The semiconductor laser outputs light, so it can be used as an illumination source. Because the laser has good directionality, it shows that the beam angle is small, energy is concentrated, and there is still enough light intensity to travel farther, so it is very suitable for long-distance lighting. The ability to illuminate long-range targets is the most important feature of the IR Laser Illuminator.
The energy distribution of the semiconductor laser in the vertical section of the beam is non-uniform, Gaussian distribution, strong in the middle, gradually weakening to the edge, or distribution of bright and dark stripes. Therefore, the direct use of semiconductor lasers as an illumination source is not desirable (non-professional manufacturers of laser lamps on the market, and IR laser Illuminator in the cottage version have seen many problems, making engineering users have some negative impressions on laser infrared lamps).
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