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ISP Optics Silicon (Si) Aspheric Lenses

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  • 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.

Common Specifications

Diameter (mm):
25.40 +0.00/-0.13
Centering, ETD (μm):
<20
Clear Aperture CA (mm):
22.86
Bevel:
Protective bevel as needed
Shape of Back Surface:
Concave
Surface Roughness (Å):
<100 Ra
Substrate:
Surface Quality:
60-40
Conjugate Distance:
Infinite
Irregularity (P-V) @ 632.8nm:
λ/4

Products

Dia. (mm) EFL (mm) NA  Coating   Model Number   Compare   Stock Number   Price  Buy
25.40 12.70 1.00 Uncoated ASPH-SI-25-12
25.40 12.70 1.00 BBAR (3000-5000nm) HDAR35-ASPH-SI-25-12
25.40 25.40 0.50 Uncoated ASPH-SI-25-25
25.40 25.40 0.50 BBAR (3000-5000nm) HDAR35-ASPH-SI-25-25
25.40 50.80 0.25 Uncoated ASPH-SI-25-50

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