Request InfoMeller Optics Inc.Available from Meller Optics Inc. are custom sapphire windows that are not affected by caustic fluids such as chlorine and fluorine gas (to 300 °C) and that are second only to diamond in terms of hardness. Manufactured to specification in sizes from 1/4 to 10 in. in diameter and 1/2 mm to 1 in. in thickness, they provide a 270-nm to 4.7-µm transmission range, with up to 85% transmission uncoated and up to 99% with AR coatings on two sides. The windows feature Moh-9 surface hardness and can be fabricated with ±0.05-mm tolerance on thickness, flatness held to 0.5 fringes of HeNe, and...See full productRelated content from Photonics MediaPRODUCTSPhotonics Showcase January 2024 IssueLeader in Diamond-Like CarbonDLC coatings are ideal for Infrared applications with their high refractive index and are recommended for use in harsh environments because of their excellent physical/chemical resistance....Photonics.com 10/3/2023Optical Design SoftwareThe Thinoxide software suite from Thinoxide Software Ltd. is a web-based optical design software that is free to use, providing a graphical implementation of the thin-film transfer-matrix method for...Photonics Showcase September 2022 IssueThin-Film Re-Polishing ServicePG&O’s unique re-polishing service can salvage coated optics that have been damaged or the specifications haven’t been met during the thin-film coating process. 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John Davis of...PHOTONICS DICTIONARY+ TERMSPhotonics Dictionarytransfer blockingA process used to control thickness and parallelism precisely during the production of plane-parallel plates. Elements are cemented to a blocking tool and their upper surfaces are polished. A second...Photonics DictionaryrectificationA technique used in photogrammetry to ensure parallelism during projection printing. Failure to do this will change a rectangular image on a negative into a trapezoidal image on the print.Photonics Dictionarycoated opticsOptical elements that have been coated with one or more layers of dielectric, or metallic material. These coatings serve to reduce or increase reflection from the surface, and to protect the surfaces...Photonics DictionarynarcissusA defect in infrared systems that appears as a dark circular area on a displayed image, caused by radiation reflecting into a detector. 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The film may serve as a reflector, beamsplitter, neutral density filter or electromagnetic interference filter.X-Ray CoatingsCOMPANIESPhotonics Buyers' GuideMeller Optics Inc.Over 100 Years of Excellence Recognized for our custom fabrication capabilities since 1921, Meller Optics has consistently delivered high precision optics for critical applications in the...Photonics Buyers' GuideShanghai Optics Inc.ISO 9001 & ISO 13485 certified and D&B DUNS # 113515303 Shanghai Optics is an unparalleled custom system solution provider offering advance precision custom optical design, engineering,...Photonics Buyers' GuideAvantier Inc.Avantier Inc. is an unparalleled leader in providing innovative imaging systems solutions and optical systems solutions. We offer advance precision custom optical design, optical engineering...Photonics Buyers' GuideLaCroix Precision OpticsThe LaCroix name is synonymous with quality precision optics. Since 1947, three generations of family leadership have guided LaCroix Precision Optics to become the premier precision optics...