Stray light suppression structure and method
By setting up stray light suppression structures in the optical system with partitions divided through the light-through aperture and coated with matte paint, the shortcomings of the existing optical system in suppressing stray light outside the field of view are solved, the barrier efficiency is improved and the equipment length is reduced , improving imaging quality.
CN119126277AInactive Publication Date: 2024-12-13CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Patent Information
- Application Number
- CN202411623476.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2024-12-13
- Estimated Expiration
- Not applicable · inactive patent
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Figure CN119126277A_ABST
Abstract
The invention relates to the technical field of optical engineering, in particular to a stray light suppression structure and method.The stray light suppression structure structurally and mainly comprises a front suppression structure and a rear suppression structure, the front suppression structure is located at the front end of an optical system and covers all light entering the system, and the rear suppression structure is located in the middle of a light path and covers all light entering the system; the front suppression structure and the rear suppression structure are the same in shape and arrangement, but the size of the front suppression structure is reduced in proportion to adapt to the clear aperture of the light path position where the rear suppression structure is located, and the surfaces of the front suppression structure and the rear suppression structure are both coated with extinction paint to prevent stray light from continuing to interfere with system imaging after reflection or scattering on the surfaces. According to the invention, through the design of partitioning the clear aperture by the partition plate, the passing angle of light can be more accurately controlled, stray light can be inhibited, and the imaging quality of an optical system and the quality in a light beam propagation process are enhanced.
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Citation Information
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