Changchun New Industries Optoelectronics Technology Co., Ltd.
Lasers, Optics & Photonics

Home Company Products Career Contact 中文
Spectrum Analysis
Laser Application Systems
Laser Measurement & Safety
Laser Marking
Laboratory Instruments
Optics & Coatings
Components & Accessories
Fiber-Coupled LEDs
Customized Products
Components & Accessories
Laser Diode
Laser Optics
Fiber for Laser Coupling
Beam Expander
AOM and Shutter
Multi-function Optical System
Variable Attenuator
Laser Goggles


Customer Service
TTL or Analog Modulation
Fiber Coupling
Coating Service
Laser Marking Service
Complete Solution
Contact CNI
Tel: +86-431-85603799 / 89216078
國內: 0431-87020257 / 89216068
Fax:    +86-431-87020258
E-mail:  [email protected]


CNI offers the optical filters including dielectric-coated filters, colored glass filters, cut-off filters , notch filters and neutral density filters. And the substrates are optional, including N-BK7, UV fused sllica, K9 and silicon. CNI can offer different kinds of lens upon your requests.

 Notch Filter


Narrow notch filters are used in Raman spectroscopy and instrument amplifiers to reduce or prevent audio feedback, while having little noticeable effect on the rest of the frequency spectrum. Other names include 'band limit filter', 'T-notch filter', 'band-elimination filter' and 'band-reject filter'.


 Cut-off Filter


The cut-off filter has a periodic structure constituted by the high refractive index layer and the low refractive index layer alternately. The main products are long-wavelength pass filter and short-wavelength pass filter. The products we can provide have some characteristics, for instance, spectral performance is very stable and long service life.

 Neutral Density Filter


CNI provide two kinds of variable attenuators for different application, The circular variable attenuator can make the optical density linearly varies around a 0°-270° circle for measuring laser energe farthest. As for the square one, the optical density linearly varies across the length for measuring laser energe.


The thickness of the coating layer is not equal on the lens, and the long wave pass cutoff range shows a gradual change result on the lens. Commonly used in cutoff of grating multistage diffraction light, putting before CCD of optical fiber spectrometer. The quartz substrate was coated by ion sputtering to achieve minimum autofluorescence and high laser damage threshold.
CNI provide standard model size 41.4mm×9.5mm×1mm.

Linear Variable Long Wave Pass Filter (LVLWP)
CNI can offer different kinds of filters upon your requests.



Addr: No.888 Jinhu Road High-tech Zone,Changchun 130103, P.R.China

Tel:+86-431-85603799     Fax:+86-431-87020258     E-mail: [email protected]

双色球在线机选号码 麻将机遥控器 真人裸体麻将 福建11选5中奖窍门 彩库宝典2020最新版下载 850游戏充值破解 广西快乐双彩开奖公布 捕鱼大亨下载电脑 中国体彩7位数开奖结果查询表 app自助领取彩金 北京pk10免费计划群 温州游戏茶苑大厅安装 北京快中彩玩法说明 网络捕鱼有毒啊输死了 江苏7位数开奖20012期 有没有线上打南京麻将的群啊 11选5山东