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Flyback optical system and method for eliminating image blurring

An optical system and image technology, applied in the field of optical scanning systems, can solve the problems that the linear array detector cannot be used for tracking, the image is blurred, and the image changes greatly, and the effect of eliminating image blurring and eliminating image blurring can be achieved.

Active Publication Date: 2014-02-12
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS +1
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  • Abstract
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  • Application Information

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Problems solved by technology

Infrared line detectors are disadvantageous in some respects: during one scan period, the image of the line detector containing a specific target only appears in the next scan, and the position of the target may change greatly during the frame period of the line detector ;Line detectors cannot be used for tracking while searching
When there is no space search and tracking for infrared area detectors, a set of methods is proposed to solve the image blurring caused by two-dimensional scanning mirror scanning

Method used

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  • Flyback optical system and method for eliminating image blurring
  • Flyback optical system and method for eliminating image blurring

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Embodiment Construction

[0016] A flyback optical system that eliminates image blur, such as figure 1 As shown, it includes: a two-dimensional scanning mirror 1, a telescope system composed of a first lens 2 and a second lens 3, a flyback mirror 4, a rear optical system 5, and the like. in:

[0017] The two-dimensional rotation axis of described two-dimensional scanning mirror 1 is respectively x-axis and y-axis, and wherein x-axis is the optical axis of this optical system, and the optical axis of telescopic system, retrace mirror 4 and back optical system 5 and x axis coincident.

[0018] Both the two-dimensional scanning mirror 1 and the retrace mirror 4 are connected to a servo motor, and rotate under the control of the servo motor.

[0019] The parallel light beam from the airspace target is reflected by the two-dimensional scanning mirror 1 to the first lens 2 and the second lens 3 of the telescope system, then reflected by the flyback mirror 4, and finally imaged on the surface of the rear op...

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Abstract

The invention discloses a flyback optical system and method for eliminating image blurring. The system comprises a two-dimensional scanning reflector, a telescope system, a flyback reflector and a rear optical system; optical axes of the telescope system, the flyback reflector and the rear optical system are coincident with an optical axis x of the optical system; the two-dimensional scanning reflector and the flyback reflector are both connected with a servo motor. The flyback optical system provided by the invention has the advantages that the flyback reflector is controlled to rotate around an image rotating shaft so as to compensate the image rotation quantity caused at a flyback mechanism in the scanning of the two-dimensional scanning reflector; the reverse scanning is performed by rotating the flyback reflector around a flyback shaft to eliminate the influence of the image blurring. The flyback optical system can eliminate the image blurring caused by the two-dimensional scanning reflector, and is suitable for the aviation and military fields.

Description

technical field [0001] The invention relates to an optical scanning system, in particular to a flyback optical system and method for eliminating image blur. Background technique [0002] In the field of aerospace and military, infrared detection equipment for target search and tracking mainly uses optical-mechanical scanning devices for airspace search, combined with infrared line array detectors for target search and tracking. Infrared line detectors are disadvantageous in some respects: during one scan period, the image of the line detector containing a specific target only appears in the next scan, and the position of the target may change greatly during the frame period of the line detector ; Line detectors cannot be used for tracking while searching. These deficiencies can be replaced by infrared area detectors. [0003] When the working mode of the area array detector is adopted, and the two-dimensional scanning mirror is used for continuous scanning imaging, there w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10
Inventor 李远
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS