Thomas G Conway

US Patent:

50771019, Dec 31, 1991

Filed:

Sep 1, 1989

Appl. No.:

7/401692

Inventors:

Thomas G. Conway - Woodbridge VA
Robin-Lynn G. McClean - Warrenton VA
Grayson W. Walker - Alexandria VA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

F41H 300

US Classification:

428 17

Abstract:

A three-color camouflage system comprises layers of camouflage material hng low, intermediate and high thermal emissivities in the infrared spectral range, and appearing black, green and brown in the visible spectral range. The camouflage surface is structured in such manner that there is color adaptation to the natural background in the visible spectral range, as well as adaptation to the natural background in thermal emissivity in the infrared spectral range so that targets cannot be recognized with infrared sensing devices. Thermal emissivity in the infrared spectral range is controlled by superimposing layers of intermediate and high emissivity onto a basic low emissivity camouflage layer and providing perforations in these layers allowing the low-emissivity layer to be seen. High-emissivity areas are provided by perforations allowing the high-emissivity surface of the object being camouflaged to be seen. Alternatively, spots of high emissivity are superimposed on the three camouflage layers to provide areas of high emissivity.

US Patent:

48848964, Dec 5, 1989

Filed:

Jan 13, 1989

Appl. No.:

7/296569

Inventors:

Thomas G. Conway - Woodbridge VA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G01J 510
G01N 2500

US Classification:

374 9

Abstract:

The emissivity of camouflage material is determined from the apparent body emperature measured by a radiometer, calibrated to indicate a temperature of a blackbody would emit corresponding to the radiation received therefrom; and the true temperature of the material and the true temperature at an infrared detector of the radiometer of a radiometer. Computation means is provided for calculating emissivity from the so measured temperatures and for displaying the result.