Optolong Optics Co.,Ltd. is the brand owner of Optolong who is the joint of industry and trade. Optolong has become an integrated enterprise not only specialized in R&D, but also good at manufacturing astronomy filters and fluorescence filters and pushing them into the market. Optolong has its own plant area more than 2000 ㎡. We would keep a high standard to work for our clients!
Optolong is our trademark. We not only have our own brand products-- astronomical filter and fluorescent filter, but also provide the overall solution of filter design, customized processing, proofing and mass production. We are glad to declare that Optolong has become the first and only non-replaceable brand for astronomical filters in China. Optolong brand is also known as the comparable filters with international brand by distributor clients around the world.
Selection Optolong Filters
·Multi-layers anti-reflection coating
·Non-cementing optical substrate coating
·Optolong filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.
·Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.