Infrared focal plane detector component

Abstract

The invention discloses an infrared focal plane detector component. The infrared focal plane detector component comprises imaging optical parts, a cold shield and a dewar, wherein the imaging optical parts comprise an objective lens and a cold stop which are integrated in the interior of the dewar; the objective lens is arranged on the window of the dewar or bonded with the cold shield; the cold stop is arranged on the cold shield, and the cold shield and the window seat of the dewar are the support pieces of the imaging optical parts. The infrared focal plane detector component solves the problems of the low temperature, the miniaturization and the athermalization of an infrared optical system in the correlation technique, the infrared imaging optical parts are integrated in the detector dewar component and made to be in a constant low temperature environment, therefore the self-emitted radiation of the optical system can be effectively controlled, the adaptive capacity to environmental temperature variations is greatly improved, and the optical system is significantly superior to a conventional imaging system in volume and weight.

Description

technical field [0001] The invention relates to the field of photoelectric technology, in particular to an infrared focal plane detector assembly. Background technique [0002] The application fields of this patent are mainly infrared imaging systems for aerospace and infrared imaging systems carried on small platforms such as drones and missiles. [0003] Space is a high-vacuum, low-temperature environment of about 3K, and the target signal to be detected is very weak. In this case, the background radiation of the infrared optical system itself will seriously affect the sensitivity of the infrared imaging system. In order to reduce this thermal noise and play the role of the background limit detector, the optical system and its related components must be cooled to a certain extent. In order to effectively reduce the background photon flux. At the same time, reducing the temperature of the infrared optical system can also shield the thermal interference from outside the sy...

AI Technical Summary

Problems solved by technology

Under the conventional design concept, only complex athermalization methods can be used to correct and compensate

[0006] Aiming at the low temperature, miniaturization and athermalization problems of the mid-infrared optical system in the related technology, no effective solution has been proposed so far

Images