Qinhuangdao Intrinsic Crystal Technology Co., Ltd.  

Product Name: CVD Znse Dual Focus Lenses Custom-Made Lenses, Optical Lens Model NO.: D5~D300mm Coating: Ar Customized: Customized Certification: RoHS, ISO9001 Lenses Color: Clear Material: CVD Znse Shape: Cylindrical Shaped Lens Transmittance: >95% Type: Cylindrical Dual-Focus Lens Usage: Optical HS Code: 9001909090 Product Description Dual-focus lenses (DFL) are a revolutionary new type of lens for Co2 laser cutting.DFL are intended to be used as a direct replacement for conventional lenses in some industrial laser systems and applications. The basic principal of the lenses coming from their title lies in existence of a couple of focal points. Complex design of these lenses allows to distribute an incident laser energy and deliver its calculated fraction into a secondary (lower) focus.Especially designed to assist in a range of thick-section cutting jobs such lenses give the following advantages:-processing of increased thicknesses at a given power-improved kerf quality-elimination of upper and lower surface dross-immediate cut-initiation-reduced assist-gas usage-improved process controlICC proposed and has been using a novel approach in fabrication of DFL, which in particular did allow us to create DFL of cylindrical shape.SpecificationType of a partCylindrical dual-focus lensmaterialCVD-ZnSeOverall dimensions, mm25.4(+0/-0.25)*25.4(+0-0.25)Thickness, mm4.0(+0.5/-0.0)Radii of curvatureDepend on required combination of EFLEFL tolerance@10.6um,%+/-2Stripe width, mm4(+0.5/-0)Surfaces quality, Scr/dig60/40Surface figure, fringes8AR coating reflectivity per surface@10.6um, %< 0.5 ICC supplies cylindrical DFL with the following EFL combination:127&254mm and 169&254mm. Alternative sizes and custom designs are manufactured upon request.A line of ZnSe cylindrical lenses that are used to focus or expand laser beams for applications such as optical metrology, laser scanning, spectro-scopy, and laser diode systems is available from Laser Research Optics of Providence, Rhode Island.Laser Research CO2 Cylindrical Lenses can be used to focus a laser beam into a thin line or expand the output of a laser diode into a symmetrical beam in one axis only. They are available in 1" and 2" dia. sizes with ±0.005" CT and feature focal lengths from 5" to 30" with ±0.5% tolerance.Offered with A/R coatings that typically provide 0.5% max. reflectance per surface at 10.6 µm and normal AOI, Laser Research CO2Cylindrical Lenses have a 60-40 scratch-dig surface finish and 1 fringe surface accuracy at 633 nm. Centration error on these ZnSe lenses is 5 Arc-mins. max.Laser Research CO2 Cylindrical Lenses are priced according to configuration and quantity. Price quotations are available upon request.