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See all 6 Products in Family

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

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

Name: 25mm Dia x 50mm FL 3-5μm AR Coated, Si Aspheric Lens
Brand: TECHSPEC
SKU: 89-618
Price: ₹54,825.00

Stock #89-618

₹54,825.00 Other Coating Options

Qty 1-5
₹54,825.00

Qty 6+
₹42,840.00

Volume Pricing
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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

Center Thickness CT (mm):

3.00 ±0.10

Coating:

BBAR (3000-5000nm)

Coating Specification:

R_avg <3% @ 3 - 5μm

Silicon (Si)

Clear Aperture CA (mm):

22.5

Asphere Figure Error (μm RMS):

0.1

Surface Accuracy, P-V (μm):

<0.3

Surface Quality:

60-40

Edge Thickness ET (mm):

2.3

Centering (arcmin):

≤10

Centering, ETD (μm):

<21.8

Bevel:

Protective bevel as needed

f/#:

2.00

Edges:

Diamond Turned

Radius R₂ (mm):

75.698

Shape of Back Surface:

Concave

Typical Applications:

3000 - 5000

Conjugate Distance:

Infinite

Focal Length Specification Wavelength (nm):

4000

Regulatory Compliance

RoHS 2015:

Compliant

Reach 223:

Compliant

Product Family Description

Diffraction-Limited Performance
Low Density and Dispersion
Ideal for Weight Sensitive IR Applications

TECHSPEC® Silicon Aspheric Lenses are high performance, lightweight solutions for MWIR applications, and are ideal alternatives for costly ZnSe lenses and brittle Germanium lenses. 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.

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