Hong Kong Felix Optical Glass Co., Limited E-mail: james@felixglass.com - Tel: +86 185 6503 2888

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Optical Filters

Optical filters selectively transmit or block specific wavelengths to eliminate stray light, suppress interference and optimize imaging & detection accuracy. Hong Kong Felix Glass Co., Limited manufactures bandpass, IR cut, longpass, shortpass, neutral density, dichroic and custom optical filters on substrates including fused silica, BK7, sapphire and optical glass. We precisely customize center wavelength (CWL), full width half maximum (FWHM), optical density (OD), transmission rate and edge steepness via high-vacuum ion-assisted coating. Filters are widely used for machine vision, biomedical testing, spectroscopy, laser equipment, surveillance cameras, automotive sensing and aerospace optical systems, with full OEM & ODM coating customization service.

Longpass Shortpass Filters

Premium longpass and shortpass optical filters are professional edge cutoff optical components designed for accurate spectral screening. Featuring ultra-sharp wavelength transition, high passband transmittance and deep out-of-band suppression, these edge filters effectively filter stray light and optimize optical system precision. Adopting advanced hard-coated thin-film technology, our spectrum cutoff filters deliver excellent thermal stability, low fatigue and consistent optical performance under long-term industrial working conditions. We provide fully customizable cutoff wavelength, size and coating to meet unique vision detection, spectral analysis and optical instrument requirements. Widely utilized in machine vision imaging, fluorescence detection, biochemical analyzers, optical sensing and scientific laboratory equipment. Felix Glass offers reliable OEM customization, from prototype samples to large-volume mass production.

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IR Cut / IR Pass Filters

Premium IR Cut and IR Pass optical filters control infrared spectrum selectively: IR Cut filters block unwanted IR light to correct color distortion; IR Pass filters isolate infrared wavelength for night vision & thermal sensing. Advanced durable thin-film coating ensures stable transmittance under temperature fluctuation, avoiding performance drift during long-running equipment operation. Full customization on cutoff wavelength, dimension and coating formula available per your optical design. Commonly equipped on automotive lens, security surveillance cameras, machine vision inspection and infrared detection instruments. Felix Glass supplies OEM prototype and bulk mass production with strict pre-shipment QC inspection.

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Sales Director James Fu from Felix Glass, contact info poster for optical glass deep‑processing factory

Learn more from our FAQ

What is your MOQ for custom optical glass and display glass parts?: Felix Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.

Can I get free glass samples for testing before bulk order?: Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.

What is the production lead time for custom optical glass components?: What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?: All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.

Do you offer one-stop custom optical glass processing services?: Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.

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Optical Filters

Longpass Shortpass Filters

IR Cut / IR Pass Filters

A specialist in precision optical glass with 19 years of experience, providing comprehensive, satisfying custom solutions.

A specialist in precision optical glass with 19 years of experience, providing comprehensive, satisfying custom solutions.