Powell Lens



Powell lens is used to generate straight line. With aspherical curvature on its apex, the output line from powell lenses is even distribution of energy. For comparision, Cylindrical lenses generate gaussian beam profiles with hot-spot centre points and fading edges. The uniformity of output line is also related with incident wavelength, beam size, divergence, and working distance. 

To get even distribution of energy, The apex curvature need to be slightly modified and optimized for particular laser beam.


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Powell lens is used to generate straight line. With aspherical curvature on its apex, the output line from powell lenses is even distribution of energy. For comparision, Cylindrical lenses generate gaussian beam profiles with hot-spot centre points and fading edges. The uniformity of output line is also related with incident wavelength, beam size, divergence, and working distance. 

To get even distribution of energy, The apex curvature need to be slightly modified and optimized for particular laser beam.



Products Description




Powell Lenses is an optical line-drawing prism with full fan angles from 1 ° to 120 °. Standard specifications are 5 °, 10 °, 30 °, 45 °, 53 °, 55 °, 60 °, 70 °, 85 °, 90 °, and 110 °. 120 °.

Powell prism can optimally divide the laser beam into a straight line with uniform optical density, good stability and good linearity. The lineation mode is better than that of cylindrical lens, which can eliminate the central hot spot and faded edge distribution of gaussian beam.
 Gaussian laser beam by ordinary cylindrical lens, produces the uneven distribution of straight line, and Powell at the top of the prism is complex two-dimensional aspheric surface, through laser will produce a large number of spherical aberration, light path is redistributed, reduce the light of the central region, increase the edge of the light, to form a uniform line, suitable for all kinds of biological medicine, automobile assembly, food processing and machine vision applications.



Material:               
Optical Glass, Fused Silica etc.
Diameter tolerance:
+/-0.1mm
Surface quality :
60-40
Clear aperture:
90%
Bevel:
0.2mmX45° Protective bevel    

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