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Optimization design method of carbon nanotube light shield

An optimized design and carbon nanotube technology, applied in optics, computing, optical components, etc., can solve problems such as heavy stray light intensity, ignore stray light distribution uniformity, etc., to improve analysis efficiency, improve stray light suppression ability, solve Effects with less degrees of freedom

Active Publication Date: 2016-08-17
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, the present invention provides a method for optimizing the design of a carbon nanotube light shield, which solves the design problem of a light shield based on a carbon nanotube high-absorption rate coating, and can Optimize and evaluate the stray light suppression characteristics under various working conditions, which solves the problem that the current design method focuses on the intensity of stray light while ignoring the uniformity of stray light distribution

Method used

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  • Optimization design method of carbon nanotube light shield
  • Optimization design method of carbon nanotube light shield
  • Optimization design method of carbon nanotube light shield

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Embodiment Construction

[0036] Such as Figure 4 Shown, a kind of optimal design method of carbon nanotube shading cover, comprises steps as follows:

[0037] Step 1, such as figure 2 As shown, according to the optical system 2 (such as figure 1 As shown), the diameter of the entrance pupil, the angle of view, the focal length and the suppression angle of the light hood determine the length and diameter of the light hood 1 and the positions of the cutting edges of each light-blocking ring, so that the primary scattered light cannot directly enter the interior of the optical system 2; the light hood 1 length L, diameter d 1It can be determined by the following formula:

[0038] L = d tanω 1 - t a n ω + L 1

[0039] d 1 ...

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Abstract

The invention discloses an optimization design method of a carbon nanotube light shield. The method comprises the following steps: 1, determining a length and a diameter of the light shield (1) and a cutting edge position of each light shielding ring; 2, determining values of weight coefficients w1 and w2; 3, establishing an optimization object function TWij; 4, obtaining TWij through calculation, if TWij is greater than epsilon and epsilon is an object value, going to the fifth step, and if the TWij is smaller than and equal to epsilon, obtaining alpha<1j>, alpha<2j>, ..., alpha<ij>, ..., and alpha<nj> and going to the seventh step; 5, calculating and ordering energy D1, D2, ..., Dn, which goes into an optical system (2), of optical energy diffused by each light shielding ring; 6, adjusting an included angle alpha<ij> between a light shielding ring corresponding to a maximum value among D1, D2, ..., Dn and an optical axis, and returning to the third step; and 7, according to a final value of an included angle between each light shielding ring and the optical axis, obtaining a position of each light shielding ring. The designing problem of the light shield based on carbon nanometer high-absorptivity coating is solved, and the problems of too much emphasis on parasitic light intensity yet too little emphasis on parasitic light distribution uniformity in a conventional design method are solved.

Description

technical field [0001] The invention relates to an optimal design method of a shading cover. Background technique [0002] The star sensor takes the star as the measurement target, images the star on the photoelectric converter through the optical system, and sends the output signal to the data processing unit through A / D conversion. After the star point extraction and star map identification, the optical axis vector of the star sensor is determined at Pointing in the inertial coordinate system, through the installation matrix of the star sensor on the aircraft, starlight navigation system and ship, determine its three-axis attitude in the inertial coordinate system. The star sensor is generally composed of a hood, an optical system, a detector assembly and its circuit, a data processing circuit, a secondary power supply, software (system software, application software, and star catalog), a main structure, and a reference mirror. [0003] With the continuous improvement of ...

Claims

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Application Information

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IPC IPC(8): G02B27/00G03B11/00G06F17/50
CPCG02B27/0012G03B11/00G06F30/00
Inventor 梁士通郝云彩余成武梅志武张运方刘婧陈建峰
Owner BEIJING INST OF CONTROL ENG