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25.4mm Dia. x 12.7mm FL, 3 - 5µm BBAR Coated, ISP Optics Silicon (Si) Aspheric Lens | HDAR35-ASPH-SI-25-12

Name: 25.4mm Dia. x 12.7mm FL, 3 - 5µm BBAR Coated, ISP Optics Silicon (Si) Aspheric Lens | HDAR35-ASPH-SI-25-12
Brand: ISP Optics
SKU: 24-884
Price: ₹54,375

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Stock #24-884 Clearance 10 to 12 days

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₹54,375

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₹54,375

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Diameter (mm):

25.40 +0.00/-0.13

Effective Focal Length EFL (mm):

12.70

Numerical Aperture NA:

1.00

Back Focal Length BFL (mm):

10.70

Silicon (Si)

Coating:

BBAR (3000-5000nm)

Coating Specification:

R_avg <0.5% @ 3 - 5μm
R_abs <1.5% @ 3 - 5μm

Centering, ETD (μm):

<20

Surface Quality:

60-40

Clear Aperture CA (mm):

22.86

Edge Thickness ET (mm):

0.99

Center Thickness CT (mm):

4.00 ±0.20

f/#:

0.50

Bevel:

Protective bevel as needed

Shape of Back Surface:

Concave

Wavelength Range (nm):

3000 - 5000

Conjugate Distance:

Infinite

Surface Roughness (Å):

<100 Ra

Irregularity (P-V) @ 632.8nm:

λ/4

Model Number:

HDAR35-ASPH-SI-25-12

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 240:

Compliant

Product Family Description

Transmission from 1.2 - 7μm
Diffraction-Limited Performance
Available Uncoated or HDAR Coated for 3 - 5μm

ISP Optics Silicon (Si) Aspheric Lenses provide diffraction-limited performance for weight-sensitive, Mid-Wave Infrared (MWIR) applications. Available uncoated for applications in the 1.2 - 7μm range or with a high durability anti-reflection (HDAR) coating in the 3 - 5μm range, these lenses are ideal for harsh environment or black body radiation applications. Silicon features a Knoop Hardness of 1150 making it harder and less brittle than Germanium. ISP Optics Silicon (Si) Aspheric Lenses feature a low density of 2.329g/cm³, making them lightweight alternatives to Germanium and Zinc Selenide.

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