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N-BK7/H-K9L Material Powell Lens,Powell Prism With 650nm AR coating

Basic Information
Place of Origin: Wuhan,China
Brand Name: Wuhan Siwer Optics
Model Number: Beam Shaping Lens
Minimum Order Quantity: 10 pieces
Price: 2-60USD/piece
Packaging Details: 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Delivery Time: 3-4 weeks
Payment Terms: T/T, Western Union
Supply Ability: 500 pieces/month
Detail Information
Material: N-BK7 Or H-K9L Size Tolerance: +0/-0.1mm
Chamfer: 0.2mm Surface Quality: 40/20
Standard Coating: AR@650nm Or Uncoated Usage: Laser
Height: 9mm Diameter: 9mm
Fan Angle: 30 Deg Index Of Refraction Nd: 1.517
High Light:

pcx lens

,

half ball lens


Product Description

Powell lens

Powell lens is like a curved roof line with a circular prism. The lens is a laser line generator, which stretches a narrow laser beam into a uniformly illuminated straight line.

Powell prism is a quantum leap wire generator whose performance is better than that of a simple cylindrical lens. The cylindrical lens produces a line of poor illumination, which is limited by a non-uniform, Gaussian laser beam. Powell lens' rounding to the roof is actually generated by spherical aberration redistribution along the light of a large number of complex two-dimensional aspheric curves; reduce the light in the center area, while improving the light level at the end of the line. As a result, very uniform lighting lines are used in all forms of machine vision applications; from biomedical and automotive assembly to the production of chocolate biscuits.

Fan angle
The width of the fan angle of Powell lens is a function of the refractive index of the glass and the angle of the roof. The steeper the roof and the higher the refractive index, the wider the fan angle and the longer the time, the line for a given projection distance. Small fan angle usually uses mild optical glass, n = 1.5, refractive index. The angle of the large fan, preferably made of high refractive index glass, n = 1.8, or higher, to minimize the steeper angle of the roof.

N-BK7/H-K9L Material Powell Lens,Powell Prism With 650nm AR coating 0

Uniform line

The performance of Powell lens is very sensitive to the characteristics of the incident laser beam and the quality of the aspheric surface of the lens. For demanding applications, uniform illumination of laser lines is best achieved by matching the specific beam characteristics of the Powell lens to the laser module.

The uniformity of Powell lens is not an absolute characteristic, it depends on testing technology. For example, the uniformity measurement will depend on whether a projection line of Powell prism is evaluated in a machine vision application to see a surface by a camera or swept light by a divergent fan detector for laser safety assessment. The difference in uniformity characteristics increases the fan angle, and the divergence difference of Powell lens over 20 degrees becomes significant.

N-BK7/H-K9L Material Powell Lens,Powell Prism With 650nm AR coating 1

 

Fan angle
materials
wavelength(nm)
Input beam(mm)
BK7
532,650
0.8-1,2-3,5
10°
BK7
532,650
0.8-1,2-3,5
30°
BK7
532,650
0.8-1,2-3,5
45°
SF6
532,650
0.8-1,2-3,5
53°
BK7
532,650
0.8-1,2-3,5
60°
SF6
532,650
0.8-1,2-3,5
70°
SF6
532,650
0.8-1,2-3,5
85°
SF6
532,650
0.8-1,2-3,5
90°
SF6
532,650
0.8-1,2-3,5

 

 

N-BK7/H-K9L Material Powell Lens,Powell Prism With 650nm AR coating 2

 


 

Production Line

N-BK7/H-K9L Material Powell Lens,Powell Prism With 650nm AR coating 3

 

 

 

Contact Details
Jason