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

12mm Dia. x -18mm FL, NIR II, Inked, Double-Concave Lens

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Stock #68-012-INK Other Coating Options
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€50,00
Qty 1-9
€50,00
Qty 10+
€44,50
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Specifications

Diameter (mm):
12.00 ±0.025
Effective Focal Length EFL (mm):
-18.00
Back Focal Length BFL (mm):
-18.65
Coating:
NIR II (750-1550nm)
Coating Specification:
Rabs ≤1.5% @ 750 - 800nm
Rabs ≤1.0% @ 800 - 1550nm
Ravg ≤0.7% @ 750 - 1550nm
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
Clear Aperture CA (mm):
11.00
Center Thickness CT (mm):
2.00
Center Thickness Tolerance (mm):
±0.05
Centering (arcmin):
<1
Edge Thickness ET (mm):
3.76
f/#:
1.5
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1.00
Numerical Aperture NA:
0.33
Radius R1=-R2 (mm):
-18.94
Type:
Double-Concave Lens
Typical Energy Density Limit:
8 J/cm2 @ 1064nm, 10ns
Wavelength Range (nm):
750 - 1550
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
8 J/cm2 @ 1064nm, 10ns

Regulatory Compliance

RoHS:

Learn More

Product Family Description

  • AR Coated to Provide <0.7% Reflectance per Surface for 750 - 1550nm
  • Double-Concave Lenses Have Two Inward Curved Surfaces and a Negative Focal Length
  • Used for Image Reduction and to Spread Light
  • Various Coating Options: Uncoated, MgF2, VIS 0°, VIS-NIR, and NIR I

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

Technical Information

Compatible Mounts

Title  Type Compare Stock Number  Price Buy
25mm Cage 12mm Diameter Lens Mount Fixed #85-550 €36,50 Request Quote
12.0mm Optic Dia., Optic Mount Fixed #64-555 €39,00
Qty 10+ €35,10 Request Quote
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