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Image space scanning optical system based on curved prism

A curved prism and optical system technology, applied in the field of image scanning optical system, can solve the problems of large size and complex structure, and achieve the effect of increasing the system field of view and improving the scanning field of view

Inactive Publication Date: 2021-03-16
哈尔滨新光光电科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] An object of the present invention is to solve the defects that the optical system in the prior art often has a complex structure and a large size when meeting the requirements of a large field of view and a large detection distance

Method used

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  • Image space scanning optical system based on curved prism
  • Image space scanning optical system based on curved prism
  • Image space scanning optical system based on curved prism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The structure diagram of this embodiment is as follows figure 1 As shown, the curved prism is right-angled and can bend the light path by 90°; and the curved prism is Keplerian type, such as figure 2 As shown, both the incident surface and the exit surface are convex. The system of this embodiment is set in the infrared seeker and used as an image square scanning system. By controlling the movement of the oscillating mirror, the light of different fields of view is transmitted into the imaging optical system, and finally focused on the image plane.

[0038] from figure 1 It can be seen from the figure that the most prominent effect of this embodiment is that it saves the space occupied by the image square scanning system and contributes to the miniaturization of the infrared seeker. If you don’t use a curved prism, you need to set up a telescope group to achieve parallel light input-parallel light output, and a mirror for refraction. In this example, the curved pris...

Embodiment 2

[0040] The difference between this embodiment and Embodiment 1 is that the curved prism is of Galilean type, the incident surface is convex, and the outgoing surface is concave, such as image 3 shown.

Embodiment 3

[0042] The difference between this embodiment and Embodiments 1 and 2 is that the curved prism is of Galilean type, the incident surface is concave, and the outgoing surface is convex, such as Figure 4 shown.

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Abstract

The invention relates to an image space scanning optical system based on a curved prism, which is used for solving the defects of complex structure and large size of an optical system in the prior artwhen the optical system meets the requirements of a large field of view and a large detection distance. The system comprises a telescopic structure, a swing mirror, an imaging optical lens group anda detector which are arranged along an optical path, wherein the telescopic structure is a curved prism; the curved prism can turn back the optical path, and light entering and exiting the curved prism is parallel light; and the swing mirror is used for realizing image space scanning through rotation, and imaging the detector through the imaging optical lens group. One application of the inventionis infrared imaging guidance.

Description

technical field [0001] The invention relates to the field of image-side scanning optical systems, in particular to an image-side scanning optical system based on a curved prism. Background technique [0002] The optical system is divided into scanning type and non-scanning type according to the scanning mechanism. Affected by aberrations and materials, non-scanning infrared optical systems generally cannot meet the requirements of large field of view and large detection distance at the same time. Systems that meet these two requirements are often complex in structure and large in size. Therefore, a new image-space scanning optical system is needed to solve the defects of the prior art. Contents of the invention [0003] An object of the present invention is to solve the defect that the optical system in the prior art often has a complex structure and a large size when meeting the requirements of a large field of view and a large detection distance. [0004] According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10G02B13/00G02B13/02
CPCG02B26/105G02B13/007G02B13/02
Inventor 杨克君宇太坤
Owner 哈尔滨新光光电科技股份有限公司
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