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

18mm Dia. x 36mm FL, VIS 0° Inked, Double-Convex 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 #47-902-INK 10-15 days
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Other Coating Options
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S$79.50
Qty 1-9
S$79.50
Qty 10+
S$70.88
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Diameter (mm):
18.00 ±0.025
Back Focal Length BFL (mm):
34.59
Effective Focal Length EFL (mm):
36.00
Coating:
VIS 0° (425-675nm)
Coating Specification:
Ravg ≤0.4% @ 425 - 675nm
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
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
Center Thickness CT (mm):
4.80
Center Thickness Tolerance (mm):
±0.10
Edge Thickness ET (mm):
2.55
Radius R1=-R2 (mm):
36.60
Clear Aperture CA (mm):
17.00
f/#:
2.00
Focal Length Specification Wavelength (nm):
587.6
Focal Length Tolerance (%):
±1
Numerical Aperture NA:
0.25
Type:
Double-Convex Lens
Wavelength Range (nm):
425 - 675
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

Regulatory Compliance

RoHS:
Compliant
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Certificate of Conformance:
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Product Family Description

TECHSPEC® VIS 0° 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 0° Coated Double-Convex Lenses are available in a variety of substrates and coating options for the visible and NIR spectra.