Neigiami cilindriniai lęšiai

Neigiami cilindriniai lęšiai

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Material BK7, FS, UVFS, CaF2, ZnSe
Dimensional tolerances +0/-0.1 mm
Center thickness 3 mm
Thickness tolerance ±0.1 mm
Clear aperture >90%
Focal length tolerance ±3 %
Design wavelength 632.8 nm
Surface quality 40-20 S-D
Surface figure <λ/4 @ 632.8 nm
Centration error <3 arcmin
Protective chamfers <0.25 mm x 45°
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Cylindrical lenses with negative focal length expand beam along one coordinate. Typical application for the lenses is beam shaping. Round laser beam can be focused into a line-spot with help of the lens. Anamorphic shape of the image/beam can be realized by using pair of cylindrical lenses, which makes it irreplaceable tool for circularization of diode laser output beams.
varna Rectangular and Round shape are available
varna Diverges light in one dimension only
varna Other dimensions are available in small and mass production quantities

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