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Large view field scanning infrared optical system comprising reflective spatial light modulator

A technology of spatial light modulator and infrared optical system, which is applied in the field of optical instruments, can solve the problems of small field of view and complex structure of the system, and achieve the effects of compact volume, high imaging quality and simple system structure

Inactive Publication Date: 2014-04-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of small field of view and complex structure of the system under the condition of an aspheric fairing, and propose a large field of view scanning infrared optical system containing a reflective spatial light modulator

Method used

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  • Large view field scanning infrared optical system comprising reflective spatial light modulator
  • Large view field scanning infrared optical system comprising reflective spatial light modulator
  • Large view field scanning infrared optical system comprising reflective spatial light modulator

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Example figure 1 As shown, the present invention will be mainly applied to infrared focal plane imaging with a large scanning field of view. It can be widely used in modern investigation, rescue and other fields.

[0024] Such as figure 1 As shown, a large-field-of-view scanning infrared optical system including a reflective spatial light modulator of the present invention includes a rotationally symmetrical aspheric fairing (1), a double quadric correction plate (2), and an achromatic rotating Ries Pair of prisms (3), dichroic prisms (4), reflective spatial light modulator (5), spherical optical lens group (6), spherical optical lens group (7), spherical optical lens group (8), protection window (9 ), the detector image plane (10); in the direction of light propagation, the components (1) to (6) are arranged in sequence, and after the light...

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Abstract

The invention relates to a large view field scanning infrared optical system comprising a reflective spatial light modulator, and belongs to the technical field of optical instruments. The system comprises a rotational symmetry aspheric surface fairing, an achromatic rotating Ray weasley prism pair, the reflective spatial light modulator, an optical imaging system and a detector image plane. The special aspheric surface fairing meeting the fluid dynamics is adopted for the system, and thus the fluid dynamic performance is good; the reflective spatial light modulator is adopted for performing phase compensation on residual aberration of the systems when different scanning view fields exist; a detected target is dynamically scanned and imaged through an optical wedge, an imaging optical system in a subsequent optical path is fixed, and a low-temperature coil and electronic equipment do not pass through a mechanical rotating device. The system meets the dynamic characteristics of mediums and is good in imaging quality, light in weight, short in length, simple in structure and capable of achieving + / -60-degree view field scanning and being widely applied to the fields of investigation, rescue and the like.

Description

technical field [0001] The invention belongs to the technical field of optical instruments, and relates to a large-field-of-view scanning infrared optical system including a reflection-type spatial light modulator, which is especially suitable for large-scanning field-of-view infrared focal plane imaging. Background technique [0002] Infrared imaging technology plays an increasingly prominent role in modern reconnaissance and rescue. The outer surface of the rotationally symmetric aspheric conformal fairing of the seeker has a pointed arch shape, which can not only meet the image quality requirements of the optical detection system, but also meet the low resistance requirements of fluid dynamics. However, when the optical system behind the fairing performs tracking and scanning imaging on a certain range of field of view, since the surface of the fairing participating in the imaging is aspheric, various aberrations are introduced into the subsequent optical system, which se...

Claims

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Application Information

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IPC IPC(8): G02B27/00
Inventor 常军宋大林冯萍
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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