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Patent Searching and Data


Title:
LIGHT INTENSITY ADJUSTMENT DEVICE AND OPTICAL INSTRUMENT INCLUDING LIGHT INTENSITY ADJUSTMENT DEVICE
Document Type and Number:
Japanese Patent JP2017015997
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a light intensity adjustment device that can reduce its size and increase the strength of light blocking blades.SOLUTION: A light intensity adjustment device comprises: a bottom board that has an opening formed therein to transmit light; a plurality of light blocking blades that are supported and guided by guide shafts provided on the bottom board to be movable reciprocatingly in parallel to the bottom board; and driving means that engages with the plurality of light blocking blades and rotates upon energization to a driving motor to cause at least two of the plurality of light blocking blades to move reciprocatingly in parallel to a direction opposite to each other. At least one of the light blocking blades includes a light transmitting part and a light blocking part.SELECTED DRAWING: Figure 1

Inventors:
KOMIYAKOKU HIRONORI
Application Number:
JP2015133956A
Publication Date:
January 19, 2017
Filing Date:
July 02, 2015
Export Citation:
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Assignee:
CANON DENSHI KK
International Classes:
G03B9/02; G03B9/14