Title:
LIGHT QUANTITY ADJUSTMENT DEVICE AND IMAGING APPARATUS
Document Type and Number:
Japanese Patent JP2022017837
Kind Code:
A
Abstract:
To provide a small-sized light quantity adjustment device and an imaging apparatus.SOLUTION: A light quantity adjustment device comprises: at least two diaphragm blades 105, 106 that form a diaphragm aperture in cooperation and adjust the quantity of light; a lever member 103 that drives the diaphragm blades; and a holding member that has an opening through which light passes and movably holds the blade members. The first blade member 105 of the diaphragm blades is provided with a projection. The projection of the first blade member is engaged with a groove provided in the holding member. The second blade member 106 of the diaphragm blades is provided with a groove. The groove of the second blade member is engaged with a shaft provided on the holding member. The lever member is driven to change the diameter of the diaphragm aperture.SELECTED DRAWING: Figure 1
Inventors:
YOSHIZAWA TAKAHITO
Application Number:
JP2020120634A
Publication Date:
January 26, 2022
Filing Date:
July 14, 2020
Export Citation:
Assignee:
CANON DENSHI KK
International Classes:
G03B9/02; G02B7/02; H04N5/225; H04N5/238
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