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Optical axis extraction method of infrared low-temperature camera

A low temperature, camera technology, applied in the optical field, can solve the problem that the line of sight cannot be drawn by traditional methods

Active Publication Date: 2014-12-17
北京航天创智科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical solution of the present invention is to provide a method for extracting the visual axis of the infrared cryogenic camera, which solves the problem that the visual axis of the infrared cryogenic camera cannot be extracted by the traditional method because the detector cannot work normally at room temperature

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  • Optical axis extraction method of infrared low-temperature camera
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  • Optical axis extraction method of infrared low-temperature camera

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Embodiment Construction

[0027] like Figure 1 to Figure 6 As shown, first introduce the required theodolite knowledge.

[0028] a. Establish the theodolite measurement coordinate system

[0029] The (0°, 90°) and (270°, 90°) directions of the theodolite are used as the +Y and +Z axes respectively to establish a right-handed orthogonal coordinate system, which is called the measurement coordinate system and is denoted as ∑ 0 . Coordinate system ∑ 0 The positive direction of the X-axis is vertically upward, and the positive direction of the Y-axis is the zero position of the theodolite. Assuming a certain direction P in the self-collimating space of the theodolite, the corresponding horizontal angle and vertical angle readings are H and V respectively, such as Figure 4 As shown, the space vector component of point P is in the measurement coordinate system Σ 0 Expressed as:

[0030] x=cosV

[0031] y=sinVcosH

[0032] z=-sinVsinH (1)

[0033] b. The relationship between the viewing axis and th...

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Abstract

The invention provides an optical axis extraction method of an infrared low-temperature camera, which comprises the following steps of: respectively extracting the optical axis of the camera and that of a low-temperature parallel optical tube to a first outer benchmark cubic prism and a second outer benchmark cubic prism by a theodolite, and extracting the optical axis of the infrared low-temperature camera to the direction of the optical axis of the low-temperature parallel optical tube according to the direction-cosine matrix relation of a coordinate system of the two cubic prisms. The method provided by the invention realizes the optical axis extraction of the infrared low-temperature camera, solves a problem that the infrared low-temperature camera is unable to extract the optical axis by a traditional method because a detector is unable to work normally at normal temperature.

Description

technical field [0001] The invention belongs to the field of optics, and relates to a method for extracting the visual axis of an infrared cryogenic camera. Background technique [0002] Infrared cryogenic camera lenses are usually installed and tested at room temperature, and the infrared detector is installed after the lens transmission, focal length and field of view meet the requirements. Infrared cryogenic camera complete machine transmission test needs to provide ultra-high vacuum and low temperature radiation environment, that is, it is completed in the low temperature vacuum experiment tank to simulate the deep space and the earth's limb background. [0003] The system transmission test of the infrared cryogenic camera needs to be completed with the help of a low-temperature collimator. The simulated target is placed at the focal plane of the low-temperature collimator, so that the radiation from the simulated target and the background is collimated by the low-temper...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/18G02B7/00G01C1/02
Inventor 邢辉焦文春李春雷穆生博
Owner 北京航天创智科技有限公司