Powell Prism
Prisms
Optical Components
BK7 Glass Powell Lens
PARAMETER:
The Powell lens is a quantum leap forward in line generator performance over the simple cylinder lens. A cylinder lens produces a poorly illuminated line, one limited by the non-uniform, Gaussian laser beam. The Powell lens' rounded roof is in fact a complex two-dimensional aspheric curve that generates a tremendous amount of spherical aberration that redistributes the light along the line; decreasing the light in the central area while increasing the light level at the line's ends. The result is a very uniformly illuminated line used in all manner of machine vision applications; from bio-medical and automobile assembly to chocolate chip cookie production.
The Powell lens resembles a round prism with a curved roof line. The lens is a laser line generator, stretching a narrow laser beam into a uniformly illuminated straight line
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Specification
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Material
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Fused silica/ BK7glass
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Diameter
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Φ0.8mm, Φ1mm, Φ2mm, Φ3mm, Φ5mm, Φ9mm, Φ10mm, Φ 15mm or customized size
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Diameter Tolerance
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+0.0/-0.05mm / ±0.05mm
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Range of Fan
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3°,5°,10°,15°,20°,30°,45°,53°,60°,70°,75°,85°,90°96°,100°,110°,120°
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Angle tolerance
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<3arc min~30arc sec.
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Beam wide
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3mm, 4mm, 5mm or customized size
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Surface quality
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60/40, 40/20, 20/10 scratch and dig
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Clear aperture
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>90%
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Bevel
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<0.2mm×45°
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Coating
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As per customer’s request
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