Optical Domes FAQs

Our optical domes are designed with hierarchical scratch resistance solutions according to different application environments, meeting the wear and impact protection needs of various harsh scenarios. Sapphire optical domes are the highest grade in scratch resistance, with Mohs hardness up to 9, second only to diamond. It has super strong anti-scratch, anti-abrasion, high temperature resistance and chemical corrosion resistance, not easy to be scratched by sand, dust and hard foreign objects in long-term outdoor, underwater and aerospace environments, maintaining long-term surface finish and clear imaging effect. For conventional BK7/K9 optical glass domes, we can deposit high-performance DLC diamond-like carbon coating on the polished surface. The DLC coating has ultra-high surface hardness, effectively improving scratch resistance, friction resistance and anti-fouling ability, avoiding daily wear and surface scratches affecting optical transmittance. In addition, we can match hydrophobic and anti-fog coating on the basis of scratch resistance, making the optical dome surface waterproof, oil-proof, not easy to adhere dust and water mist, reducing manual cleaning and maintenance frequency. Felix Glass can recommend the most suitable material and coating scratch resistance solution according to your installation environment, working temperature and service life requirements, ensuring the optical domes maintain stable performance for years of continuous operation.

Yes, we are a professional manufacturer fully capable of providing full-size and full-parameter customized optical domes for global customers, covering prototype small-batch trial production to large-scale mass stable supply. We can customize all core parameters of optical domes, including outer diameter, inner diameter, uniform or tapered wall thickness, spherical curvature radius and concentricity accuracy. We support various edge processing methods such as flat mouth, chamfer, rounding and special-shaped mounting structure, and can process strictly in accordance with customer CAD drawings, PDF technical specifications or physical sample copying requirements. We adopt high-precision CNC grinding equipment and ultra-precision polishing technology to strictly control dimensional tolerance, surface quality and optical performance of each customized optical dome. Optional materials include BK7/K9 optical glass, synthetic sapphire and fused silica, matched with multi-layer AR anti-reflective, IR infrared, DLC wear-resistant and hydrophobic anti-fog coatings according to working wavelength and application environment. Our professional optical engineering team can also provide design optimization suggestions for your structural parameters, helping you balance optical performance, mechanical strength and cost budget. All customized optical domes implement full-process quality inspection, provide inspection reports and qualification certificates, and support stable long-term order delivery for overseas importers, engineering companies and optical equipment manufacturers.

There are essential differences in raw material composition, production process, optical performance and application scenarios between professional optical domes and ordinary glass. Ordinary glass mostly adopts common soda-lime raw materials, containing a large number of internal impurities, bubbles, stripes and uneven material density. Its light transmittance is low, optical distortion is serious, dimensional tolerance is loose, and it cannot bear precise optical matching and thin-film coating process, only suitable for building doors, windows and simple isolation protection, absolutely unable to meet the requirements of precision imaging and photoelectric sensing equipment. In contrast, Felix Glass optical domes use high-purity optical grade raw materials with strict material sorting and fine annealing treatment to eliminate internal stress. After ultra-precision grinding and high-precision surface polishing, the surface reaches high scratch-dig grade with ultra-smooth roughness, achieving ultra-high light transmittance, excellent optical uniformity and extremely low imaging distortion. Meanwhile, optical domes have stable physical and chemical properties, strong temperature shock resistance and corrosion resistance, and can perfectly match various professional optical coatings such as AR, IR and DLC. For high-end surveillance cameras, underwater detection systems, aerospace photoelectric pods and industrial machine vision equipment, only professional optical domes can ensure long-term stable and clear optical performance, while ordinary glass will cause image deformation, light scattering and equipment failure in a short time.

Professional optical domes are core precision optical protective components widely deployed across global industries including security surveillance, underwater marine engineering, aerospace defense, industrial machine vision and medical optoelectronic equipment. Manufactured from high-purity BK7/K9 optical glass, synthetic sapphire and fused silica raw materials, our optical domes feature ultra-high visible and infrared light transmittance, excellent optical uniformity and minimal wavefront distortion. The streamlined spherical structure can effectively isolate external interference such as dust, rain, snow, sand, moisture and mechanical impact, ensuring the internal optical lens and sensor maintain stable, high-definition imaging performance in long-term outdoor and harsh working environments. At Felix Glass, every optical dome is processed by ultra-precision surface polishing, strict annealing treatment and multi-layer optical coating customization. We support AR anti-reflective coating, IR infrared coating, DLC wear-resistant coating and hydrophobic anti-fog coating, greatly improving light transmittance, scratch resistance and environmental adaptability. Whether for standard commercial monitoring equipment or high-end customized aerospace optical systems, our optical domes can provide reliable long-term protective solutions.