dichroic filter


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dichroic filter

n
(General Physics) an optical colour filter operating on the principle of wave interference between closely spaced reflecting surfaces, rather than by colour absorption
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References in periodicals archive ?
The technology involved is dubbed by Apple as 'Quantum dot-enhanced display having dichroic filter' or QDs, which according to Apple Insider "are technically nanocrystals - in some cases smaller than a virus - made from various semiconductor materials that exhibit special quantum mechanical characteristics."
These coatings are compatible with a proprietary dichroic filter technology enabled by the Microdyn sputtering process, which is said to yield high performance, uniform, transparent conductive filters that remain stable while withstanding high thermal loads and changes in humidity.
Fluorescence emission was evaluated with a Zeiss Photomicroskop III equipped with a Photometer 03 microfluorimeter, HBO 100-W mercury vapor light source, dichroic filter (FT 580), exciter filter (PB 546/12), and barrier filter (LP 590).
The consequences of the dichroic filter, mismatch of emission spectra reflected in s([lambda]), and disparity of the extinction coefficients are examined.
A useful and distinguishing feature is oocyst autofluorescence, which appears blue by Epi-illumination and a 365-nm dichroic exciter filter and green by a 450-nm to 490-nm dichroic filter.
The function of the camera must be split between processing the incoming light and focusing on the dichroic filter. Sensitivity is lost as light is diffused by the filter.
After optimizing spectral bands, application-specific cameras can be scaled to production using a proprietary technology to micropattern a passive dichroic filter array onto camera sensors.
Ocean Optics Inc., Dunedin, Fla., has begun commercial shipments of optical network and digital imaging products based on its Dichroic Filter Array (DFA) technology.
Targetti succeeded in lowering the colour temperature of the output light to 4,000K and a colour rendering index (Ra> 80), by developing multilayer dichroic filters in their laboratory with proprietary software and processes.