Name: 25mm Dia x 50mm FL 3-5μm AR Coated, Si Aspheric Lens
Brand: TECHSPEC
SKU: 89-618
Price: ₹56,525.00

25mm Dia x 50mm FL 3-5μm AR Coated, Si Aspheric Lens

Stock #89-618 10 to 12 days Other Coating Options

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₹56,525.00

Qty 1-5
₹56,525.00

Qty 6+
₹48,046.25

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Diameter (mm):

25.00 +0.00/-0.10

Effective Focal Length EFL (mm):

50.00 @ 4000nm

Numerical Aperture NA:

0.25

Back Focal Length BFL (mm):

47.78

Silicon (Si)

Aspheric Design Wavelength (nm):

4000

Asphere Figure Error, RMS @ 632.8nm:

λ/6

Coating:

BBAR (3000-5000nm)

Coating Specification:

R_avg <3% @ 3 - 5μm

Surface Accuracy, P-V (μm):

<0.3

Centering (arcmin):

≤10

Centering, ETD (μm):

<21.8

Surface Quality:

60-40

Clear Aperture CA (mm):

22.5

Edge Thickness ET (mm):

2.3

Center Thickness CT (mm):

3.00 ±0.10

f/#:

2.00

Bevel:

Protective bevel as needed

Edges:

Diamond Turned

Radius R₂ (mm):

75.698

Shape of Back Surface:

Concave

Type:

Aspheric Lens

Wavelength Range (nm):

3000 - 5000

Conjugate Distance:

Infinite

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

Product Family Description

Diffraction-Limited Performance
Low Density and Dispersion
Ideal for Weight Sensitive IR Applications
Available with BBAR (1650-3000nm) or Mid-Wave Infrared (3000-5000nm) AR Coatings

TECHSPEC® Silicon Aspheric Lenses are high performance, lightweight solutions for BBAR and Mid-Wave Infrared (MWIR) applications and are ideal alternatives for costly ZnSe lenses and brittle Germanium lenses. These lenses are available with efficient broadband AR coatings for the BBAR (1650-3000nm) or MWIR (3000-5000nm) spectral regions. TECHSPEC Silicon Aspheric Lenses feature the mechanical and thermal properties required to withstand many of the effects of harsh environments including fluctuations in temperature and pressure. Because silicon is a low density material, these lenses are also ideal for weight-sensitive systems, such as those found in many defense applications.