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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25mm Dia. x 75mm FL, VIS-NIR Coated, Double-Convex Lens

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Stock #45-891
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Qty 1-9
S$75.95
Qty 10+
S$67.43
Volume Pricing
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Diameter (mm):
25.00 +0.0/-0.025
Back Focal Length BFL (mm):
73.84
Effective Focal Length EFL (mm):
75.00
Coating:
VIS-NIR (400-1000nm)
Coating Specification:
Rabs ≤0.25% @ 880nm
Ravg ≤1.25% @ 400 - 870 nm
Ravg ≤1.25% @ 890 - 1000nm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
40-20
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
Center Thickness CT (mm):
3.50
Center Thickness Tolerance (mm):
±0.10
Edge Thickness ET (mm):
1.45
Radius R1=-R2 (mm):
76.66
Clear Aperture CA (mm):
24.00
f/#:
3.00
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1
Numerical Aperture NA:
0.17
Type:
Double-Convex Lens
Typical Energy Density Limit:
5 J/cm2 @ 532nm, 10ns
Wavelength Range (nm):
400 - 1000

Regulatory Compliance

RoHS 2015:
Reach 219:

Product Family Description

TECHSPEC® VIS-NIR Coated Double-Convex (DCX) Lenses, also referred to as bi-convex lenses, have two positive, symmetrical faces with equal radii on both sides. These lenses are generally recommended for finite imaging applications with a conjugate ratio (ratio between object distance and image distance) between 0.2 and 5. At a conjugate ratio of 1, aberrations such as spherical aberration, chromatic aberration, coma, and distortion are minimized or cancelled due to the symmetric lens design. TECHSPEC VIS-NIR Coated Double-Convex Lenses are available in a variety of substrates and coating options for the visible and NIR spectra.

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