Double-free-form-surface collimating lens design method and double-free-form-surface collimating lens

Abstract

The embodiment of the invention provides a double-free-form-surface collimating lens design method and a double-free-form-surface collimating lens and relates to the technical field of optical lens. The double-free-form-surface collimating lens design method provided by the invention is based on a non-imaging optical theory and utilizes an energy conservation law and a Fresnel law, derivation of an iteration strategy of the double-free-form-surface collimating lens is completed, and the collimating lens is designed based on the iteration strategy. According to the design method, on the basis of original point light source design, edge light is adopted for design, so original model precision is greatly improved. In addition, double free surfaces are adopted for collimated light beam regulation and control, the regulation and control freedom degree is greatly improved, an existing equation solving thought is jumped out, the law of conservation of energy is combined, and numerical iteration solving of discrete points of the double free-form surfaces is carried out in an ingenious and novel energy mapping mode.

Description

technical field [0001] The invention relates to the technical field of optical lenses, in particular to a design method for a double free-form surface collimator lens and a double free-form surface collimator lens. Background technique [0002] Collimating lens is an indispensable basic optical component for the development of modern industry, national defense and science and technology, and its performance will directly affect the progress of the future new technological revolution. It can be widely used in lighting, imaging, data transmission and other fields, such as searchlights for long-distance lighting, 3D printing, medical special light sources, virtual reality, visible light communication, precision optical instruments, etc. [0003] With the development of science and technology, collimator lenses have experienced plano-convex lenses and aspheric lenses, and have now developed to the third generation of optical technology, free-form surface collimator lenses, but t...

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Problems solved by technology

[0003] With the development of science and technology, collimator lenses have experienced plano-convex lenses and aspheric lenses, and have now developed to the third generation of optical technology, free-form surface collimator lenses, but the mainstream design methods are still severely constrained by the existing foreign commercial optical simulations Software prevents sufficient innovation and development of domestic design methods

[0004] Compared with the traditional collimator lens, the free-form collimator lens has significant advantages in improving optical performance and efficiency, but it poses new challenges to its design method, mainly reflected in the design of the free-form collimator lens, in terms of design freedom, Compared with the traditional spherical lens or single free-form lens, it has greatly increased, making the establishment and solution of the algorithm model more complicated. At present, the mainstream design method still adopts the design method of point light source, and the complexity of algorithm design has been greatly improved. It is difficult to obtain a convergent numerical solution, while making the established model less accurate

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