Liquid crystal box for infrared thermal imaging detector

Abstract

The invention relates to a liquid crystal box for an infrared thermal imaging detector. In the infrared thermal imaging detector based on a liquid crystal rotation effect, infrared absorption rate of liquid crystal per se is low and the liquid crystal is difficult to use as an infrared sensitive material. The liquid crystal box for the infrared thermal imaging detector comprises an upper substrate, a lower substrate, orientation layers, a liquid crystal layer and sealing rings, wherein the orientation layers are arranged at the inner sides of the substrates, the liquid crystal layer is sandwiched between the orientation layers, the upper substrate transmits infrared light and visible light, and another substrate transmits the visible light; the orientation layers are made of an infrared light and visible light transmitting polymer material, parallel grooves are respectively and uniformly formed at one side of each of the two orientation layers, which faces the liquid crystal layer, and are perpendicular to one another, and infrared absorption layers are plated on the orientation layers by using a thin film deposition manner, and are made of a material which has better absorption characteristic on middle and far infrared rays. By adopting the liquid crystal box, the infrared absorption rate of a thin film is improved, the transformation efficiency of infrared absorption is improved, and the sensitivity of infrared detection is improved.

Description

technical field [0001] The invention relates to a liquid crystal imaging detection device, in particular to a liquid crystal box used for an infrared thermal imaging detection device. Background technique [0002] The principle of most infrared imaging detection devices is based on electrical readout, that is, the incident infrared radiation signal is converted into an electrical signal output device through infrared sensitive materials. According to the energy conversion method, infrared detectors can be divided into two categories: thermal detectors and photon detectors: photon detectors are based on the photoelectric effect generated by the interaction between the incident photon flow and the detection material, and the specific performance is that the detector responds to the number of free carriers It is the most commonly used detector at present, but this kind of detector needs to work at low temperature, and must be equipped with expensive and cumbersome refrigeration...

AI Technical Summary

Problems solved by technology

Therefore, the problem existing in the prior art is that the infrared absorption efficiency of the liquid crystal cannot be effectively improved.

Images