A Design Method of Optical Thin Film System for Large-Aperture Curvature Radius Ratio Lens
A radius of curvature and optical thin film technology, which is applied in ion implantation plating, metal material coating process, coating, etc., can solve the difficulty in designing the optical thin film system of large-diameter curvature radius ratio lenses, poor uniformity of optical thin film thickness, Problems such as wide distribution range of incident light angles achieve the effects of easy implementation, simple execution, and improved spectral performance
Active Publication Date: 2018-05-25
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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[0005] The technical problem to be solved by the present invention is: to overcome the difficulties in the design of the optical film film system of the large-diameter curvature radius ratio lens due to the poor uniformity of the thickness of the optical film on the lens with the large-diameter curvature radius ratio and the wide distribution range of the incident light angle
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0024] In the present invention, firstly, the thickness distribution of the optical film on the lens with a large curvature radius ratio is determined through experiments or theoretical analysis. Secondly, according to the light incident angle distribution and spectral performance requirements at each position on the lens with a large radius of curvature ratio, the numerical calculation method is used to globally optimize the design of the optical thin film system. Furthermore, the poor uniformity of the thickness of the optical film on the lens with a large radius of curvature ratio and the wide range of light incident angle distribution are solved, which brings difficulties to the design of the optical film film system of the lens with a large radius of curvature ratio. Below in conjunction with embodiment the present invention is further des...
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The invention discloses a method for designing an optical film film system for a lens with a large curvature radius ratio lens. In order to optimize the performance of the optical system, it is necessary to prepare an optical film with good spectral performance consistency on the lens with a large curvature radius ratio. This requires global optimization of optical thin film film system design. In the present invention, firstly, the thickness distribution of the optical film on the lens with a large curvature radius ratio is determined through experiments or theoretical analysis. Secondly, according to the light incident angle and spectral performance requirements at each position on the large-aperture curvature radius ratio lens, the numerical calculation method is used to globally optimize the design of the optical thin film film system. Compared with the traditional design method of optical thin film film system, the present invention takes into account both the film thickness and light incident angle on the lens with large radius of curvature ratio, and is especially suitable for the optical film film system on lenses with large radius of curvature ratio of various sizes. design.
Description
technical field [0001] The invention relates to the field of design and preparation of optical thin film elements, in particular to an optical thin film film system design method for lenses with large curvature radius ratio. Background technique [0002] With the increasingly sophisticated design of the optical system, in order to meet the performance indicators of the optical system, more and more lenses with a large radius of curvature ratio are used in the optical system, and high-performance anti-reflection coatings need to be coated on the surface of the lens with a large radius of curvature ratio film, thereby improving the performance of the optical system. Usually, the residual reflection of the surface of the lens with a large radius of curvature will cause two serious consequences: first, the loss of light energy, which reduces the brightness of the image; Astigmatism, once the stray light reaches the image plane, the contrast of the image will be reduced, thus af...
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IPC IPC(8): C23C14/54
Inventor 郭春李斌成孔明东
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI