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

12mm Dia. x -24mm FL, VIS 0° Coated, Double-Concave Lens

Stock #48-695 In Stock
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Diameter (mm):
12.00 +0.0/-0.025
Effective Focal Length EFL (mm):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Numerical Aperture NA:
VIS 0° (425-675nm)
Double-Concave Lens
Wavelength Range (nm):
425 - 675
Back Focal Length BFL (mm):
Protective bevel as needed
Center Thickness CT (mm):
Center Thickness Tolerance (mm):
Centering (arcmin):
Clear Aperture CA (mm):
Coating Specification:
Ravg ≤0.4% @ 425 - 675nm
Edge Thickness ET (mm):
Focal Length Specification Wavelength (nm):
Focal Length Tolerance (%):
Radius R1=-R2 (mm):
Surface Quality:
Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
5 J/cm2 @ 532nm, 10ns
Power (P-V) @ 632.8nm:
Irregularity (P-V) @ 632.8nm:

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Family Description

TECHSPEC® VIS 0°  Coated Double-Concave (DCV) Lenses are designed to have two inward curved surfaces and a negative focal length similar to Plano-Concave (PCV) lenses. These lenses can be used for balancing aberrations created by other lenses within a system due to their negative spherical aberration. Double-Concave (DCV) lenses are commonly used in a variety of applications including image reduction, beam expansion and telescopes TECHSPEC® VIS 0° Coated Double-Concave (DCV) Lenses are best used in 0° angle of incidence situations and provide optimized transmission in the 425nm – 675nm range. These lenses are also available Uncoated, VIS-EXTMgF2VIS-NIRNIR I, or with NIR II AR coating options.