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.
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 |
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