Country Status (1)

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JP (1) JP6722039B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7245667B2 (en) * 2019-02-20 2023-03-24 キヤノン電子株式会社 Light amount adjusting device and optical equipment
JP2020134724A (en) * 2019-02-20 2020-08-31 キヤノン電子株式会社 Luminous power adjustment device and optical apparatus

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