Large-field-of-view scanning infrared optical system with transmissive spatial light modulator

A technology of spatial light modulator and infrared optical system, 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 size, high imaging quality, and improved range of motion

Inactive Publication Date: 2011-11-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Large-field-of-view scanning infrared optical system with transmissive spatial light modulator
  • Large-field-of-view scanning infrared optical system with transmissive spatial light modulator
  • Large-field-of-view scanning infrared optical system with transmissive spatial light modulator

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] 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.

[0023] like figure 1 As shown, a large-field-of-view scanning infrared optical system containing a transmissive 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 Lens prism pair (3), transmissive spatial light modulator (4), spherical optical lens group (5), spherical optical lens group (6), spherical optical lens group (7), protective window (8), detector image plane (9); In the direction of light propagation, the above optical elements are sequentially arranged coaxially in sequence.

[0024] In the em...

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Abstract

The invention relates to a large-field scanning infrared optical system comprising a transmission-type spatial light modulator and belongs to the technical field of optical instruments. The system comprises a rotational symmetric aspherical dome, an achromatic rotational Risley prism pair, the transmission-type spatial light modulator, an optical imaging system and a detector image surface. The system adopts a special aspherical dome which accords with fluid dynamics and has excellent fluid dynamic performance, performs dynamic phase compensation on the residual aberration of the system during scanning of different fields by adopting the transmission-type spatial light modulator and performs dynamic imaging on a detected target by using an optical wedge. The optical imaging system in a subsequent light path keeps fixed, and a low-temperature coil and electronic equipment do not pass through a rotational mechanical device. The system meets the dynamic characteristics of a medium, is good in imaging quality, light in weight, small in length and simple in structure, can scan the fields at positive/negative 60 DEG and can be widely applied to the fields of investigation, rescuing 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 transmission-type spatial light modulator, which is particularly 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, whic...

Claims

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Application Information

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IPC IPC(8): G02B27/00G01J5/08
Inventor 常军彭晴晴宋大林曹娇
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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