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Products / Optics / Optical Lenses / Achromatic Lenses / MgF2 Coated Negative Achromatic Lenses
See all 24 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

12.5mm Dia x -75mm Negative Doublet Lens FL MgF2 Coated

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Stock #47-016 Other Coating Options
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- +
C$114.80
Qty 1-5
C$114.80
Qty 6+
C$97.58
Volume Pricing
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Diameter (mm):
12.50 +0.0/-0.025
Effective Focal Length EFL (mm):
-75.00
Focal Length Tolerance (%):
±1
Back Focal Length BFL (mm):
-77.47
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
11.50
Centering (arcmin):
<1
Center Thickness CT 1 (mm):
2.50
Center Thickness CT 2 (mm):
3.00
Center Thickness Tolerance (mm):
±0.2
Radius R1 (mm):
-46.07
Radius R2 (mm):
36.65
Radius R3 (mm):
108.00
Edge Thickness ET (mm):
6.05
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7 / N-SF5
Surface Quality:
40-20
f/#:
6.00
Numerical Aperture NA:
0.08
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Bevel:
Protective bevel as needed
Type:
Negative Achromatic Lens
Wavelength Range (nm):
400 - 700

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 219:
Compliant
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Certificate of Conformance:
View
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Product Family Description

TECHSPEC® MgF2 Coated Negative Achromatic Lenses consist of two optical elements cemented together. Negative doublet lenses are corrected for color and on-axis aberrations. TECHSPEC MgF2 Coated Negative Achromatic Lenses are used predominantly as Barlow lenses to extend focal lengths. These lenses are often combined with positive achromatic mirror systems and imaging lenses.

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