Kunming Yulong Optics Co., Ltd. is a professional manufactures of optical coatings and optical filters processing in China. Our products include AR coating filters, Bandpass Filters, Edge filters, Longpass Filters, beamspliters and so on. Our company were established in 1999, the plant area cover more than 1,200 square meters and the total investment were more than 2 million dollars. Our factory located in Kunming, Yunnan National Hi-Tech Industrial Development Zone. We had passed the ISO9001 certification. In September 8, 2006 ,tested by SGS, our products completely comply with RoHS standard of the Europe. Also,we are the believable member of Alibaba,which is best B2B web of the world. We have five precious vacuum coating machines which vacuum chamber from 700mm to 1300mm. And two sets of spectrophotometer(UV-VIS-NIR Shimadzu UV3150) which is imported from Japan. And we have complete glass/lens cleaning, processing and inspection equipments,such as Ultrasonic Cleaners with 12 sinks,grinding/cutting machines.Yulong Optics Co. Ltd has much experiences on filters design and producing.We can design and making various types of filters according to customer requirements. Our main products are as follows: 1, Telescope Lens:UHC, UHC-E,CLS,H-Beta,O-III,H-Alpha,UV-IR Blockers, Skyglow filter, Color Filters,UV Lens,Protective Glass; 2,Laser Filters: Beamsplitters/half mirrors, 532/650/808 laser filters,905 narrow bandpass filters,RDM,BDM,GDM Dichroic Coating ,Dichroic Filter, color filters, Windows, Laser bar code identification filters, BG39 Optical glass,cover glass; 3, Camera Lens: UV-cut filter,UV optical filter,UV Lens,MC-UV Lens,Water-proof Lens,High Anti-Reflective Filters; 4, Bandpass Filters: 532 narrow optical filter,650nm band pass filter,808nm bandpass optical filter,850,880,905 Bandpass Filter,Red/Green/Blue filters, Color filter,visible light filter, Emission Filters,UV-IR blocker,IR filter,Long Wave Pass Filters;Long Wave Pass Filters;Short Wave Pass Filters;IR Pass Filters;UV Pass Filters,IPL Filter,laser line filters,analytical filters,fluorescence filters,............ 5,Beamspliters: 70/30,30/70,50/50 half mirrors,Nonpolarising Beam Splitters Coatings,Polarization Beamsplitter Mirror,Beam Splitter plate. 6, Reflective coating:Cold mirror,hot mirror, medium high reflective film, metal / dielectric film with high reflective coating mirror, silver mirror, aluminum mirror; 7,Digital optical filters: IR-Cut Filter,Day&Night Filter, CCD camera filters, Protective windows; 8, Anti-reflective coating:Single Layer MgF2 AR Coatings;Multilayer AR Coatings;Broadband Multilayer AR Coatings;Dual Wavelength Band AR Coatings; Supplying high quality optical products, with competitive price and timely delivery, we have confidence to be your superior and top partner of optics.

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UV Lens uv

850nm Bandpass Filter

Introduce	The 850nm bandpass filter is used in NIR imaging system to eliminate the influence of surrounding background light, including the visible and NIR. This filter is to increase the signal/noise ratio of the imager. The applications include secure monitoring, visual telephone, visual doorbell, digital telescope and other imaging systems.
Substrate	Float glass
Size	2×2mm ~ 81×81mm
Thickness	0.4,0.5,0.7,1.1mm
Surface Quality	40/20，60/40

400-800 nm	T<2%
835±10nm, 895±10nm	T=50%
830-870nm	Tave>85% Tmin>80%
950-1100 nm	Tave<2%