Sharp edge for thick coatings

Details Sharp edge for thick coatings Sharp edge for thick coatings

1987-12-01

1989-03-14

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250352, 2505051, G01J 506

Patent

active

048126535

ABSTRACT:
A sharp edged aperture for use with radiation sensing apparatus to permit radiation to pass through a relatively thick layer of radiation absorbing material with a minimum of reflection off the edges of the opening by utilizing a thin layer of radiation blocking material overlaying the layer of radiation absorbing material.

REFERENCES:
patent: 3227880 (1966-01-01), Wideroe

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