About us

KUPO Optics was founded in 1992, aiming at offering the finest quality of optical coatings and filters. Thanks to uncompromising to the product criteria, we have been established an excellent reputation in professional optical filter industry.

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Bandpass Filters

Bandpass filter is the simplest yet and the most economical method to transmit the light with certain wavelength while block the unwanted radiation. 

Bandpass filter is the glass substrate coated with multiple layers of dielectric thin films that interfere the transmission of the light. Currently we have bandpass filter that transmit 365 / 650 / 780 / 850 / 940nm radiation, and are popular in optical inspection and detection.
 
If other type of bandpass filter is required, please contact us for more detail.
 
KUPO Dichroic/ Bandpass Filters

Features

● Perfect piece-to-piece, batch-to-batch consistency
● Great transmission of the required radiation
● Great blocking of unwanted radiation
 

Examples of Applications

● Machine Vision
● Image Sensor
● Automated Optical Inspection
 

General Specification

● Available Substrate: See Glass Substrates under Products Page
● Humidity, Adhesion, and Abrasion: MIL-M-13508C
 
KUPO Dichroic/ Bandpass Filters

Bandpass Filters 365nm

 
KUPO Dichroic/ Bandpass Filters
 
 

Optical Specification

Bandpass 365nm:
300~320nm Tavg<1%
340~370nm Tavg>80%
400~700nm Tavg<1%
 

Bandpass Filters 650nm

 
KUPO Dichroic/ Bandpass Filters
 
 

Optical Specification

Bandpass 650nm:
400~550nm Tavg<3%
620~670nm Tavg>90%
710~800nm Tavg<3%
 

Bandpass Filters 780nm

 
KUPO Dichroic/ Bandpass Filters
 
 

Optical Specification

Bandpass 780nm:
400~740nm Tavg<1%
775~785nm Tavg>85%
820~1100nm Tavg<1.5%
 

Bandpass Filters 850nm

 
KUPO Dichroic/ Bandpass Filters
 
 

Optical Specification

Bandpass 850nm:
400~760nm Tavg<2%
840~860nm Tavg>90%
920~1100nm Tavg<2%
 

Bandpass Filters 940nm

 
KUPO Dichroic/ Bandpass Filters
 
 

Optical Specification

Bandpass 940nm:
400~830nm Tavg<1%
930~950nm Tavg>90%
1050~1100nm Tavg<2%