Véhicule
Asphere Lenses
|
Manufacturing Limits for Aspheric Surfaces Based on Form Error Tolerance |
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Form Error > 2μm Lower Resolution Profilometry (2-D)1 |
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Attribute |
Minimum |
Maximum |
Diameter (mm) |
3 |
250 |
Local Radius (mm) |
-8 (Concave) |
∞ |
Sag (mm) |
0 |
50 |
Departure (mm) |
0.01 |
20 |
Included Angle (°) |
0 |
120 |
|
||
Form Error 0.5 – 2μm Higher Resolution Profilometry (2-D)1 |
||
Attribute |
Minimum |
Maximum |
Diameter (mm)3 |
3 |
250 |
Local Radius (mm) |
-12 (Concave) |
∞ |
Sag (mm) |
0 |
25 |
Departure (mm) |
0.01 |
20 |
Included Angle (°) |
0 |
150 |
|
||
Form Error < 0.5μm Interferometry with Stitching (3-D) |
||
Attribute |
Minimum |
Maximum |
Diameter (mm)3 |
3 |
250 |
Local Radius (mm) |
-13 (Concave) |
∞ |
Sag (mm) |
0 |
25 |
Departure (mm) |
0.002 |
1 |
Included Angle (°) |
0 |
120+5 |
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