The surface of glass and other substrates is coated with a narrow band-pass film system in the near-infrared band to achieve high transmission of incident light in specific bands and deep cut-off in other bands. It has the characteristics of high recognition accuracy, strong anti-interference ability and large recognition range.
技术规格
规格
主要技术参数
Central offset（AOI=0-30°）
T90%＜10.5nm, T50%＜11nm
Cut-off depth
Tave OD5，Tmax OD4
High transmission requirement
Tave 96%，Tmin93%
Steepness（T90%-T10%）
＜5.5nm
Transmit bandwidth
17.5-20nm
Central wavelength
≤±2nm
Cosmetic（filter size 5x5mm）
＞30um not allowed，15-30um allow 5 ea，＜15um neglect
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