Dongguan Felix Glass Co., Ltd. E-mail: james@felixglass.com - Tel: +86 185 6503 2888
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How do you ensure optical glass quality?

Update Time:2026/6/6
A:
We build a full-process closed-loop quality control system covering raw material incoming inspection, in-process production monitoring, finished-product testing and pre-shipment recheck to guarantee consistent quality for BK7, fused silica, sapphire, ZnSe, ZnS, AR/AG/AF coated display cover glass and all custom precision optical components, complying with international industrial optical inspection standards for aerospace, medical, automotive sensor, laser and machine vision industries.
 
Before production, our QC team strictly audits incoming optical blank materials by checking internal bubble, impurity, raw material spectral transmittance and material uniformity, eliminating defective substrates to avoid hidden quality risks from the source. During production, every core working procedure including CNC machining, fine grinding, ultra-precision optical polishing and vacuum optical coating is tracked with real-time process inspection. Technicians spot-check dimensional tolerance, edge integrity and surface finish after each working step, timely correcting abnormal processing parameters to prevent batch defective goods.
 
After finishing polishing and functional coating, finished optical glass undergoes comprehensive laboratory testing with professional optical testing equipment. Key inspected items include surface scratch grade, flatness, parallelism, spectral transmittance, coating adhesion and anti-fingerprint performance for AF-coated products. High-spec parts for aerospace and infrared systems will receive extra environmental reliability tests such as temperature shock and humidity resistance to verify long-term stability under harsh working conditions.
 
Prior to packaging and global shipment, our final QC re-inspects appearance and specification one by one again. Any unqualified optical glass will be separated and reworked instead of being delivered. Our systematic multi-stage quality management effectively stabilizes product yield, minimizes defect rate and delivers reliable certified optical glass to worldwide OEM and ODM purchasers.
James Fu, Sales Director of FELIX OPTICAL GLASS, and a poster displaying contact information for an optical glass deep-processing factory.James Fu, Sales Director of FELIX OPTICAL GLASS, and a poster displaying contact information for an optical glass deep-processing factory. 2
Learn more from our FAQ
What is the minimum order quantity for custom precision optical glass components?

FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.

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?

A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?

All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.

Do you offer one-stop custom optical glass processing services?

Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.

CONTACT US NOW FOR A QUOTE
We will respond promptly within 1 to 5 hours and provide an optimal, formal quotation within 1 to 2 days. Partnering with us is the smartest choice—start a mutually beneficial partnership today!
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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.

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