Achromatized and athermalized two-lens reimager
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 2, 1999
Grant Date -
N/A
app pub date -
Oct 14, 1997
filing date -
Oct 12, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reimager comprises precisely two positive lenses wherein the chromatic longitudinal aberration lies within the depth of focus and the thermal image position variation likewise lies within the depth of focus over a temperature range of more than .+-.30.degree. (in the embodiment from -40.degree. C. to +70.degree. C.). Aspheric and diffractive surfaces are utilized and, if required, are joined on respective lens surfaces (31, 51, 53, 71, 73).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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