Negative-Cylinder-Model.jpg

Negative Cylinder

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

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

Viewing 1 to 12 (12 Total)
Sort by:
Part Number
X (Length)
Y (Width)
Effective Focal Length
Back Focal Length
Center Thickness
Edge Thickness
L-PCN001
25.0000
7.0000
-6.3500
-8.3500
3.1
5.1000
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L-PCN005
25.0000
13.0000
-12.7000
-14.8500
3.2
7.1000
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L-PCN009
25.0000
16.0000
-19.0000
-21.4000
3.6
7.1000
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L-PCN013
60.0000
16.0000
-25.4000
-27.9000
3.7
6.0000
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L-PCN017
60.0000
16.0000
-40.0000
-43.1000
4.6
6.0000
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L-PCN021
60.0000
21.0000
-60.0000
-63.1000
4.4
6.1000
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L-PCN026
60.0000
31.0000
-80.0000
-82.3000
3.2
6.0000
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L-PCN031
60.0000
51.0000
-100.0000
-102.3000
3
9.4000
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L-PCN035
60.0000
51.0000
-150.0000
-154.0000
5.4
9.5000
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L-PCN038
60.0000
51.0000
-200.0000
-205.0000
6.5
9.6000
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L-PCN041
60.0000
50.0000
-250.0000
-255.4000
7
9.4000
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L-PCN044
60.0000
50.0000
-300.0000
-306.0000
7.5
9.5000
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