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

A curved lens and light control technology, which is applied in the field of applied optics, can solve the problems of light beam control and complexity of uniform light system, and achieve the effect of limiting effect, good uniformity and easy processing
CN102679265BActive Publication Date: 2014-04-09INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Publication Date
2014-04-09

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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.
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Description

Technical field

[0001] The invention relates to the technical field of applied optics, in particular to a method for realizing uniform light beam control by using a free-form surface lens. Background technique

[0002] At present, most light source generating devices emit light sources that are non-uniform. For example, the light output by the laser meets the Gaussian distribution, and the light output by the LED meets the Lambertian distribution. However, in many cases, a light source with better uniformity is required, or The light emitted by the light source is controlled in a required specific shape area, which requires uniform light control of the light source to meet actual needs.

[0003] There are several methods currently applied to 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 this array, the emitted ...

Claims

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