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Inside Filters

From Edmund Optics Inc.
 

 

Filters can be used to attenuate light either evenly across a certain portion of the spectrum (neutral density, polarizing, retarders, etc.) or unevenly (ie. Interference, dichroic, color). Typical applications for filters involve improving contrast or signal-to-noise ratio (imaging and non-imaging), isolating particular wavelengths (analytical chemistry and spectroscopy), and improving lens performance (usually imaging).


Product Announcements
Dontech Incorporated - Colored Optical Filters
Dontech colored filters provide contrast enhancement for monochrome displays and are used to improve contrast and performance of optical scanners and LEDs and LCDs. (read more)
Dontech Incorporated -  Color Selective Bandpass Filters
Dontech colored filters provide contrast enhancement for monochrome displays and are used to improve contrast and performance of optical scanners and LEDs and LCDs. (read more)
Edmund Optics Inc. - Non-reflective Neutral Density Filters
Prevent Unwanted Reflection Towards the Light Source Spectrally Flat VIS and NIR Ranges Available... (read more)
ARW Optical Corporation - Coatings
ARW Optical offers standard and custom-designed coatings for all UV-IR applications. (read more)
Hamamatsu Corporation USA - Solid State Division
Hamamatsu designs and manufactures a wide range of solid state detectors, imaging chips and light sources. The range of materials from which our products are made include Silicon (Si), Indium Gallium... (read more)
 

Topics of Interest
Filters can be used to attenuate light either evenly across a certain portion of the spectrum (neutral density, polarizing, retarders, etc.) or unevenly (ie. interference, dichroic, color). Typical... (Read More)
John W. McMurdy, Gregory P. Crawford and Selim Suner We have all the light we need, we just need to put it in practice. Albert Pike Biomedical spectroscopy and imaging are tools heavily... (Read More)
Absorption: The portion of optical attenuation in an optical fiber resulting from the conversion of optical power to heat; caused by impurities such as hydroxyl ions in the fiber. A/B Switch: A... (Read More)
Defining your System Parameters: It is important to establish the fundamental system parameters for your application. From the fundamental parameters (FOV, WD, Resolution, etc.) and a few... (Read More)
Conventional narrowband interference filters are fabricated in two steps - one to determine the center wavelength and bandwidth of the filter, and a second step to determine its blocking capabilities. (Read More)