TECHNIQUE FOR ELIMINATING UNDESIRABLE REFLECTIONS FROM OPTICAL SYSTEMS
Assignee
ARMY, SECRETARY OF, UNITED STATES OF AMERICA, THE.
Filed
Nov 20, 1975
Granted
May 13, 1997
Location
MD US
Abstract
Undesirable reflections from an element in an optical system are eliminatedy passing incoming light through a polarizer and a 45° optical rotator before it strikes the reflective element. The reflected light component is again rotated 45° by the rotator, for a total rotation of 90°, whereupon it is blocked from leaving the system by the polarizer. Alternatively, a quarter wave plate or other circular polarizing component may replace the rotator to result in a net rotation of the polarization of the reflected light by 90°.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Nov 3, 1981
Rescinded
Mar 14, 1994
Duration
12 years, 4 months
Inventor
- 1THOMAS J. GLEASON
Record Details
- Patent number
- US 5629492
- Application
- 00563471
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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