滤光膜层

滤光膜层


滤光片可用来选择性地透射或截止某个波长或波长范围。

镀膜类型 性能和应用
滤光膜层 反射型中性密度片 Reflective ND filters consist of thin film optical coatings, typically metallic, that have been applied to a glass substrate. The coating can be optimized for specific wavelength ranges such as UV-VIS or NIR. The thin film coating primarily reflects light back toward the source.
带通滤光膜层 Bandpass filters are optical elements that are designed to transmit a specific spectral band with high efficiency, while reject others. The characteristics of the bandpass are controlled by multilayer dielectric coatings.
激光干涉膜层 Laser line filters are narrow bandpass filters centered on the resonance of the laser, which attenuate the background plasma and secondary emissions that often result in erroneous signals.

Neutural Density Filter (Reflective) Coating

 

 

OD=0.3 @ VISIBLE
 

Bandpass Filter Coating
 

 

 

Tavg<0.1% @ 300nm~600nm & 730nm~1100nm T>80% @ 650nm~680nm AOI=0Deg
 

 

IPL (Intense Pulsed Light) Filter Coating
 

 

Tavg<0.5% @ 190nm~250nm Tavg>93% @ 285nm~800nm AOI=0Deg
 

IR Cut Filter Coating

 


 

Tavg>93% @ 420-620nm & Tavg<1%@700nm~1100nm T=50%@650±7nm AOI=0Deg
 

Laser line Interference Filter
 

 

CWL=650nm±3nm T>80% FWHW=15nm±3nm, AOI=0DEG
 

 

Notch Filter
 

 

T>93% @ 420nm~485nm & 570nm~700nm R>98% @ 520nm~540nm AOI=0Deg