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Unobstructed full-sphere reflective collimator optical system

A collimated light pipe and optical system technology, applied in the field of optical systems, can solve the problems of high cost, difficult processing, assembly, small field of view, etc., and achieve the effect of reducing the difficulty of assembly, improving the field of view, and avoiding center occlusion

Pending Publication Date: 2019-08-23
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the technical problems of the off-axis reflective collimator in the technical background, such as difficult processing and assembly, high cost, and small field of view, the present invention proposes an unobstructed spherical reflective collimator optical system

Method used

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  • Unobstructed full-sphere reflective collimator optical system
  • Unobstructed full-sphere reflective collimator optical system
  • Unobstructed full-sphere reflective collimator optical system

Examples

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Effect test

Embodiment 1

[0078] According to the requirements, the designed collimator optical system needs to meet the focal length of 850mm, F# of 10, and field of view of 2.2°.

[0079] According to the above-mentioned various relational expressions, the present embodiment provides the specific design parameters of each optical device in the optical system: the aperture of the system aperture stop 1 is 85mm, the distance from the aperture stop 1 to the main reflector 2 is 1405mm, and the main reflector 2 The distance from the secondary reflector 3 is 820mm, the distance from the secondary reflector 3 to the third reflector 4 is 922.82mm, the distance from the third reflector 4 to the fourth reflector 5 is 964.37mm, and the distance from the fourth reflector 5 to the focal plane The distance of the components is 1114.37mm; the vertex curvature radii of the primary reflector 2, secondary reflector 3, third reflector 4, and fourth reflector 5 are: 1407.11mm, -1891.85mm, 3359.09mm, -2339.09mm respective...

Embodiment 2

[0081] According to the requirements, the designed collimator optical system needs to meet the focal length of 550mm, F# of 10, and field of view of 2.1°.

[0082] According to the above-mentioned various relational expressions, the present embodiment provides the specific design parameters of each optical device in the optical system: the aperture of the system aperture stop 1 is 55mm, the distance from the aperture stop 1 to the main reflector 2 is 707.66mm, and the main reflector 2 The distance from secondary reflector 3 is 562.1mm, the distance from secondary reflector 3 to third reflector 4 is 622.44mm, the distance from third reflector 4 to fourth reflector 5 is 648.96mm, and the distance from fourth reflector 5 to The distance of the focal plane assembly 6 is 702.92mm; the radii of curvature of the vertex of the primary reflector 2, the secondary reflector 3, the third reflector 4, and the fourth reflector 5 are: 937.67mm, -1265.71mm, 2255.29mm, -1515.04 mm; the inclina...

Embodiment 3

[0084] According to the requirements, the designed collimator optical system needs to meet the focal length of 1000mm, F# of 10, and field of view of 2.2°.

[0085] According to the above-mentioned various relational expressions, the present embodiment provides the specific design parameters of each optical device in the optical system: the aperture of the system aperture stop 1 is 100mm, the distance from the aperture stop 1 to the main reflector 2 is 1014mm, and the main reflector 2 The distance from the secondary reflector 3 is 1004mm, the distance from the secondary reflector 3 to the third reflector 4 is 1136.4mm, the distance from the third reflector 4 to the fourth reflector 5 is 1189.43mm, and the distance from the fourth reflector 5 to the focal plane The distance of the components is 1240.39mm; the vertex curvature radii of the primary reflector 2, secondary reflector 3, third reflector 4, and fourth reflector 5 are: 1732.7mm, -2293.53mm, 4048.93mm, -2686.07mm respect...

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Abstract

The invention discloses an unobstructed full-sphere reflective collimator optical system, so as to solve the technical problems of difficult processing and assembly, high price, small field of view and the like existing in the present off-axis reflective collimator. The system comprises an aperture stop, a primary mirror, a secondary mirror, a third mirror, a fourth mirror, and a focal plane assembly, wherein the primary mirror, the secondary mirror, the third mirror, and the fourth mirror are all obliquely placed; the primary mirror and the third mirror are rotationally symmetric convex spherical mirrors; the secondary mirror and the fourth mirror are rotationally symmetric concave spherical mirrors; the incident light is incident by the aperture stop and reflected by the primary mirror;the secondary mirror is placed on the reflected light path of the primary mirror; the third mirror is placed on the reflected light path of the secondary mirror; the fourth mirror is placed on the reflected light path of the third mirror; and the focal plane assembly is placed on the reflected light path of the fourth mirror.

Description

technical field [0001] The invention relates to the field of optical systems, in particular to an unobstructed spherical reflection collimator optical system. Background technique [0002] The collimator is an important tool for calibrating and adjusting optical instruments, and it is often used to simulate the parallel beam emitted by an infinitely distant target. At the same time, it is also an important part of optical metrology instruments. Focal plane components such as reticles, star point plates, and discrimination rate plates are placed on the focal plane of the collimator to detect and calibrate various parameters and performances of the optical system to be tested. . [0003] In many cases, it is necessary to ensure that the spectral range of the output beam of the collimator is as wide as possible, including ultraviolet to infrared, so as to meet the testing requirements of optical instruments in different working spectrum bands. [0004] Since the transmissive ...

Claims

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Application Information

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IPC IPC(8): G02B27/62G02B17/06
CPCG02B27/62G02B17/0647
Inventor 庞志海马臻丁蛟腾
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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