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One stop optical component service provider

Coating expert

Nanjing Epax Optics Co., Ltd. was established in 2016 and is a national science and technology enterprise and a provincial high-tech enterprise. It mainly produces various high-end filters, window plates, reflectors, spectrometers, and prisms. The company currently has 120 employees and owns over 12000 square meters of factory space. With high-precision cold processing technology, advanced coating technology, and high-end testing equipment as the core competitiveness, we deeply integrate into the global advanced manufacturing industry. Provide customized solutions for optical products with high quality, precision, and reliability to global customers. At present, the service industry covers laser, medical, intelligent digital, projection display, aerospace, infrared imaging, domestic and surgical research institutes and universities, etc

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Processing Flow

Optical raw material cutting

Development of grinding tools

Rough grinding

Fine grinding

Polishing

Edge grinding

Coating

Glue

Inspection - Packaging

Optical raw material cutting

According to the design parameters, high-precision laser cutting equipment is used to accurately cut optical materials (such as glass and crystals), ensuring that the flatness error of the cutting surface is ≤ 0.01mm, laying a solid foundation for subsequent processing. MORE

Development of grinding tools

Customize exclusive grinding tools based on product characteristics, optimize mold structure through computer simulation, ensure wear resistance and adaptability, and provide stable support for rough and fine grinding processes. MORE

Rough grinding

By using a CNC grinder to regulate the grinding pressure and speed, combined with high-strength grinding materials to quickly remove excess material, the surface roughness is initially reduced to Ra 1.6 μ m, forming a basic contour. MORE

Fine grinding

Using finer abrasives and polishing pads, the surface of the component is processed in stages at the micrometer level to accurately correct curvature errors, resulting in a surface roughness of Ra 0.4 μ m, close to mirror effect. MORE

Polishing

By using nanoscale polishing solution and high-speed polishing equipment, surface scratches and subsurface damage are eliminated through chemical mechanical synergy, ultimately achieving an optical grade mirror effect with a surface roughness of ≤ Ra 0.1 μ m. MORE

Edge grinding

Using a CNC edge grinder to chamfer and invert the edges of components, controlling the dimensional tolerance within ± 0.02mm, can prevent stress concentration and improve assembly adaptability. MORE

Coating

By using magnetron sputtering or ion assisted coating technology, multiple layers of optical thin films are deposited on the surface of the component, and the film thickness and refractive index are precisely controlled to achieve specific optical properties such as anti reflection, reflection, and spectroscopy. MORE

Glue

Using optical grade adhesive to precisely bond multiple components, eliminating bubbles and stress through vacuum pressure curing process, ensuring optical uniformity of the bonding surface, and thereby improving the overall performance of the components. MORE

Inspection - Packaging

Using interferometers, spectrometers, and other equipment to perform full parameter testing on finished products, covering indicators such as surface shape accuracy, transmittance, and damage threshold; After passing the inspection, use anti-static and shockproof packaging materials to ensure that the components are not damaged during transportation and storage. MORE

Industry News

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  • 2025-12-08

    Our company will participate in the 2026 Asia Optoelectronics Exhibition (APE)

  • 2025-08-01

    Elite team supports full chain services

  • 2025-08-01

    Combining advanced equipment with refined management

  • 2025-08-01

    Nanjing Epax Optical Ultra Low Anti reflective Film Shows Stable Performance

  • 2025-06-10

    The company has established an intelligent control system covering the entire industry chain from research and development to delivery

  • 2024-12-10

    Corporate Values

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