Method for realizing homogenized control of light beam by utilizing free-form curved lens

Abstract

The invention discloses a method for realizing homogenized control of a light beam by utilizing a free-form curved lens, and the method comprises the following steps of step 1, determining a light distribution form of a light source needing the homogenized control; step 2, determining position information of an area realizing the homogenized control; step 3, determining a lens material; step 4, dividing the homogenized controlled area into a plurality of subareas on the basis of energy conversation law; step 5, establishing a one-one correspondence relation between any subarea in step 4 and a light source emergent angle; and step 6, solving a surface shape of the free-form curved lens according to the refraction law and the correspondence relation in steps 4 and 5. Due to the adoption of the method, the light beam homogenized control of any light source is realized, and the light beam presents uniform light spots in any shape after passing through the curved lens.

Description

technical field [0001] The invention relates to the technical field of applied optics, in particular to a method for realizing beam uniformity control by using a free-form surface lens. Background technique [0002] At present, the light sources emitted by most light source generating devices are non-uniform. For example, the light output by a laser satisfies a Gaussian distribution, and the light output by an LED satisfies a Lambertian distribution. However, a light source with better uniformity is required in many occasions, or a The light emitted by the light source is controlled in a required specific shape area, which requires uniform light control on the light source to meet the actual needs. [0003] At present, there are the following methods for uniform light control: (1) microlens uniform light array. This method is mainly composed of a series of orthogonally distributed tiny lenses with a specific surface shape to form an array. After the beam passes through the ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to overcome the complexity of the existing uniform light system and the problem that the light beam cannot be controlled, and to provide a new design method for uniform light control based on a free-form surface lens, which only uses one lens to realize Uniform light for any light source, light and make the exit spot any desired shape

Images