Request InfoECOPTIK (Changchun) Ltd.Plano concave lenses bend parallel input rays so they diverge from one another on the output side of the lens and hence have a negative focal length. The spherical aberration of the plano concave lens is negative and can be used to balance aberrations created by other lenses. Similar to the plano concave lens, the curvature surface usually faces the largest object distance or the infinite conjugate to minimize spherical aberration.See full productRelated content from Photonics MediaPRODUCTSBioPhotonics Jan/Feb 2023 IssueZinc Selenide OpticsHigh-quality zinc selenide (ZnSe) lenses, output couplers, and mirrors from Laser Research Optics are optimized at 1.06 μm for medical laser OEMs. The devices are manufactured to...Photonics.com 3/18/2024CO2 OpticsThe CO2 Laser Lenses from Laser Research Optics are CO2 optics meant for use in the production of precision gaskets manufactured from stainless steel, phenolic, and other hard materials. 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These optics can include lenses, mirrors, prisms, filters, or...Photonics Dictionaryfused quartz and silicaFused quartz and silica are closely related materials, both composed primarily of silicon dioxide (SiO2), but they are produced through different manufacturing processes and have distinct properties...Photonics Dictionaryoptical phase distortionOptical phase distortion refers to a phenomenon where the phase of an optical wavefront is altered as it propagates through a medium. This distortion can result from variations in the refractive...Photonics Dictionarycleaning equipmentIn optics, degreasers or ultrasonic arrangements used for removing pitch, cement or polishing material from lenses during manufacture. 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In simple terms, it is the...Astronomical OpticsCOMPANIESPhotonics Buyers' GuideECOPTIK (Changchun) Ltd.Having Modern Technology Machines ECOPTIK, formerly BRD Optical, was founded in 2004, and is located in the city of Changchun – the optic base of China – with beautiful views and...Photonics Buyers' GuideFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Crystals, Nonlinear Crystals,...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...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,...