Filter Coating

Filter Coating


Optical Filters are used to selectively transmit or reject a wavelength or range of wavelengths. Optical Filters are used in applications such as fluorescence microscopy, spectroscopy, clinical chemistry, or machine vision inspection. Optical Filters are ideal for life science, imaging, industrial, or defense industries.

Coating Type  Properties and Application 
Filter Neutural Density Filter
(Reflective)
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.
Bandpass Filter 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.
Laser line Interference Filter 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