Coligh is a manufacturer of silicon optical components, providing high-precision, high-performance customized silicon optical solutions.

• Silicon exhibits exceptional physical properties in the infrared wavelength range of 3-5 micrometers, including high transmittance, low coefficient of thermal expansion, extremely high thermal conductivity, and outstanding hardness. Consequently, it finds extensive applications in high-power infrared laser systems, harsh industrial environments, and infrared imaging systems.
• We provide optimal material selection recommendations based on specific application scenarios. Our capabilities include single-point diamond turning, CNC milling and grinding, and ultra-precision polishing techniques. We process aspheric, parabolic, high-precision flat, spherical, and complex-shaped structures.
• We offer high-performance infrared coatings, including infrared anti-reflective coatings, infrared high-reflective coatings, and DLC coatings.
• Every optical component undergoes rigorous quality inspection. We perform 100% full inspection using laser interferometers, profilometers, and spectrophotometers to verify parameters such as form accuracy, surface roughness, radius of curvature, transmittance, and reflectance, ensuring each product meets customized specifications.