Our World is Flat™ (585) 271-7300 COMPANY PRODUCTS ONLINE STORE CAPABILITIES RESOURCES CONTACT PRECISION PITCH POLISHING Precision pitch polishing ≥ 3 Å rms surface roughness and 10-5 scratch-dig. Surface Flatness The highly skilled opticians at Sydor Optics have perfected the art and science of conventional pad and pitch polishing, also known as single-sided polishing. While surface flatness over a full clear aperture can be attained down to λ/20 PV, it is possible to reach surface flatness tolerances of λ/40 PV over smaller sub apertures. Surface Roughness Opticians at Sydor Optics have passed down precision polishing techniques from generation to generation. Consequently, Sydor Optics’ proprietary techniques produce precision parts with surface roughness down to 3 Å RMS, ideal for laser applications requiring minimal scatter and maximum performance. Cosmetics Sydor Optics has years of experience producing precision-grade parts with cosmetics (scratch-dig) specifications as tight as 10-5, or as loose as 80-50. No matter the specified tolerance, trained metrology and inspection technicians at Sydor Optics are ready to verify that your parts meet the most rigorous quality guidelines. ABOUT PITCH POLISHING Precision Pitch Polishing Pitch polishing is similar to the double-sided process except that it only polishes optics one side at a time. Sydor Optics frequently uses single-sided polishing machines for wedged optics, light pipes, optical components thicker than 25mm and larger optics up to 750mm in diameter. The single-side process is typically used only if one side of an optical component needs to be polished, or if a part is too large for the double-sided process. Pitch polishing involves significant skill and craftsmanship and can achieve much tighter tolerances for surface flatness, surface roughness, parallelism and cosmetics. Parts typically polished on a pitch table include optical flats and mirror substrates. Notably, the pitch polishing process also minimizes surface deformation on the edge of a part also known as edge roll. Pitch tables are hand poured and have a semi-malleable surface with a consistency similar to roofing tar. Proprietary grooves are hand cut to allow the polishing slurry to flow beneath parts resulting in exceptional surface flatness and surface roughness. Pitch polishing is a non-deterministic trial-and-error process and combines both art and science. The highly-experienced opticians at Sydor Optics have an innate understanding of the optical glass polishing process and can provide consistent, high quality parts. Optical Glass Polishing Manufacturing Limits Specifications Measurements Diameter ≤ 500mm Thickness ≤ 100mm Length / Width ≤ 350mm x 350mm Surface Roughness ≥ 3 Å rms Parallelism ≤ 5 arc seconds Cosmetics (MIL-PRF-13830B) 60-40 to 10-5 Reflected Wavefront Error (RWE) - before coating ≥ 1/20 wave over clear aperture Transmitted Wavefront Error (TWE) - before coating ≥ 1/20 wave over clear aperture Wedge Angle Tolerance ± 5 arc seconds PRECISION CAPABILITIES, FROM MANUFACTURING TO PACKAGING CONTACT US 31 Jetview Drive Rochester, NY 14624 Phone: (585) 271-7300 Hours of Operation: Monday – Friday 8:00am – 5:00pm CONTACT US CERTIFICATIONS & REGISTRATIONS American Owned & Operated ISO 9001:2015 Certified ITAR Registered Military & Defense Supplier DFARS / NIST 800-171 Compliant CMMC Level III Self Certified Thomas Verified Supplier FOLLOW US MEMBERSHIPS & AFFILIATIONS PRIVACY POLICY SITEMAP Developed by Thomas Marketing Services