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Products / Optics / Optical Lenses / Double-Concave Lenses / MgF2 Coated Double-Concave (DCV) Lenses
See all 13 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia. x -50mm FL, MgF2 Coated, Double-Concave Lens

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Stock #32-997
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Qty 1-9
C$49.95
Qty 10+
C$44.21
Volume Pricing
Request Quote
Diameter (mm):
25.00 +0.0/-0.025
Effective Focal Length EFL (mm):
-50.00
Back Focal Length BFL (mm):
-50.82
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Surface Quality:
40-20
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Clear Aperture CA (mm):
24.0
Center Thickness CT (mm):
2.50
Center Thickness Tolerance (mm):
±0.10
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
Edge Thickness ET (mm):
5.40
f/#:
2.00
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1
Numerical Aperture NA:
0.25
Radius R1=-R2 (mm):
-52.10
Type:
Double-Concave Lens
Typical Energy Density Limit:
10 J/cm2 @ 532nm, 10ns
Wavelength Range (nm):
400 - 700

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 219:
Compliant
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Product Family Description

  • AR Coated to Provide <1.75% Reflectance per Surface for 400 - 700nm
  • Designed for 0° Angle of Incidence
  • Various Coating Options: Uncoated, VIS 0°, VIS-NIR, NIR I, and NIR II

Double-Concave (DCV) Lenses have two inward curved surfaces and a negative focal length. They are used for image reduction and to spread light.

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