ANGLE FILTER COLD SHIELD
Assignee
Martin Marietta
Filed as: MARTIN MARIETTA CORPORATION
Filed
Sep 28, 1990
Granted
Jan 3, 1995
Location
Bethesda MD (defense contractors)
Abstract
An angle filter for restricting the range of light received by a detector functions as a "cold shield" in an infrared optical system. The angle filter either utilizes fiber optics or a thin film technology and reduces the size of an optical system operating in the infrared region while maintaining high system performance. The cold shield/exit pupil configuration of a traditional optical system is replaced by the angle filter.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 17, 1991
Rescinded
Mar 4, 1994
Duration
2 years, 10 months
Inventor
- 1ALVIN J. LEVY
Sensitive facility: Bethesda MD (defense contractors)
Record Details
- Patent number
- US 5378892
- Application
- 07589791
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
Martin MariettaMore from this assignee
DUAL INFRARED BAND OBJECTIVE LENS
Martin Marietta
HDI IMPEDANCE MATCHED MICROWAVE CIRCUIT ASSEMBLY
Martin Marietta
METHOD ANTENNA WINDOW FOR THE PREPARATION OF A HIGH PURITY ALUMINUM NITRIDE BY ORGANOMETALLIC PYROLYSIS
Martin Marietta
BORON NITRIDE-TOUGHENED SINGLE PHASE SILICON ALUMINUM OXYNITRIDE COMPOSITE, ARTICLE AND METHOD OF MAKING SAME
Martin Marietta
PIEZOELECTRIC CERAMIC MATERIAL INCLUDING PROCESSES FOR PREPARATION THEREOF AND APPLICATIONS THEREFOR
Martin Marietta
COMMAND OPTICS
Martin Marietta
Related by domain
AIRBORNE RADAR JAMMING SYSTEM
BOEING, COMPANY, THE
METHOD AND APPARATUS FOR THE DETECTION OF OBJECTS USING ELECTROMAGNETIC WAVE ATTENUATION PATTERNS
JG TECHNOLOGIES LLC
DUAL INFRARED BAND OBJECTIVE LENS
OPTICAL NIGHT VISION DEVICE WITH STANDARD LIGHT INTENSIFIER
THOMSON-CSF SEXTANT
MULTIPLE INFRARED MISSILE JAMMER
LOCKHEED SANDERS INC, A DELAWARE CORPORATION
BANDGAP RADIATION DETECTOR