Name: 25.4mm Dia. x 250mm FL, Uncoated, ZnSe Plano-Convex Lens
Brand: TECHSPEC
SKU: 39-536
Price: S$412.50

Diameter (mm):

25.40 +0.00/-0.10

Effective Focal Length EFL (mm):

250.00 @ 10.6µm

Back Focal Length BFL (mm):

249

Coating:

Uncoated

II-VI Infrared ZnSe

Surface Quality:

40-20

Power (P-V) @ 632.8nm:

Power (P-V) @ 10.6μm:

λ/10

Irregularity (P-V) @ 10.6μm:

λ/20

Centering, ETD (μm):

≤12.7

Center Thickness CT (mm):

2.40 ±0.10

Edge Thickness ET (mm):

2.17

Radius R₁ (mm):

350.67

Clear Aperture CA (mm):

22.86

f/#:

9.84

Numerical Aperture NA:

0.05

Type:

Plano-Convex Lens

Bevel:

Protective bevel as needed

Wavelength Range (nm):

600 - 18000

Bulk Absorption Coefficient (cm¹):

<0.0005 @ 10.6μm

Surface Roughness (Angstroms):

<50 RMS

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Certificate of Conformance:

View

Product Family Description

Edmund Optics® Designed, II-VI Manufactured
Premier Grade ZnSe Material
Uncoated or Broadband AR Coating Options

TECHSPEC® Zinc Selenide (ZnSe) Plano-Convex (PCX) Lenses are designed for focusing or collimation applications in the mid-wave and longwave infrared spectrum. Manufactured by II-VI, these lenses feature Infrared ZnSe material with <0.0005cm^-1 bulk absorption at 10.6µm and are available uncoated or with a variety of broadband anti-reflection coating options. The 8-12µm coating is ideal for use with CO₂ lasers and thermal camera applications, whereas the dual band 3-12µm coating is ideal for hyperspectral applications. TECHSPEC® Zinc Selenide PCX Lenses feature an irregularity of <λ/20 at 10.6µm, 40-20 surface quality, and <50Å surface roughness. Three diameter options are available, with effective focal lengths ranging from 12.7mm to 250mm.

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