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High-performance visible-light long-focal-length lens

A technology with visible light and long focal length, applied in optics, optical components, instruments, etc., can solve the problems of difficult to meet the requirements of spectral width, poor aspheric surface manufacturability, low cost performance, etc., to reduce the influence of chromatic aberration, good manufacturability, and improve imaging quality effect

Active Publication Date: 2018-07-27
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the former is complex, and the spectral width is difficult to meet the requirements; the latter is not cost-effective due to the poor processability of the aspheric surface

Method used

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  • High-performance visible-light long-focal-length lens
  • High-performance visible-light long-focal-length lens
  • High-performance visible-light long-focal-length lens

Examples

Experimental program
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Embodiment Construction

[0033] Such as figure 1 The 530mm high-performance long-focus lens optical system shown adopts 6 groups of 8-element catadioptric structure, including the first front fixed group 1, the second front fixed group 2, the primary reflector 3, the secondary reflector 4, and the aperture stop 8. The first post-fixation group 5 and the second post-fixation group 6;

[0034] The first front fixing group 1, the second front fixing group 2 and the main reflector 3 are sequentially arranged along the direction of the outgoing visible light beam;

[0035] The secondary reflector 4, the first rear fixed group 5, and the second rear fixed group 6 are arranged between the second front fixed group 2 and the main reflector 3, and the secondary reflector 4, the first rear fixed group 5, the second rear The fixed group 6 is set in sequence; the aperture stop 8 is set at the front end of the outer edge of the mirror surface of the secondary reflector 4;

[0036] The first front fixed group 1 is...

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Abstract

The invention relates to a high-performance visible-light long-focal-length lens. The lens has the advantages of compact structure, high performance cost ratio, good imaging quality and the like. Theactual use requirement can be met. The lens comprises a first front fixing set, a second front fixing set, a main reflection mirror, a secondary reflection mirror, an aperture diaphragm, a first rearfixing set and a second rear fixing set; the first front fixing set, the second front fixing set and the main reflection mirror are arranged in the direction of light beams of emitted visible light insequence; the secondary reflection mirror, the first rear fixing set and the second rear fixing set are arranged between the second front fixing set and the main reflection mirror in sequence; the aperture diaphragm is arranged at the most front end of the outer edge of the mirror surface of the secondary reflection mirror.

Description

technical field [0001] The invention belongs to the field of optical equipment and relates to a high-performance visible light telephoto lens. Background technique [0002] High-performance visible light long focal length lens has a wide range of applications in the fields of measurement and control, frontier defense and national defense. In addition to good imaging quality, the main requirements for its optical performance include: large relative aperture (D / f′: better than 1 / 2), wide spectrum (matching with detector spectrum: 0.45 μm ~ 0.9 μm), large field of view ( Full-frame: photosensitive surface 36mm×24mm), wide operating temperature range (-40°C ~ 50°C), low distortion (maximum distortion below 0.05%), and also requires compact appearance and high cost performance. [0003] At present, the methods for realizing the long focal length lens include a refractive structure or a catadioptric structure using an aspheric surface. The structure of the former is complex, and...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/005G02B13/0065
Inventor 李刚高昕李哲
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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