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Cavity detector

A detector and cavity technology, which is applied in the field of aerospace remote sensing instruments, can solve the problems of uneven surface response of the photosensitive surface of the thermal detector, and the thermal detector cannot meet the detection performance required by the instrument, and achieves the effect of improving the detection sensitivity.

Inactive Publication Date: 2012-06-13
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, due to the uneven response of the photosensitive surface of the thermal detector
Moreover, the large optical field of view requires that the photosensitive surface has a larger diameter, with a diameter of about 5 mm or more. Thermal detectors cannot meet the detection performance required by the instrument on such a large-area photosensitive surface.

Method used

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  • Cavity detector
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Embodiment Construction

[0011] Development process: manufacturing cavity and thermal resistance mold; cavity and thermal resistance electroplating; cavity and thermal resistance stripping; cavity winding wire; cavity secondary silver plating; cavity spray black; cavity, thermal resistance and Heat sink welding; dual cavity, thermal resistance and heat sink assembly. Thus, the development process of the cavity-shaped detector is completed.

[0012] Cavity detector manufacturing process:

[0013] 1. Manufacture cavity and thermal resistance mold: Determine the shape and size of the cavity and thermal resistance according to the design calculation. Aluminum with a material grade of LY12 is used to make the mold.

[0014] 2. Cavity and thermal resistance electroplating: The cavity and thermal resistance mold are formed by electroplating, and the thickness of the electroplated silver layer is controlled by the length of time and the magnitude of the current during electroplating.

[0015] 3. Cavity, th...

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Abstract

The invention discloses a cavity detector, which comprises two fine silver cavity cones with shapes of columns and cones and with tails, heater strips wound on inclined taper surfaces of the silver cavity cones, high-sensitivity platinum temperature measuring wires wound on the columns of the silver cavity cones, special black paint sprayed on inner walls of the silver cavity cones with the tails, and a double-cavity detector composed of two column heat resistors for supporting the cavity cones, a copper heat sink, an aluminum heat sink and a primary connection frame. According to the double-cavity detector disclosed by the invention, the detection sensitivity of an apparatus can be greatly increased.

Description

technical field [0001] The invention relates to an aerospace remote sensing instrument, in particular to a cavity-shaped detector used for a radiation detection instrument with a wide band and a large field of view. Background technique [0002] In the ground remote sensing radiation detection instrument, for the wide-band (0.2-50 micron) detectors that can detect the reflected solar radiation from the earth and the earth's own radiation, theoretically, thermal detectors can realize broadband radiation detection. However, due to the inhomogeneous response of the photosensitive surface of the thermal detector itself. Moreover, the large optical field of view requires a larger diameter of the photosensitive surface, which is about 5 mm or more. The thermal detector cannot meet the detection performance required by the instrument on such a large photosensitive surface. For this purpose, a thermal radiation detector with a double-cavity structure is specially designed and devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/20G01J5/04
Inventor 郁蕴健张韬
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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