5 October 1999 Hyperbolic and oval cylindrical lenses to compress the semiconductor laser beam
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Abstract
TO utilize the mother lines to be perpendicular to each other in front and rear groups of cylindrical lenses, diffusing beam 44 degrees X 13 degrees from the window of semiconductor laser are compressed as 'parallel rays' to emerge into +/- 0.0025 rad. The sizes of the laser window are 0.1285 mm X 3.239 mm. The front focal points of cylindrical lenses in two groups are superimposed on the center of the window, and its types of second surfaces are hyperbolic and oval.
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Chunxia Li, Runshun Li, LiHeng Liu, "Hyperbolic and oval cylindrical lenses to compress the semiconductor laser beam", Proc. SPIE 3779, Current Developments in Optical Design and Optical Engineering VIII, (5 October 1999); doi: 10.1117/12.368198; https://doi.org/10.1117/12.368198
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