Research/Patents/US 4941029
US 4941029Tier 3 — General Defense

HIGH RESISTANCE OPTICAL SHIELD FOR VISIBLE SENSORS

Assignee

Westinghouse

Filed as: WESTINGHOUSE ELECTRIC CORPORATION

Filed

Feb 27, 1985

Granted

Jul 10, 1990

Location

SILVER SPRING MD US

Abstract

An improved light shield for selectively shielding selected light sensitive elements in a visible sensor semiconductor device from incident light comprising a layer of high resistance semiconductor material carried upon the surface of the semiconductor substrate. The high resistance semiconductor material is selected to have a band gap narrower than the silicon semiconductor material it is shielding in order to substantially absorb light which would otherwise fall upon the shielded photosensitive elements.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Nov 8, 1985

Rescinded

Feb 21, 1990

Duration

4 years, 3 months

Inventor

  • 1NATHAN BLUZER

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records