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Negative-Cylinder-Model

Negative Cylinder

Negative cylinders have one flat surface and one concave surface and have a negative focal length.

 

Below are our standard negative cylinder specifications. 
Don't see what you need? Request custom optics.

Lens Type Negative Cylinder Length Tolerance ± 0.10 mm
Glass Type N-BK7 Width Tolerance ± 0.14 mm
Dimension Unit mm Center Thickness ± 0.50 mm
Focal Length ± 2% Surface Quality 60-40
Surface Accuracy Y-Direction
X-Direction
1/2 Wave Centration < 3 arc minutes
1/2 Wave per 25 mm Clear Aperture 90%
Flat Annulus   0.50 +0 / -0.40    
Coating Uncoated, Specify your coating (See Coating Chart for Available Options)
* All dimensions are in mm
Negative-Cylinder-Model
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Part Number X (Length) Y (Width) Effective Focal Length Back Focal Length Center Thickness Edge Thickness  
L-PCN044 60 50 -300 -306 7.5 9.5 Add to Quote
L-PCN041 60 50 -250 -255.4 7 9.4 Add to Quote
L-PCN038 60 51 -200 -205 6.5 9.6 Add to Quote
L-PCN035 60 51 -150 -154 5.4 9.5 Add to Quote
L-PCN031 60 51 -100 -102.3 3 9.4 Add to Quote
L-PCN026 60 31 -80 -82.3 3.2 6 Add to Quote
L-PCN021 60 21 -60 -63.1 4.4 6.1 Add to Quote
L-PCN017 60 16 -40 -43.1 4.6 6 Add to Quote
L-PCN013 60 16 -25.4 -27.9 3.7 6 Add to Quote
L-PCN009 25 16 -19 -21.4 3.6 7.1 Add to Quote
L-PCN005 25 13 -12.7 -14.85 3.2 7.1 Add to Quote
L-PCN001 25 7 -6.35 -8.35 3.1 5.1 Add to Quote