Glasses for the correction of chromatic and thermal optical aberations for lenses transmitting in the near, mid, and far-infrared sprectrums
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 17, 2015
Grant Date -
Oct 24, 2013
app pub date -
Apr 20, 2012
filing date -
Apr 20, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to chalcogenide glass compositions for use in a lens system to balance thermal effects and chromatic effects and thereby provide an achromatic and athermal optical element that efficiently maintains achromatic performance across a broad temperature range. The glass composition is based on sulfur compounded with germanium, arsenic and/or gallium, and may further comprise halides of, for example, silver, zinc, or alkali metals. Alternatively, is based on selenium compounded with gallium, and preferably germanium, and contains chlorides and/or bromides of, for example, zinc, lead or alkali metals.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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