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

18.0mm Dia. x 25.0mm FL, MgF2 Coated, Plano-Convex Lens

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Stock #38-251 Other Coating Options
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$34.00
Qty 1-9
$34.00
Qty 10+
$30.75
Volume Pricing
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Diameter (mm):
18.00 +0.0/-0.025
Effective Focal Length EFL (mm):
25.00 @ 587.6nm
Back Focal Length BFL (mm):
21.51
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
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
Focal Length Tolerance (%):
±1
Centering (arcmin):
<1
Center Thickness CT (mm):
5.30 ±0.10
Edge Thickness ET (mm):
1.65
Radius R1 (mm):
12.92
Clear Aperture CA (mm):
17
f/#:
1.39
Numerical Aperture NA:
0.36
Type:
Plano-Convex Lens
Bevel:
Protective bevel as needed
Typical Energy Density Limit:
10 J/cm2 @ 532nm, 10ns
Wavelength Range (nm):
400 - 700
Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
10 J/cm2 @ 532nm, 10ns

Regulatory Compliance

RoHS 2015:
Reach 224:
Certificate of Conformance:

Product Family Description

Plano-Convex (PCX) Lenses have a positive focal length, making them ideal for collecting and focusing light in imaging applications. They are also useful in a variety of applications involving emitters, detectors, lasers, and fiber optics. Coated versions have optimum light transmission. Available in a wide variety of diameters and focal lengths.

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