BLADE DRIVE DEVICE AND IMAGING APPARATUS

PROBLEM TO BE SOLVED: To provide a blade drive device and an imaging apparatus which can effectively suppress upward warpage of a blade group.SOLUTION: A blade drive device includes: a plurality of blades 3 annularly arranged around a light passing route (opening 11 of a ground plate 1, an opening 2...

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Bibliographic Details
Main Author SHIBATA MITSUO
Format Patent
LanguageEnglish
Japanese
Published 02.06.2016
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide a blade drive device and an imaging apparatus which can effectively suppress upward warpage of a blade group.SOLUTION: A blade drive device includes: a plurality of blades 3 annularly arranged around a light passing route (opening 11 of a ground plate 1, an opening 22 of a drive ring 2); and the drive ring 2 for rotating the plurality of blades 3. The plurality of blades 3 include engagement parts (operation shafts 31) for engaging with each of cam grooves 23 provided to the drive ring 2. At least a portion of each of the cam groove 23 is provided in a manner to slant toward the outside in a radial direction of the drive ring 2. The blade drive device may be included by an image apparatus.SELECTED DRAWING: Figure 1 【課題】羽根群の反り上がりを有効に低減できる羽根駆動装置及び撮像装置を提供する。【解決手段】光通過経路（地板１の開口部１１、駆動リング２の開口部２２）の周囲に環状に配置された複数の羽根３と、これら複数の羽根３を回動させる駆動リング２と、を備え、複数の羽根３のそれぞれは、駆動リング２に設けられたカム溝２３に係合する係合部（作動軸３１）を有し、カム溝２３の少なくとも一部は、駆動リング２の径方向外側に向かって傾斜して設けた。羽根駆動装置を撮像装置に備えてもよい。【選択図】図１
Bibliography:Application Number: JP20140239645