Performance correcting optical assembly for photographic lens for television
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 11, 1990
Grant Date -
N/A
app pub date -
Mar 28, 1989
filing date -
Mar 30, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A chromatic aberration correcting lens assembly arranged on the image side of a photographic lens which is used in combination with a prism of a predetermined thickness on the image side thereof to correct the chromatic aberrations of the entire system, is constructed in the form of an assembly of three lens elements made of at least two different materials and cemented together at their adjoining surfaces, each of the cemented surfaces being made concave toward the image side.
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