| 摘要 |
The present invention relates to an automatic focusing apparatus using a plurality of laser light sources for outputting laser light of different wavelengths, and investigate the subject, the chromatic aberration using a beam intensity of each optical laser using the light reflected from the irradiated light automatic focusing apparatus using the method are provided. The present invention provides, filtering the one of the laser only light from a plurality of laser light is irradiated and reflected on the subject, and by applying trigonometry using the filtered light of the laser light beam intensity is also proposed techniques for controlling the auto focus. |
