Diaphragm device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 10, 1989
Grant Date -
N/A
app pub date -
Jun 26, 1986
filing date -
Jun 28, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A diaphragm device including a pair of diaphragm blades movable in opposite directions relatively to each other along a moving line passing through an optical axis of an optical system characterized in that each of the diaphragm blades is provided with an opening of a shape consisting of combination of an arc having a center of curvature located on said moving line and at least one arc having a radius smaller than the above-mentioned arc and having a center of curvature located on said moving line or on a line at right angle to said moving line.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully