In this paper, we discuss six theorems of the stability on minimal focal surface.
本文给出了伪球率线汇极小焦面稳定性的六个定理。
A method is introduced for testing stray light coefficient, vignetting coefficient and image surface uniformity optical system with large aperture and long focal length.
叙述一种用于测试大口径、长焦距光学系统杂光系数、渐晕系数、像面照度均匀性等光学参数的检测方法。
It has an aluminized surface that reflects starlight to form an image at the focal plane.
表面镀铝膜，将星光反射到焦平面上成像。
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