Focusing detector having a scanning grating used both as a beam splitter and spatial and frequency filter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 28, 1989
Grant Date -
N/A
app pub date -
Oct 22, 1986
filing date -
Oct 24, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A scanning grating for a focusing detector and a focusing detector are described. The scanning grating serves as an image scanner and spatial frequency filter and includes at least two surface elements splitting up an incident luminous flux into two spatially separate light fluxes and by means of which, in conjunction with a field lens, two images of the exit pupil, or parts thereof, of an associated optical system are generated in a plane in which at least two photo-receiver systems are mounted. Means acting optically as complementary plane-parallel plates are provided to split up the luminous flux from the optical system into two spatially separate light fluxes.
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