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25.4mm Dia. x 50.8mm FL, Uncoated, ZnSe Aspheric Lens

TECHSPEC Zinc Selenide (ZnSe) Aspheric Lenses

TECHSPEC Zinc Selenide (ZnSe) Aspheric Lenses

Stock #39-495
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Qty 1-10
£689.35
Qty 11
£620.42
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Diameter (mm):
25.40 +0.00/-0.10
Effective Focal Length EFL (mm):
50.80
Numerical Aperture NA:
0.25
Back Focal Length BFL (mm):
49.35
Center Thickness CT (mm):
3.50 ±0.10
Coating:
Uncoated
Substrate:
II-VI Infrared ZnSe
Clear Aperture CA (mm):
22.86
Surface Quality:
40-20
Edge Thickness ET (mm):
2.38
Centering (arcmin):
≤3
Centering, ETD (μm):
≤12.7
Bevel:
Protective bevel as needed
f/#:
2
Shape of Back Surface:
Plano
Wavelength Range (nm):
600 - 18000
Conjugate Distance:
Infinite
Surface Roughness (Angstroms):
<50 RMS
Power (P-V) @ 10.6μm:
λ/10
Asphere Figure Error (λ, RMS @ 632.8nm):
0.5

Regulatory Compliance

RoHS 2015:
Reach 209:

Product Family Description

  • Edmund Optics Designed, II-VI Manufactured
  • Premier Grade ZnSe Material
  • Uncoated or Broadband 8-12µm AR Coating Available

TECHSPEC® Zinc Selenide (ZnSe) Aspheric Lenses are designed to provide diffraction-limited focusing performance for 10.6µm CO2 lasers. Manufactured from II-VI Infrared ZnSe material featuring <0.0005 cm-1 bulk absorption at 10.6µm, these lenses are available uncoated or with a broadband anti-reflection coating providing superior transmission from 8 - 12µm. The precision designs are ideal for integration into laser systems, thermal imaging assemblies, and FTIR devices. TECHSPEC Zinc Selenide Aspheric Lenses feature an irregularity of <λ/20 at 10.6µm, 40-20 surface quality, and <50Å surface roughness.

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