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No-blocking pure reflection optical system

A technology of reflective optics and optical systems, used in optics, optical components, instruments, etc., can solve problems such as small field of view, and achieve the effect of small F-number, compact system, and few parts

Active Publication Date: 2016-02-17
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide an unobstructed pure reflective optical system to solve the problem of small field of view of traditional reflective systems

Method used

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] The unobstructed pure reflection optical system provided by the present invention adopts the eccentric triple-trans structure, such as figure 1 As shown, the optical system includes a primary mirror 1, a secondary mirror 2, an aperture stop 3, a triple mirror 4, and a detector focal plane 5 arranged sequentially along the optical path from the object side to the image side. The primary mirror 1, the secondary mirror 2, and the triple mirror The mirrors 4 are reflecting mirrors, wherein the primary mirror 1 is a concave parabolic mirror, and its surface shape is a concave paraboloid; the secondary mirror 2 is a convex hyperboloid mirror, and its surface shape is a convex hyperboloid; the third mirror 4 is a free-form surface mirror ; Its surface is a free-form surface. Through the eccentricity and inclination of the primary mirror 1, the light rays are...

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Abstract

The invention relates to a no-blocking pure reflection optical system. The system is of an eccentric three-mirror structure and comprises a primary mirror, a secondary mirror, an aperture diaphragm, a ternary mirror and a detector focal plane which are arranged along the optical path from the object space to the image space in sequence, wherein the primary mirror, the secondary mirror and the ternary mirror are all reflecting mirrors, the primary mirror is a concave-paraboloid mirror, the secondary mirror is a convex hyperboloidal mirror, and the ternary mirror is a free-form-surface mirror; light is reflected on the surface of the primary mirror, the surface of the secondary mirror and the surface of the ternary mirror in sequence and blocking is avoided, and light reflected by the three mirrors irradiates on the focal plane perpendicularly. The system has the advantages of being wide in wave band, large in visual field, small in distortion, small in F number, free of blocking, telecentric in image space, free of chromatic aberration or thermal aberration and the like and is suitable for high-resolution observation.

Description

technical field [0001] The invention relates to an unobstructed pure reflection optical system, in particular to an eccentric three-reflection optical system. Background technique [0002] Refractive optical systems are more suitable for applications with large field of view, low resolution requirements, short focal lengths, small apertures, and narrow wavelength bands. At present, the development trend of space optical systems at home and abroad is towards wide wavelength bands and long focal lengths. , large field of view, light weight, miniaturization, large relative aperture, and high imaging quality are developing, which makes people's demand for reflective system design increasing. Total reflection systems have several advantages over refractive systems: [0003] (1) There is no chromatic aberration in the total reflection system, and there is no secondary spectrum, so it can be used for imaging in a wide spectrum; [0004] (2) The aperture of the optical system can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/06
CPCG02B17/0642
Inventor 陈建发
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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