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Diameter (mm):
12.70 +0.0/-0.025
Effective Focal Length EFL (mm):
25.40
Focal Length Tolerance (%):
±1
Back Focal Length BFL (mm):
22.45
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
11.70
Centering (arcmin):
<1
Center Thickness CT (mm):
5.75 ±0.20
Center Thickness CT 1 (mm):
4.00 ±0.10
Center Thickness CT 2 (mm):
1.75 ±0.10
Radius R1 (mm):
16.77
Radius R2 (mm):
-13.63
Radius R3 (mm):
-50.73
Edge Thickness ET (mm):
4.10
Substrate:
Many glass manufacturers offer the same material characteristics under different trade names. Learn More
TECHSPEC ® MgF2 Coated Achromatic Lenses consist of two optical components cemented together to form an achromatic doublet which is computer optimized to correct for on-axis spherical and chromatic aberrations. These lenses feature a single layer of MgF2 which provides less than 1.75% reflectivity from 400 – 700nm. TECHSPEC MgF2 Coated Achromatic Lenses are best for applications involving multi-color (white light) imaging due to their specific doublet lens pairing that enables them to correct the color separation inherent in glass. Having eliminated the problematic chromatic aberrations, achromatic doublet lenses become the most cost-efficient means for polychromatic illumination and imaging.
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