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| Negative Achromatic Lenses |
Optical Component > Precision
Optics > Lenses |
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| Consisting of two optical elements cemented together,
negative achromats are corrected for color and on-axis aberrations.
Used predominantly as Barlow lenses to extend focal lengths, they
are often combined with positive achromatic mirror systems and CCD
lenses. All dimensions are in mm. |
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| Specifications |
| Focal Length Tolerance |
¡À2% |
| Diameter Tolerance |
¡À0.1mm |
| Center Thickness Tolerance |
0.2mm |
| Surface quality |
60/40 |
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