Porous mask plate capable of being recognized by APS solar sensor

A solar sensor and mask technology, which is applied in the fields of instruments, optics, and photoengraving process of pattern surface, can solve the problems of unsuitable engineering application and complicated identification process, and achieves improvement of measurement accuracy, reduction of hardware resources, The effect of improving the data update rate
CN101726994BActive Publication Date: 2011-11-16BEIJING INST OF CONTROL ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INST OF CONTROL ENG
Publication Date
2011-11-16

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Abstract

The invention relates to a porous mask plate capable of being recognized by an APS solar sensor, which comprises a glass substrate and a film coating layer, wherein a film is coated on the lower surface of the glass substrate; at least 3 imaging pinholes are optically etched on the film coating surface of the glass substrate; the difference of the distance in at least one of the x direction and the y direction between any two imaging pinholes is not less than 20 pixels; and the side length of the square zone boundary of the imaging pinholes does not exceed d=L-2htan alpha (unit: mm), wherein L is the side length of the effective image plane of an image sensor in the APS solar sensor, h is the distance between the mask plate and the image plane of the image sensor, and alpha is the angle of field of the APS solar sensor. By adopting independent characteristics between holes in the porous array, the invention can quickly recognize contaminated pinholes, ensures high data updating rate of products, and is suitable for engineering application.
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Description

technical field

[0001] The invention belongs to the field of optical imaging attitude sensors, and is especially suitable for identifiable porous mask plates of solar sensors. Background technique

[0002] With the rapid advancement of imaging detection devices and processor technology, solar sensors for spacecraft are gradually developing from encoded and analog to imaging. APS solar sensors are a large field of view that is different from traditional encoded solar sensors. , High-precision imaging sun sensor.

[0003] The identifiable porous mask is an APS imaging sun sensor light introducer, and its main function is to image the sun on the surface of the photosensitive device. During the landing phase of the lunar rover and the movement of the lunar surface, moon dust poses a great threat to the normal operation of the optical sensor. The identifiable porous mask will mask the The diaphragm is divided into several specific areas, so that the APS imaging solar sensor can...

Claims

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