System for measuring electromagnetic radiation originating from

Details System for measuring electromagnetic radiation originating from System for measuring electromagnetic radiation originating from

1989-10-19

1990-05-22

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250351, 250352, G01J 104

Patent

active

049280120

ABSTRACT:
A system for measuring electromagnetic radiation originating from the hemhere corresponding to a solid angle of 2.pi. is provided wherein a highly sensitive low-inertia detector is disposed below a transmissive dome and wherein the chopped light detection method is utilized. There are provided above the transmissive dome two similarly or differently designed modulators which are in the shape of dome segments and which are fitted into each other. At least one of the modulators rotates about their common vertical axis or the modulators may both rotate about the common vertical axis, either at the same or a different speed in the same direction or in opposite directions.

REFERENCES:
patent: 2994053 (1961-07-01), De Waard
patent: 3097300 (1963-07-01), Warmser et al.
patent: 3563658 (1971-02-01), Dreyfus

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