THERMO-OPTICAL FAR INFRARED SYSTEM
Assignee
US Government
Filed as: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE ARMY
Filed
Jun 5, 1981
Granted
Sep 25, 1990
Location
ALEXANDRIA VA US
Abstract
An infrared detecting system with a unique detector. The detector consists of an infrared-radiation absorbing layer on one side of thin-film substrate. On the other side of the substrate is a light reflecting layer, with a transducing material on the reflecting layer having a temperature-dependent index of refraction. Infrared radiation falling on the absorbing layer causes a temperature rise in this layer, a consequent rise in temperature of the reflecting layer and the transducing material, and a resulting change in refractive index of the material and a corresponding change in reflectance of the transducing material-reflecting layer combination. A read laser beam directed onto the material is thus reflected in accordance with the infrared radiation on the detector. Alternately, the reflecting layer may be on the same side of the substrate as the absorbing layer. Also, an additional reflector may be used between the reflecting layer and the transducing material.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jul 13, 1984
Rescinded
May 30, 1990
Duration
5 years, 10 months
Inventor
- 1VINCENT T. BLY
Technology Domains
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Record Details
- Patent number
- US 4959546
- Application
- 06282615
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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