Application of DLC film to an infrared objective lens

Overview of DLC film

Diamond-like carbon film (DLC Film) is a type of carbon film that possesses properties similar to diamond. Known as a hard carbon film, DLC is an amorphous carbon material with a diamond-like structure. While the DLC process is more mature than diamond film production, DLC still boasts a range of excellent properties. 

• Mechanical properties: DLC films exhibit high hardness and friction resistance, making them ideal for mechanical tools, extending the service life of devices.
• Corrosion resistance: DLC films have high chemical inertness, acting as a protective layer to prevent chemical reactions between the substrate and external elements.
• Optical properties: DLC films have a refractive index between 1.5 – 2.3, with less than 1% absorption in the infrared band, resulting in high transmittance.
• Thermal performance: As high thermal conductivity insulators, DLC films can serve as heat dissipation substrates for high-power electrical components, improving device stability.

With these outstanding qualities, DLC films have a broad range of applications in electronics, machinery, optics, and biomedicine. 

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