Kunming Yulong is a professional manufactures of optical coatings and optical filters processing in China. Our products include Astronomy filters, Camera filter, Optical filter, Laser filters, Band pass filters, Beam splitter, optical mirrors, Cover glass, Optical windows and Anti-reflective coating and so on. Our company was established in 1999, the plant area cover more than 1, 200 square meters and the total investment was more than 2million dollars. We located in Kunming City of China, which is like spring all the year round, China s first optical instrument factory in 1939 is built up here, but now it has become China s most important production base of telescope, precision optical products and infrared Optronics products. Yulong obtained ISO 9001 system certificate since 2005, in September 8th 2006, tested by SGS. We have five precious vacuum coating machines which chamber from 700mm to 1300mm. And a set 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 has many experiences on filters designing and producing. We can design and make various types of filters according to customer requirements. Our main products are as follows: 1. Astronomy filter: UHC, UHC-E, CLS, H-Beta, O-3, H-Alpha, UV-IR Blockers, Skyglow filter, Color filters, UV Lens, Protective glass; 2. Laser filters: Beam splitters/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 bandpass filter, 808nm bandpass optical filter, 850, 880, 905 bandpass filter, Red/Green/Blue filters, Colored filter, visible light filter, Emission filters, UV-IR blocker, IR filter, Long wave pass filters; Short wave pass filters; IR pass filters; UV pass filters; IPL filter, Laser line filters, analytical filters, fluorescence filters, ...... 5. Beam splitters: 70/30, 30/70, 50/50 half mirrors, Non-polarising beam splitters coating, Polarization beam splitter 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 coating; 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. Read the Assessment Report for more information and Click here to download