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ISP Optics Diamond-Like Carbon (DLC) Coated Silicon Windows

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Diamond-Like Carbon (DLC) Coated Silicon Windows

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ISP Optics Diamond-Like Carbon (DLC) Coated Silicon Windows provide anti-reflection coating on one surface and a specially designed DLC coating on the other surface, making these windows highly durable and ideal for harsh environments. The DLC Coated surface is designed to withstand temperature cycling from -80 to +160°F, salt spray for a continuous period of 72 hours, and 1,000 wiper oscillations in a sand and slurry mixture. Further, these windows meet the MIL-F-48616 and MIL-C-48497C requirements for severe abrasion. Silicon features a Knoop Hardness of 1150 and low density, making it tougher than germanium substrates and suitable for weight-sensitive applications, respectively. ISP Optics Diamond-Like Carbon (DLC) Coated Silicon Windows are engineered for 3 to 5µm, making them ideal for infrared defense applications such as thermal imaging.

Common Specifications

Note:
Arrow on substrate edge points towards DLC coated surface
Bevel:
Protective as needed
Clear Aperture (%):
85
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
1150
Parallelism (arcmin):
<3
Coating:
S1: DLC Coating
S2: BBAR (3000-5000nm)
Substrate:
Surface Flatness (P-V):
λ/10 @ 10.6μm
Surface Quality:
40-20
Wavelength Range (nm):
3000 - 5000

Products

Dia. (mm)  Thickness (mm)   Coating   Compare   Stock Number   Price  Buy
25.40 2.00 S1: DLC Coating
S2: BBAR (3000-5000nm)
38.10 2.00 S1: DLC Coating
S2: BBAR (3000-5000nm)
76.20 3.00 S1: DLC Coating
S2: BBAR (3000-5000nm)

Technical Information

Coating Specifications
Specification AR Coating DLC Coating
Adhesion per MIL-C-48497C per MIL-C-48497C
Abrasion Moderate, per MIL-C-48497C Severe, per MIL-C-48497C
Humidity 24 Hours per MIL-C-48497C 24 Hours per MIL-C-48497C
Salt Solubility - ≥24 Hours Immersion per MIL-C-675C
Salt Spray - ≥72 Hours per MIL-C-675
Temperature (°F) -80 to +160 per MIL-C-48497C -80 to +160 per MIL-C-48497C
Solubility and Cleaning per MIL-C-48497 per MIL-C-48497
Wiper - ≥1,000 Wipes of Sand/Slurry per TS-1888
Coating Temperature (°F) -80 to +160 per MIL-C-48497C -80 to +160 per MIL-C-48497C

Related Products

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

 
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