Global Custom Optical Components FAQ Center

A: We adopt dedicated protective packaging solutions for precision optical components to avoid scratches, chipping, contamination and shock damage during transit, especially for international sea or air shipment.For small optical windows, lenses and filter chips: Each piece is individually sealed in cleanroom anti-static PE bag or lens tissue, then placed into custom-cut EVA / PU foam trays. The foam holds each optical part separately to eliminate surface friction and collision. For large panels, display cover glass and optical domes: We use interleaving protective paper between glass surfaces, surrounded by shock absorbing foam, then packed into rigid export cartons. Heavy or high-value sapphire parts can be packed in plywood cases upon request.All packaging materials are low-dust and non-abrasive, which will not leave residues or scratch polished optical surfaces. We mark fragile / upward handling warning labels clearly on outer packages. We can also provide custom branded packaging or special vacuum packaging if required by your project.Before shipment, our QC team will inspect package integrity. Our packaging has proven reliable for long overseas transport to North America, Europe and Southeast Asia. If you have special packaging requirements for cleanroom receiving or customs identification, please notify us at the RFQ stage.Our protective packaging is designed for our precision optical windows, optical domes and optical lenses during overseas shipment.

Felix Glass specializes in custom precision optical glass components and tempered cover glass for industrial and optical systems. Our main product portfolio covers optical windows, optical domes, optical lenses, optical filters, automotive & industrial touch display cover glass and solar CSP reflector mirrors.For optical windows, we fabricate parts from BK7, fused silica, sapphire and aluminosilicate glass. These windows can be cut, drilled, chamfered, polished and coated for UV, visible or infrared optical systems. We manufacture optical domes including sapphire domes and glass domes for underwater ROV, marine monitoring and harsh-environment protective viewports. Our optical lenses cover plano-convex, plano-concave and custom shaped lenses for machine vision, sensing and measurement instruments. We also supply optical filters, AR/AG/AF coated tempered display cover glass and high-reflection solar mirror glass.All components are built according to customer 2D/3D drawings and optical specifications. We support CNC machining, edge finishing, thin-film coating, silk-screen marking and full optical inspection. Our products are widely used in machine vision, medical devices, marine monitoring, automotive displays, UV laser equipment and solar energy systems. If you have custom optical requirements, send your drawing and specs for quotation.Our main custom optical parts include optical windows, optical domes, optical lenses and optical filters. You may submit your drawings to our Request Quote page for detailed technical evaluation.

A:Yes, Felix Glass is fully capable of supplying matched optical components designed and manufactured specifically for harsh UV exposure, outdoor open-air deployment, marine coastal salt-spray environments and continuous high-temperature operating scenarios. We fully understand that optical parts working under these extreme conditions face multiple risks including UV photo-degradation, salt fog corrosion, thermal expansion stress, temperature cycling fatigue, moisture penetration and surface abrasion, so our material selection and coating design will be customized according to customers’ actual working parameters.For UV-heavy environments, we choose high-transmittance fused silica glass instead of regular soda-lime glass, which features excellent UV spectral transmission and strong resistance against UV aging and yellowing over long service cycles. For marine and coastal applications, we adopt multi-layer waterproof and anti-corrosion coating stacks, plus strengthened edge sealing treatment, to block salt mist, humidity and chloride ion erosion. This anti-salt-fog treatment can pass standardized salt spray aging testing to guarantee stable optical performance in offshore, shipboard and seaside equipment.For high-temperature working environments, we select low thermal expansion substrates such as fused silica or borosilicate glass. These materials minimize thermal deformation and optical distortion when temperature rises, maintaining consistent optical performance without bending, cracking or coating peeling. We also provide enhanced tempered glass options for outdoor industrial and automotive display applications, with high mechanical impact resistance.Our engineering team will first collect your detailed environmental parameters including working temperature range, UV wavelength band, humidity level, salt exposure grade and expected service lifetime, then recommend the most suitable glass substrate, coating type and edge protection solution. Before mass production, we can deliver prototype samples for environmental aging tests such as thermal cycling, salt spray, UV accelerated aging and damp heat testing. All finished optical components will go through full optical inspection and mechanical quality checks before shipment. We can also support third-party verification according to your project requirements. Whether for marine monitoring optical windows, high-temperature industrial optical sensors or outdoor UV optical instruments, Felix Glass can provide fully matched optical components with reliable long-term performance.Our sapphire optical domes and fused silica optical windows are widely used in marine, UV and high-temperature harsh environments.

A: Once you submit your complete requirements including 2D/3D drawings, dimension tolerances, optical specifications, coating requirements, target working environment, order quantity and delivery schedule, our optical engineering and sales team will start assessment immediately. For most standard custom optical glass projects, our team will finish reviewing your technical specifications and release a preliminary customized technical solution within 1 working day. The technical document will cover recommended glass substrate material, coating options, machining plan, achievable tolerance range, surface quality grade and feasibility risk notes.After the technical scheme is confirmed, our costing department will calculate raw material cost, CNC processing expense, coating manufacturing cost, inspection cost and packaging cost. A complete formal commercial quotation will normally be ready and sent to you within 1 to 2 working days. If your project involves ultra-precision tolerances, special customized coating, sapphire material or very complex non-standard shape processing, we may need additional time for deeper technical evaluation, and we will notify you of the timeline at the first time.If you only have conceptual ideas without finished drawings, our optical design engineers can also assist you to sort out key optical parameters and create preliminary design sketches, which usually takes 2 to 3 working days. We keep transparent communication during the whole assessment period. If any technical limitation or cost optimization suggestion appears, we will communicate proactively rather than delay the quotation.For urgent prototype orders, we provide priority technical review service. After technical confirmation, we can also arrange fast-track sample production to shorten your project development cycle. Our whole workflow is built to help customers reduce waiting time in the early development stage, accelerate prototype validation and push mass production schedule smoothly. From small single-piece prototypes to large-volume OEM bulk orders, we maintain this standardized response workflow for every inquiry.Please send your drawings and specs via our Request Quote page to start your quotation process.

A: Yes, Felix Glass fully accepts third-party quality inspection for OEM bulk optical component orders, and we are familiar with international third-party inspection standards widely used in optical and glass manufacturing industries. We understand that many industrial customers, automotive suppliers and energy equipment manufacturers require independent verification to eliminate quality risks before goods leave factory, so we support and actively cooperate with your designated third-party inspection institutions.The third-party inspection can be arranged at our factory before shipment. The inspection scope can be fully customized as your requirement, covering dimension tolerance measurement, optical performance testing including transmittance, reflectivity, coating uniformity and spectral curve test, surface defect inspection for scratches, digs and bubbles, coating adhesion test, hardness test and packaging integrity check. We will provide all necessary testing tools, measuring equipment and professional on-site technical support for your inspectors during the whole inspection process.Before the inspection date, our quality control team will finish our full in-house pre-inspection. We will sort finished optical components, prepare batch inspection reports, material certificates and coating test records in advance for the third-party auditors. If the third party finds any non-conforming items during inspection, our QC team will handle rework, replacement or sorting immediately on site according to your agreed quality standards.We accept famous independent inspection agencies, or your own on-site quality representatives. All inspection rules, acceptance criteria and sampling plans can be agreed and written into our sales contract before production starts. This transparent inspection mechanism guarantees that the bulk optical products you receive fully match your drawing and specification requirements. Whether it is automotive display tempered glass panels, optical windows, coated optical substrates or solar reflector mirror glass, all bulk OEM orders support third-party inspection service.Third-party inspection service is available for bulk orders of our optical windows and optical domes.

A: Yes, Felix Glass is capable of meeting ultra-tight dimensional tolerance requirements for precision optical components, supported by our advanced CNC optical glass processing workshop and professional precision measurement lab. Our factory is equipped with high-precision CNC cutting machines, 5-axis grinding equipment, ultra-precision drilling and chamfering machines, together with optical measuring instruments, digital micrometers and profile projectors for full dimension verification.For common optical glass substrates such as BK7, fused silica, aluminosilicate glass and sapphire, we can achieve different tolerance grades based on your project demand. For conventional custom glass panels, we normally hold tolerance at ±0.1mm. For high-precision optical components requiring ultra-tight control, we can reach tolerance down to ±0.02mm on key dimensions. For hole position, edge chamfer and thickness parameters, we can also provide micron-level precision for critical optical surfaces after technical evaluation.We want to clarify that the achievable tolerance also relates to material type, glass thickness, part shape and feature size. For example, thin large-size glass panels and special curved optical elements will have different processing limits. Our optical engineers will evaluate your drawings at the inquiry stage, clearly mark which dimensions can meet your ultra-tight tolerance requirement, point out potential manufacturing limits and propose reasonable optimization suggestions if needed.During production, every batch will go through first article inspection(FAI). The first sample will be fully measured and dimensionally verified before mass processing starts. In-process sampling inspection is implemented through the whole production flow, and 100% final dimension check will be applied on critical ultra-precision parts. We will attach dimension inspection reports together with delivery documents. Our precision machining capability serves industries including optical sensing, medical equipment, automotive display and industrial measurement instruments that require strict geometric accuracy for optical elements.Our high-precision CNC machining is used for manufacturing optical windows and optical domes with strict tolerance demands.

A: Absolutely. Felix Glass owns an experienced in-house optical engineering team who can provide complete professional custom optical design support from concept phase to final mass production. Our engineers have deep knowledge of optical glass materials, thin-film coating theory, optical transmission & reflection principle, glass machining and optical system matching. We can cooperate closely with your R&D team to solve optical challenges in your equipment design.Our custom optical design service covers multiple aspects. First, material selection consultation: we help you pick the optimal glass substrate among soda-lime glass, aluminosilicate, BK7, fused silica, sapphire and other optical materials according to your working wavelength, temperature environment, mechanical strength requirement and budget. Second, functional coating design: our team designs AR anti-reflection, AG anti-glare, AF anti-fingerprint, high-reflection silver coating and other thin-film coatings, calculating spectral performance to reach your target transmittance or reflectivity.We also carry out optical structure optimization, including shape design, edge treatment, thickness matching and bonding surface design for touch display cover glass, optical windows and optical mirrors. If you only have rough product ideas instead of mature drawings, our engineers can turn your optical performance goals into feasible manufacturing drawings and parameter specifications. We can simulate optical performance and predict possible risks like reflection loss, glare, thermal stress and coating failure in advance.After the design is finalized, we will produce prototype samples for your optical testing. We can adjust coating formula or machining parameters based on your test feedback to continuously optimize optical performance. Our optical design service is widely applied in automotive display optics, industrial HMI touch panels, solar CSP reflector systems, medical optical windows and industrial sensor optical components. We support both small prototype R&D projects and large-volume mass production projects, delivering integrated optical design + precision manufacturing service.Our design service covers optical windows, optical domes and display cover glass for various industrial projects.

A: Felix Glass custom optical glass and optical components are widely adopted in multiple mainstream industrial fields worldwide. Our core application sectors cover automotive electronics, industrial automation & HMI human-machine interface, medical diagnostic equipment, concentrated solar power (CSP) energy industry, outdoor monitoring & security cameras, precision measuring instruments and aerospace auxiliary optical systems.In the automotive industry, our main products are custom tempered display cover glass for dashboard screens, central control touch displays and rear-seat entertainment panels. We supply AR/AG/AF coated glass panels with anti-glare and sunlight readable performance, meeting vehicle-grade temperature cycling and vibration reliability standards.For industrial automation field, our optical glass covers industrial touch monitors, machine human interface panels, factory automation control screens and industrial sensor optical windows. The tempered glass offers scratch resistance and impact resistance to adapt workshop dusty, vibration and wide temperature fluctuation environments.In medical device industry, we produce high-transmittance optical glass windows for medical touch terminals, diagnostic instruments and medical imaging equipment. The glass material is low-fluorescence, easy to sanitize and stable under repeated disinfection.Solar energy and CSP concentrated solar power is another key field. Our high-reflectivity silver coated solar mirror glass acts as the core reflector for heliostats and solar thermal collection systems, with high solar spectrum reflectivity and excellent outdoor weather resistance.Besides above, our optical components are also used for outdoor security monitoring optical windows, analytical & precision optical measuring instruments, and low-risk aerospace auxiliary optical parts. For each industry, our team adjusts material grade, coating formula, mechanical processing standard and quality inspection rules to match the unique industry certification and reliability requirements. Whether you need small R&D prototype or large-volume OEM supply, Felix Glass can deliver optical components tailored to your industry application scenarios.Browse our optical windows and optical domes product pages to see industry application details.

A: Felix Glass adopts strict full-process quality management system to guarantee stable optical quality for all finished optical components, covering raw material incoming inspection, production in-process monitoring, post-coating optical testing, final visual inspection and sampling reliability aging test. Every link has standardized inspection procedures and recorded quality logs.First of all, raw material incoming inspection. All glass substrates including fused silica, BK7, aluminosilicate, sapphire and low-iron solar glass will be inspected before entering production. We check material spectral property, internal bubble & striae, flatness and thickness uniformity. Unqualified raw glass sheets will be rejected directly to avoid defects carried into finished parts.During machining process, we implement first article inspection for every production batch. After CNC cutting, grinding, drilling and polishing, the first sample is fully measured for dimension, edge quality and surface defects. Production operators and QC inspectors carry out regular in-line sampling inspection to catch scratches, chipping or dimension drift at early stage.For coated optical products, this is the key optical quality control point. After AR, AG, AF or silver reflective coating deposition, we test each batch sample with professional spectrophotometers to verify transmittance, reflectivity and coating uniformity. We also run coating adhesion test and abrasion test to ensure coating will not peel or degrade during service.Before packing and shipment, 100% visual surface inspection is performed for critical optical surfaces to screen digs, scratches and contamination. Random sampling will be selected for accelerated aging tests such as thermal cycling, damp heat and salt spray according to customer requirements. All test data and inspection records are archived for batch traceability.We maintain calibrated optical testing instruments regularly to ensure measurement accuracy. Our quality team will issue official batch inspection certificates together with goods. If you require, we support third-party witness inspection. This complete multi-layer quality control workflow keeps consistent optical performance batch after batch, avoiding optical parameter fluctuation for your mass OEM orders.All our optical windows, lenses and domes go through this complete QC workflow before shipment.

A: The standard production lead time for custom optical components at Felix Glass is separated into prototype sample phase and mass production phase, and the exact schedule depends on material selection, machining complexity, coating requirement, tolerance level and total order quantity.For prototype / single-piece small batch samples: simple tempered display glass panels without special coating normally take 7 to 10 working days. If your samples require AR/AG/AF functional coating, sapphire substrate, ultra-precision tight tolerance or complex non-standard shape, the prototype lead time will extend to 10–15 working days. Lead time starts counting after drawings, specifications are fully confirmed and pre-production sample payment is received. We will inform you in advance if any special raw material needs procurement, which may add extra waiting time.For mass production bulk OEM orders: common tempered display glass and standard coated optical windows normally take 15–20 working days after sample approval. Complex optical components with multi-layer coating, sapphire parts, ultra-precision machining or large-size solar mirror glass will take 20–30 working days. For extremely large orders with high volume, we will discuss a phased delivery schedule to meet your inventory and assembly plan.We also offer expedited fast-track production service for urgent projects upon request. Fast orders will be arranged with priority scheduling, but capacity availability needs to be checked before confirmation. It is important to note that lead time excludes international sea/air shipping transit time. After production is finished, we will arrange secure packaging and hand over cargo to your freight forwarder or our recommended logistics provider. Our sales team will update production progress regularly during manufacturing and notify you once goods are ready for shipment.Check our optical windows and optical domes product pages to see typical production scope for custom glass components.

A: Yes, Felix Glass fully supports single-piece prototype and small-batch optical component orders. We understand that most industrial and optical customers need prototype samples for product R&D, optical performance testing, structural assembly verification and reliability validation before launching large-volume mass production. Therefore we keep flexible MOQ policy and welcome one-off piece or small batch custom optical orders.Whether you need a single piece of AR coated display tempered glass, BK7 optical window, fused silica UV optical component, sapphire protective window or solar mirror prototype, we can process it according to your drawings and specifications. Our production workshop reserves dedicated small-run production line for prototype manufacturing, so small orders will not be squeezed out by bulk mass orders.The price of prototype samples will be different from mass unit price, because small batches share higher setup cost including CNC tooling preparation, coating chamber setup and inspection programming. We will clearly separate sample quotation and mass production quotation for your reference. Once your prototype testing is passed and you place formal bulk OEM order, we can negotiate sample cost refund policy based on total order volume.After prototype sample manufacturing, we can provide testing reports of dimension, optical performance and surface quality together with samples. If you need to modify optical parameters, coating formula or part shape after testing feedback, our engineering team can quickly revise the design and produce revised samples. Our service covers R&D prototype stage all the way to full mass production handover. We serve startups, R&D institutes and large enterprise innovation departments who require iterative optical component verification with small quantity orders.We accept prototype orders for optical windows, optical domes and custom optical lenses for your R&D testing.

A: AR coating, short for Anti-Reflection coating, is a widely used functional thin-film coating applied on optical glass surface, and it is one of Felix Glass’s core coating capabilities. The main function of AR coating is to reduce unwanted light reflection at air-glass interface, increase light transmittance and remove disturbing ghost reflection and glare.When light passes from air into bare glass surface, part of light will be reflected back. This reflected light causes screen reflection, reduces image clarity and wastes light energy. AR coating stacks multiple layers of optical thin films to offset reflected light through light interference principle, minimizing surface reflectivity. For automotive and industrial display cover glass, AR coating greatly improves screen readability under strong sunlight. Without AR coating, bright outdoor environment will create heavy mirror reflection on display surface and make screen content hard to read. With proper AR coating, the display keeps clear view even under direct sunlight.For optical windows and optical lenses, AR coating raises total light throughput of the optical system, reduces light loss and improves signal strength for optical sensors. AR coating can be customized for different target wavelength bands, covering visible light band for display screens, near-infrared band for optical sensing or UV band for ultraviolet optical instruments.Combined with AF anti-fingerprint overcoat, AR coated glass can achieve both high optical transmittance and easy-clean surface. Our AR coating has strong adhesion, good scratch resistance and stable performance under temperature cycling and outdoor aging environment. AR coated tempered glass cover is widely used in automotive dashboard displays, industrial HMI touch monitors, outdoor smart screens, medical optical windows and various precision optical components.Our AR coated optical windows and coated display glass are widely used for outdoor and industrial optical equipment.

A: Felix Glass provides a full portfolio of functional thin-film coatings for optical glass and display cover glass, including AR anti-reflection coating, AG anti-glare coating, AF anti-fingerprint coating and high-reflection silver coating for solar mirrors. We also support custom coating development for special optical spectrum requirements.AR (Anti-Reflection Coating): Reduce surface reflection and boost light transmittance. Mainly applied for automotive and industrial display glass, optical windows. We can tune AR coating for visible, near-infrared or UV wavelength bands to match your optical system requirement. It greatly improves sunlight readability for touch display panels.AG (Anti-Glare Coating): Diffuse reflected light to eliminate sharp mirror-like glare. AG treatment scatters ambient reflection, so users will not see clear environmental reflection on screen surface. It is popular for industrial HMI and automotive touch displays to protect eyesight and improve touch operation experience.AF (Anti-Fingerprint Coating): Oleophobic and hydrophobic nano coating on glass top surface. It repels oil, water and fingerprint residues. Fingerprint marks can be wiped away easily, keeping glass surface clean for touch screen operations. AF coating is usually combined with AR or AG coating as top layer.High-reflective silver coating: This coating system is designed for solar CSP mirror glass. It achieves ≥95% high reflectivity across solar spectrum, equipped with copper barrier layer and multi-layer protective waterproof coating to resist outdoor weathering and corrosion for long service life in solar power plants.Except these standard coating types, our thin-film team can also develop customized coating stacks for special projects, such as IR cut coating, band pass coating or low-reflection coating for specific wavelength requirements. All coatings go through strict adhesion test, abrasion test and aging reliability test before delivery. We will recommend the most suitable coating combination after learning your application environment and optical targets.View our AR coated optical windows to learn more about our thin-film coating application on finished optical substrates.Optical coating solutions: Optical Coatings

A: Yes, Felix Glass supports full OEM and ODM customization service for optical glass components and tempered display cover glass. We can realize customized manufacturing according to your finished product requirements, covering ODM design collaboration and OEM production based on your drawings & specifications.For OEM service: You provide 2D/3D drawings, dimension tolerances, optical requirements, coating specification and quality acceptance criteria. We follow your technical document to select glass substrate, carry out CNC cutting, edge polishing, drilling, chamfering, functional coating, silk-screen logo printing and full inspection. We can print your brand logo, part number or marking directly on glass surface. The finished products are manufactured under your specification and can be shipped with neutral packaging or custom branded packaging as requested.For ODM service: If you have application goals but no finalized drawing, our optical engineering team will work with you from product concept stage. We help select glass material, design optical coating, optimize mechanical structure and propose manufacturing solution. We will produce prototypes for your testing, revise design based on your feedback, and finally move to mass production.Customizable items include glass material grade, glass thickness, overall dimension, irregular shape, hole position, edge finish type, AR/AG/AF or reflective coating, silk printing, surface quality grade and packaging method. We support customized batch size from R&D single prototype to large-volume mass production. Our OEM/ODM service covers automotive display glass, industrial touch cover glass, solar mirror glass, optical windows and other optical components. All customized products will be tracked with independent batch records, and we can issue material certificates and inspection reports for every shipment.We provide OEM & ODM manufacturing for optical windows, optical domes and display cover glass according to your drawings.Custom engineering support: Custom Optical Solutions