Optical Glass AR Coating & Quality Control FAQ

Yes, at Felix Glass, we can provide detailed test reports for all BK7 and K9 optical glass products, giving you full visibility into the quality and performance of your order.Our test reports include comprehensive information about the parts, including dimensional specifications, surface quality inspection results, and optical performance test data.For standard optical glass parts, we provide a basic test report that includes dimensional verification, surface roughness measurement, and visible light transmittance testing.For custom or high-precision parts, we can provide more detailed reports that include additional test data such as flatness, parallelism, coating thickness, and environmental resistance.For coated optical glass parts, we provide specific coating test reports that include transmittance and reflectance data across the target wavelength range, coating thickness uniformity, and adhesion test results. These reports verify that the coating meets the specified requirements and will perform as expected in your application.All test reports are based on actual measurements taken during our quality control process using calibrated testing equipment such as spectrophotometers, interferometers, and coordinate measuring machines. The reports are signed and dated by our quality team, and include information about the test methods used and the applicable standards.If you have specific test requirements or need to comply with industry or customer standards, we can customize the test reports to include the required information.Providing test reports is part of our commitment to transparency and quality assurance. We want our customers to have full confidence in the quality and performance of our optical glass parts, and our detailed test reports help to achieve that.If you need test reports for your optical glass order, please let us know when placing your order, and our team will provide you with the required documentation.

At Felix Glass, we follow strict quality control standards for all BK7 and K9 optical glass products to ensure consistent quality and reliable performance for our customers. Our quality control process covers every stage of production, from raw material inspection to final product testing.Our quality control standards are based on international specifications, including ISO and DIN standards for optical glass. Before production, all raw materials are inspected for optical and physical properties, including refractive index, dispersion, transmittance, and chemical composition, to ensure they meet the required specifications.During production, we conduct in-process inspections to monitor dimensional accuracy, surface quality, and processing consistency. This includes checking the size, shape, and flatness of the parts using precision measuring equipment such as coordinate measuring machines (CMM) and interferometers. We also inspect the surface finish of the parts to ensure they are free from scratches, pits, and other defects that could affect optical performance.After processing, all optical glass parts undergo a comprehensive final inspection, including dimensional verification, surface quality inspection, and optical performance testing. For coated parts, we also test the coating thickness, uniformity, adhesion, and transmittance/reflectance to ensure they meet the specified requirements.Our optical performance testing includes measuring the visible light transmittance, refractive index, and dispersion of the parts using spectrophotometers and refractometers. We also test the parts for resistance to environmental factors such as temperature and humidity to ensure they maintain their performance under different conditions.All our quality control processes are documented, and we provide detailed inspection reports with each order, including test results and specifications verification. This gives our customers full visibility into the quality of their products and ensures they meet the required standards.At Felix Glass, we are committed to delivering high-quality optical glass parts that meet or exceed our customers' expectations. Our strict quality control standards ensure that every product we manufacture is reliable, consistent, and fit for purpose. If you have specific quality requirements for your project, please contact our team for more information.

At Felix Glass, we offer a comprehensive range of anti-reflective (AR) coating services for BK7 and K9 optical glass parts, tailored to meet the specific wavelength and performance requirements of your applications.Our AR coating services include both single-layer and multi-layer coatings for different spectrums, including visible light (VIS), near-infrared (NIR), and ultraviolet (UV). Single-layer AR coatings are designed for basic applications, providing a moderate reduction in surface reflection and a corresponding increase in light transmittance. Multi-layer AR coatings, on the other hand, are engineered for high-performance applications, offering significantly lower reflectivity and higher transmittance across a broader wavelength range.Our coating process is carried out in a clean room environment using advanced vacuum deposition equipment, ensuring consistent coating quality and uniformity across the entire surface of the optical glass parts. Before coating, all parts undergo a thorough cleaning process to remove contaminants and ensure optimal coating adhesion. After coating, each part is inspected for coating thickness, uniformity, and adhesion to ensure they meet our quality standards.The benefits of AR coating include increased light transmittance, reduced glare and reflection, improved contrast, and enhanced scratch resistance. For example, a multi-layer AR coating can increase the visible light transmittance of BK7 glass from around 91% to over 98%, making it ideal for applications such as camera lenses, microscope objectives, and optical windows.We can customize the AR coating specifications to match your exact requirements, including the target wavelength range, minimum transmittance, and maximum reflectance. Whether you need a standard coating for a common application or a custom coating for a specialized project, we can provide you with a solution that meets your needs.Our experienced engineering team will work with you to understand your application requirements and recommend the most suitable AR coating for your optical glass parts. We also provide coating test reports to verify the performance of the coated parts, giving you confidence in their quality and reliability.If you have any questions about our AR coating services or need help selecting the right coating for your project, please contact our sales team today.