GAOLD manufactures precision optical filters designed to selectively transmit, block or reflect specific wavelengths. Advanced thin-film coatings enable accurate spectral control, high transmission and reliable performance across demanding optical systems.

GAOLD manufactures custom optical filters for demanding imaging, sensing, laser and photonics applications. With expertise in optical substrates, thin-film coatings and precision processing, we support application-specific requirements for wavelength control, transmission, blocking and dimensional accuracy. From prototypes to repeat production, our manufacturing capabilities provide reliable solutions for your optical systems.

Every filter starts with a defined spectral target. GAOLD works from center wavelength, bandwidth, transmission, blocking and angle-of-incidence requirements to develop a manufacturable solution. Substrate, coating structure and mechanical specifications are evaluated together for performance and production feasibility.

Precision substrate preparation and multilayer thin-film deposition are controlled throughout production to achieve the required transmission, reflection, blocking and spectral edge performance.

Optical performance is verified through spectral measurement and dimensional inspection before release. Process controls help maintain repeatability across prototypes and production batches, while inspection data confirms that wavelength position, passband transmission, blocking performance and mechanical dimensions remain within specified requirements for each project.

GAOLD provides flexible customization for optical filters used in different systems and operating conditions. Customers can specify spectral response, optical density, angle of incidence, substrate, dimensions and environmental needs. Our team evaluates these parameters together to develop a filter solution matched to the application and manufacturing requirements.