Patent
Super-shortened optic system lens hood
Mangzuo Shen,Liao Sheng,Ma Wenli +2 more
TLDR
In this paper, the authors proposed a utility model for an ultra-short optical system light shield, which can reduce one time scattering generated by visual field light ray which directly radiates a primary mirror, and reduce the constructional dimension of the light shield.Abstract:
The utility model relates to an ultra-short optical system light shield, which belongs to the improvement of a low temperature infrared optical system light shield. The utility model is characterized in that at least three radial blades are uniformly ranged and fixedly connected between the circumference of a main light shield and the circumference of a secondary light shield, the center of which is arranged behind a secondary mirror, in the radial direction. The utility model can reduce one time scattering generated by visual field light ray which directly radiates a primary mirror, doesn't influence the signal acceptance of an optical system and reduces the constructional dimension of the light shield, and besides, the utility model has the advantages of simple structure, light weight and strong applicability.read more
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Patent
Secondary mirror light shield used for space large aperture camera
Luo Shikui,Chen Fang,Cao Dongjing,Pan Ningxian,Gao Chao,Shi Jiaohong,Wu Jie,Zong Xiaoying,Zhang Jianguo +8 more
TL;DR: In this paper, a secondary mirror light shield is used for a space large aperture camera, which consists of a louver cover, a cone cover, and a bracket, which is used to shield interference beams between the main mirror and the secondary mirror of the camera.
Patent
Stray light eliminating assembly suitable for off-axis three-mirror type wide remote sensing camera
TL;DR: In this article, a stray light eliminating assembly is proposed for an off-axis three-mirror type wide-width remote sensing camera, which consists of a main light shield which is installed at a main mirror of an optical system and used for shielding non-imaging light; a secondary mirror light shield and a third lens hood which is arranged at the third lens of the optical system, and is used forblocking incident light from directly irradiating and blocking the light scattered by the main lens hood and the secondary lens hood from entering the surface of the third lenses.