Design method of free-form surface reflector with robustness

Abstract

The invention provides a design method of a free-form surface reflector with robustness, and the method comprises the steps: carrying out the partitioning of a light source emergent range, guaranteeing the uniform distribution of all regions on a target surface in the design, and carrying out the superposition. The design method can effectively reduce the influence of the processing error and the inconsistent light source data on the irradiation output, and improves the robustness of the system. In addition, the first-order continuity of the free-form surface generatrix is reserved, the processing difficulty is almost not improved, and the robustness of the whole system is improved.

Description

technical field [0001] The invention relates to the technical field of non-imaging optics and lighting, in particular to the design technology of a free-form surface optical system, in particular to a design method of a robust free-form surface reflector. Background technique [0002] Compared with traditional optical components, free-form optical components have great application potential in the field of non-imaging optical systems and lighting technology because of their higher design freedom, because they can precisely control the direction of light and realize various conventional optical components. The irradiance output that the system is difficult to achieve has also gained more and more applications. [0003] The application of free-form surfaces to illumination optics enables a wide variety of irradiance outputs with tailored characteristics, but in routine applications, a uniform irradiance output is often desired. For the design of the free-form surface optical ...

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Problems solved by technology

The article "Chen Jiaqi, Gu Guochao. Using the mapping method to construct free-form surface mirrors [J]. Journal of Changchun University of Science and Technology, 2013, 36(6):1-5" provides a typical free-form surface optical system to achieve uniform irradiance output Design method, this design method assumes that the light source is a point light source, and the design calculation is based on the energy distribution of the light emitted by the light source, and the mapping relationship between the light emitted by the light source and the falling point of the target surface is determined according to the law of energy conservation. There is no other means of uniform light, if If the actual light emitted by the light source differs from the data used in the design, it is difficult to guarantee the radiation output effect, and the overall design is not robust

In addition, the disadvantage of this method lies in the processing of the free-form surface. Since the overall system lacks discrete and integral homogenization systems, a small change in the parameters of the free-form surface may cause a large change in the uniformity of the irradiated surface. Processing puts forward higher requirements

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