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DLC Coated 8-12µm Si Window 25mm Dia 2mm T

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Stock #92-205 New 20+ In Stock
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$385.00
Volume Pricing
Qty 1-10 $385.00 each
Qty 11-25 $308.00 each
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Specifications

General

Type:
Protective Window
Note:
Arrow on side of window points to DLC-Coated surface

Physical & Mechanical Properties

Diameter (mm):
25.00 ±0.20
Thickness (mm):
2.00 ±0.20
Parallelism (arcmin):
3
Bevel:
Protective as needed
Clear Aperture (%):
90
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
1,150.00

Optical Properties

Coating:
S1: Hydrophobic DLC
S2: 8-12µm BBAR
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Silicon (Si)
Surface Quality:
80-50 (Scratch number refers to width in microns)
Transmission (%):
>70 (average, @ 8-12µm)
Wavelength Range (nm):
8000 - 12000
Surface Flatness (P-V):
3-5λ per inch across clear aperture

Threading & Mounting

Mount:
Unmounted

Environmental & Durability Factors

Coating Abrasion:
S1: Severe, per MIL-PRF-13830B
S2: N/A
Coating Humidity:
S1 & S2: ≥24 Hours per MIL-PRF-13830B
Coating Salt Spray:
S1 & S2: ≥24 Hours per MIL-PRF-13830B

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 253:

Product Details

  • Twice as Hard as Germanium
  • >70% Average Transmission in 8-12μm Wavelength Range
  • Excellent Alternative to Ge for LWIR Applications
  • Available In Sizes Up To 76.2mm Diameter

DLC Coated Silicon (Si) Windows for Thermal Imaging feature a Diamond-Like Carbon (DLC) coating on one surface of a precision Si substrate and an AR coating on the other, making them well-suited for use as protective windows in harsh environments. Conforming to both the MIL-F-48616 and MIL-C-48497C environmental standards, these windows have excellent performance in the LWIR range, with an average transmission of >70% from 8-12μm. Featuring exceptional hardness and scratch resistance DLC Coated Silicon (Si) Windows for Thermal Imaging are highly resistant to abrasion and impact, well suited for high-temperature use, and are an ideal alternative to Germanium. These windows have high thermal conductivity for heat dissipation and a maximum safe operating temperature of 200°C. Common applications for these windows include thermography, medical imaging, surveillance, furnace inspection, and process control.

Technical Information

Chart comparing transmission of silicon with DLC coating to uncoated and AR coated germanium from 8 to 12 micrometers

Coating Curves

 
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