Ceramic shell for laser detector, laser detector and preparation method

Abstract

The invention provides a ceramic shell for a laser detector, the laser detector and a preparation method of the ceramic shell, and belongs to the technical field of ceramic packaging. The ceramic shell comprises a ceramic base and a flange plate, and the ceramic base is provided with a packaging cavity; the flange plate is arranged on the ceramic base, and the outer edge of the flange plate protrudes out of the outer edge of the ceramic base; and the protruding outer edge of the flange plate is provided with a connecting part used for installation and fixation. According to the ceramic shell for the laser detector provided by the invention, the size of the flange plate is increased, and the connecting part used for fixed installation after packaging is arranged on the outer edge of the flange plate, so that the packaged device can be conveniently installed on a loading platform, and the requirement on the loading platform is reduced. According to the invention, the matching problem of the large-size metal component and the ceramic and the problems of residual stress and welding deformation compensation after high-temperature welding can be solved, good matching of the large-size metal component and the ceramic of a large cavity is achieved, the spatial resolution of a device and the imaging effect of an imaging system are guaranteed, and the reliability of signal transmission is improved.

Description

technical field [0001] The invention belongs to the technical field of ceramic packaging, and more specifically relates to a ceramic casing for a laser detector, a preparation method of the laser detector and the ceramic casing. Background technique [0002] Large-scale laser detectors are widely used in aviation and aerospace remote sensing imaging, and play an important role in the fields of environmental monitoring, resource census, topographic mapping and military reconnaissance. With the development of remote sensing application technology, people put forward higher and higher requirements for the integration degree of imaging chip and the scale of area array. However, the lead-out form of traditional metal packaged devices can only be drawn out through four sides or two sides. Such a package form determines the increase in the number of lead-out terminals, which greatly expands the package size of the metal case. [0003] As the volume, quality and cost of optical ima...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a ceramic shell for laser detectors, aiming to solve the problem of inconvenient connection and higher requirements for the loading platform of the ceramic shell with a conventional small sealing ring

[0006] The preparation method of the ceramic casing for laser detectors provided by the present invention aims to solve the problem of poor matching between large-sized metal components and large-cavity ceramic casings, resulting in poor device reliability

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