Airborne photoelectric turret mirror local heating device

Abstract

The invention belongs to the field of photoelectric technology, and in particular relates to a local heating device for an airborne photoelectric turret reflector, which includes a reflector thermal control module, a mirror seat, and a heating film temperature measuring sensor. The mirror thermal control module is located inside the mirror base, and the heating film temperature sensor is in the hollow hole of the mirror base and bonded to the mirror thermal control module. The heating film, heat conduction pad, heat conduction sheet, and mirror body temperature measuring sensor of the present invention are located in the narrow space between the mirror and the mirror base, without additional increase in thickness and volume, and meet the miniaturization design requirements of the photoelectric turret; the heating film passes through the heat conduction The pad, the heat-conducting sheet and the reflector are connected, and the heat is transferred to the reflector through heat conduction. Due to the large connection area, the heat conduction pad and the heat conduction sheet have high thermal conductivity, so the contact thermal resistance is low and the heat transfer efficiency is high; the mirror base only plays the role of supporting the reflector and does not participate in heat conduction, so the hollow design of the mirror base can be carried out, which greatly Reduce the weight of the mirror base to meet the lightweight design requirements of the photoelectric turret.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to a local heating device for an airborne optoelectronic turret reflector. Background technique [0002] As the cruising altitude of the carrier aircraft increases and the voyage time prolongs, the operating temperature of the airborne photoelectric turret is getting lower and lower, and the temperature of its optical system itself is also reduced due to the long-term low temperature environment. Generally speaking, the optical system design and adjustment are in a normal temperature environment. When the temperature of the optical system itself decreases, its imaging effect will deteriorate. For catadioptric optical systems, the temperature level of the reflector has a great influence on the image quality, so heating measures should be taken to make the temperature of the reflector close to the design value when it is working. The traditional mirror heating de...

AI Technical Summary

Problems solved by technology

Compared with heat conduction, the efficiency of heat radiation is lower, and the required heating power is larger; since the device includes an inner radiator, an inner heat insulation pad, an inner multilayer heat insulation component, an inner layer temperature control circuit, an outer radiator, The external heat insulation pad, the external multi-layer heat insulation components, and the external temperature control circuit, a large number of components reduce the reliability and maintainability of the system, increase the difficulty of the process, and occupy a relatively large volume and weight

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