Control of lens position in auto-focus cameras using semiconductor laser range finder

2002 ◽  
Author(s):  
Y. Yoshida ◽  
S. Shinohara ◽  
H. Ikeda ◽  
K. Tada ◽  
H. Yoshida ◽  
...  
Keyword(s):  
Semiconductor Laser ◽  
Laser Range Finder ◽  
Range Finder ◽  
Laser Range ◽  
Lens Position ◽  
Auto Focus

Spatial Filtering Collimator for Optimized Laser Indicator and Laser Range Finder

2011 ◽  
Vol 403-408 ◽  
pp. 2764-2767
Author(s):  
June Wen Chen ◽  
Jing Bin Duan ◽  
Shih Jui Wu ◽  
Yi Shan Chen ◽  
Li An Chiu ◽  
...  
Keyword(s):  
Laser Beam ◽  
Semiconductor Laser ◽  
Spatial Filtering ◽  
Laser Range Finder ◽  
Range Finder ◽  
Laser Range ◽  
Fine Line

A novel spatial filtering collimator is developed for the laser indication application. The mass produced, inexpensive, red and blue semiconductor laser modulars can easily be optimized as fine line laser indicator source. We have theoretically investigated the results, simulated the designs, and measure the laser beam spots and the laser fine lines. The spatial filtering collimator is designed and optimized for practical used and the results are very satisfactory.

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