US 4,234,790 A · Photodetector heat stabilizer

Abstract

Temperature sensitive photodetectors are temperature stabilized by coupling the photocathode of a photodetector in heat exchange relationship to a heated casting which acts as a heat source for the photocathode. The photocathode is coupled to the casting by a metallic Z-shaped bracket positioned on an insulating block with one base of the Z being coupled to the photocathode and the other base being coupled to a metal box through a Mylar insulating spacer, the box being directly mounted on the casting. A printed circuit board associated with the photodetector is also mounted on the insulating block. The direct heat path from the heated casting through the Z-shaped bracket to the photocathode reduces the warm up time of the photodetector thereby more rapidly temperature stabilizing the photodetector.

Claims7

Dependent claims

A photodetector mounting structure for rapidly heating the photodetector to operating temperature comprising:

(a) a photodetector having a photocathode,
(b) a heat conductive casting,
(c) a block of insulating material on which said photodetector is mounted,
(d) a metallic strip positioned on said block of insulating material,
(e) said metallic strip having one end thereof coupled to said photocathode and the other end thereof coupled in heat conducting relationship with said casting, and
(f) electrical insulating means mounted between said casting and said metallic strip.

3 more elements

Dependencies are inferred from the claim text.

Photodetector heat stabilizer

Life of this patent

Photodetector heat stabilizer

Life of this patent

Abstract

Claims7