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Light spot homogenization apparatus of illumination module group of semiconductor laser

A lighting module and laser technology, applied in the field of lighting, can solve the problems of low laser transmittance, large device volume, etc., and achieve the effect of clear image, small device volume and simple structure

Inactive Publication Date: 2015-09-30
Shandong Huaguang Optoelectronics Co. Ltd.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies in the prior art, the present invention provides a light spot homogenization device for a semiconductor laser lighting module, which solves the problems of excessive device volume and low laser transmittance in the existing laser spot homogenization methods on the market

Method used

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  • Light spot homogenization apparatus of illumination module group of semiconductor laser

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, a spot homogenization device of a semiconductor laser lighting module, a semiconductor laser 1, a microlens 2, an optical homogenization sheet 3 and a plano-convex lens 4 are sequentially arranged on the light-emitting optical path; the semiconductor laser 1, the microlens 2, and the optical homogenization The sheet 3 and the plano-convex lens 4 are located on the same horizontal straight line. There is a working distance of 10mm between the semiconductor laser 1 and the microlens 2, and a working distance of 12mm between the microlens 2 and the optical homogenizing sheet 3; the semiconductor laser 1 is an 808nm semiconductor laser, which is used for night vision Lighting supplementary light; the microlens 2 adopts a double-sided microlens array, and the double-sided microlens array is a lens in an array form, which is two groups of microlens arrays, that is, the first group of microlens arrays is equivalent to a microlens On one side, the secon...

Embodiment 2

[0028] The light spot homogenization device of a semiconductor laser lighting module as described in Embodiment 1, the difference is that,

[0029] There is a working distance of 20 mm between the semiconductor laser 1 and the microlens 2 , and a working distance of 20 mm between the microlens 2 and the optical homogenizing sheet 3 .

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Abstract

The invention relates to a light spot homogenization apparatus of an illumination module group of a semiconductor laser. A semiconductor laser, a micro lens, an optical homogenization plate, and a plano-convex lens are successively arranged at the same horizontal straight line. The semiconductor laser emits laser irradiating the micro lens; abd the laser passes through a dual-face micro lens array and is split into multiple beams of light by a first micro lens unit group in the micro lens, and then the light is overlapped mutually in a second group micro lens array to carry out light spot homogenization. Dual homogenization is carried out on the emitted light beams by the optical homogenization plate, so that an interference problem of the laser light beam when the beam passes through an array at a second layer can be solved and thus the energy of the laser light beam becomes uniform. The light beams after homogenization passes through the plano-convex lens. When the distance between the plano-convex lens and the optical homogenization plate is changed, the divergence angles of the emitted light beams can be adjusted; matching is carried out according to camera lens with different focal lengths; and application to different occasions can be realized.

Description

technical field [0001] The invention relates to a light spot homogenization device of a semiconductor laser lighting module, belonging to the technical field of lighting. Background technique [0002] After decades of development in the surveillance industry, due to market demand and technological progress, surveillance cameras have entered the high-definition era. High-definition cameras have good imaging quality during the day, but at night, due to the limited illumination distance of the infrared LED modules used with high-definition cameras on the market, the imaging quality and imaging distance of high-definition cameras are limited, which limits the performance of high-definition cameras at night. usage of. [0003] The photoelectric conversion efficiency of semiconductor lasers is above 60%, which is much higher than that of infrared LEDs. Its advantages such as low energy consumption, less heat accumulation in the device, long life, good collimation, and long lighti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09G02B27/48G03B15/05
CPCG02B27/0927G02B27/48G03B15/02
Inventor 史国柱李明于璨璨马崇彩李树强
Owner Shandong Huaguang Optoelectronics Co. Ltd.