Laser beam homogenization device

A technology of laser beams and chemical devices, applied in optics, optical components, instruments, etc., can solve problems such as poor imaging effects, achieve low laser energy attenuation, less difficulty in realization, and improve the effect of uniform spot

Inactive Publication Date: 2012-12-12
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

[0002] In the existing laser night vision system, the imaging device is generally a CCD or CMOS device. If the laser irradiation spot is not uniform, the imaging effect will be relatively poor, and the existing laser homogenization technology has certain defects, so A new technology is needed for this system without loss of light

Method used

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  • Laser beam homogenization device

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Embodiment Construction

[0015] See figure 1 As shown, the present invention provides a laser beam homogenization device, including:

[0016] A laser 1; the laser 1 is a semiconductor laser, which functions as a light source to emit laser light.

[0017] A microlens array 2 consisting of a plurality of microlenses, the microlens array 2 is located on the light emitting path of the laser 1, wherein the microlens array 2 is 2 mm × 2 mm, and the spacing of each micro lens is 150 microns or 300 microns, the function of which is that when the light emitted by the laser 1 irradiates the micro lens array 2, a lot of light spots will be formed through the micro lens array 2, and each light spot is equivalent to a small light source. A small light source overlaps each other in the distance, so as to realize the uniformity of the light spot;

[0018] An emitting lens 3, wherein the emitting lens 3 is a convex lens with a focal length of 50mm. The emitting lens 3 is located behind the micro lens array 2 and on the li...

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Abstract

The invention discloses a laser beam homogenization device which comprises a laser, a microlens array and an emitting lens, wherein the microlens array comprises a plurality of microlenses, and is positioned on a light emitting path of the laser; and the emitting lens is arranged behind the microlens array and positioned on light emitting paths of the laser and the microlens array. According to the invention, laser beams can be uniformly emitted; and compared with the prior art, the laser beam homogenization device has the advantages that the spot uniformity is remarkably improved, laser energy attenuation is reduced, and the realizing difficulty is little.

Description

Technical field [0001] The present invention relates to a laser beam homogenization device, which is a laser light source that emits uniformly, especially a laser light source with uniform light intensity distribution in a two-dimensional light intensity distribution section. With this solution, it can pass through CCD and human in a two-dimensional plane. The eye can see an image with uniform light intensity distribution. Background technique [0002] In the existing laser night vision system, the imaging device is generally a CCD or CMOS device. If the laser spot is not uniform, the imaging effect will be relatively poor. However, the existing laser homogenization technology has certain defects, so There is a need for a new technology that fits the system without losing light. Summary of the invention [0003] The purpose of the patent of the present invention is to provide a laser beam homogenization device, which can overcome the disadvantages of the existing laser homogeniza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09
Inventor 曾华林何军李丽艳范松涛佟有万雷平顺周燕
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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