Blade drive device and optical device
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United States of America Patent
Stats
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Aug 28, 2012
Grant Date -
Jul 7, 2011
app pub date -
Mar 11, 2011
filing date -
Oct 14, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A blade drive device includes: a board including an optical path opening; first and second blades cooperatively defining an amount of light passing through the optical path opening to a given amount of light. The first blade includes a first opening. The second blade includes: a first cutout portion defining the amount of light in cooperation with the first opening; and a second cutout portion defining the amount of light in cooperation with the first opening. The second cutout portion overlaps the first blade when the first cutout portion and the first opening cooperatively define the amount of light.
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