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Optical filter
Color glass filter, long pass filter, short pass filter, bandpass filter, ND filter
It's fabricated by special color glass material. the material will absorption some wavelength and appeare different colors. The applications are including camerar filter, machine vision lens filter. There are many types of optical filters, most common types have: color glass filter, long pass filter, short pass filter, bandpass filter, ND filter, and so on.


1. Cut-off type: Block the short wavelength by absorption and transmit the long wavelength.
2. Selective absorption type: Transmission (or absorption) one wavelength (or several wavelengths).
3. Neutral Density type: Similar absorption for the whole visible wavelength range.

Fabrication Capability:
Shape: Rectangle or Round
Dimension: 1mm~200mm
Surface quality: 60-40 commonly, up to 40-20
Flatness: Lambda/4 commonly, up to Lambda/10
Parallelism: < 30", up to 3"
AR coating is available upon request.

 

 

 
 
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