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All Products / Optics / Optical Lenses / Double-Concave (DCV) Lenses / VIS-NIR Coated Double-Concave (DCV) Lenses
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

12mm Dia. x -12mm FL, VIS-NIR Coated, Double-Concave Lens

Any of our lenses with a diameter of 5mm or greater can be specified with blackened edges. To specify the blackening, simply append a –INK to the BBAR coated stock number.
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Stock #45-928 3-5 days
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Other Coating Options
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Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
S$68.15
Qty 1-9
S$68.15
Qty 10+
S$61.26
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Specifications

General

Type:
Double-Concave Lens

Physical & Mechanical Properties

Diameter (mm):
12.00 +0.0/-0.025
Bevel:
Protective bevel as needed
Center Thickness CT (mm):
3.00
Center Thickness Tolerance (mm):
±0.05
Centering (arcmin):
<1
Clear Aperture CA (mm):
11.00
Edge Thickness ET (mm):
4.71

Optical Properties

Effective Focal Length EFL (mm):
-12.00
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-SF11
f/#:
1.00
Numerical Aperture NA:
0.50
Coating:
VIS-NIR (400-1000nm)
Wavelength Range (nm):
400 - 1000
Back Focal Length BFL (mm):
-12.81
Coating Specification:
Rabs ≤0.25% @ 880nm
Ravg ≤1.25% @ 400 - 870nm
Ravg ≤1.25% @ 890 - 1000nm
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1
Radius R1=-R2 (mm):
-19.47
Surface Quality:
40-20
Damage Threshold, By Design: 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:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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Reach 235:
Compliant
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Product Details

  • AR Coated to Provide <1.25% Reflectance per Surface for 400 - 1000nm
  • <0.25% Reflectance @ 880nm
  • Designed for 0° Angle of Incidence
  • Various Coating Options: Uncoated, VIS-EXT, MgF2, VIS 0°, NIR I, and NIR II

TECHSPEC® VIS-NIR 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-NIR Coated Double-Concave (DCV) Lenses are optimized for transmission (>99%) in the near-infrared. These lenses are also available Uncoated, VIS-EXT, MgF2, VIS 0°, NIR I, or with NIR II AR coating options.

Technical Information

Coating Curves

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Compatible Mounts