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The original meaning of dichroic, from the Greek dikhroos, two-coloured, refers to any optical device which can split a beam of light into two beams with differing wavelengths.
The color transmitted by the filter exhibits a blue shift with increasing angle of incidence, see Dielectric mirror. In a dichroic mirror or filter, instead of using an oil film to produce the interference, alternating layers of optical coatings with different refractive indices are built up upon a glass substrate. The interfaces between the ...
A pendant made from modern dichroic glass. Dichroic glass is glass which can display multiple different colors depending on lighting conditions.. One dichroic material is a modern composite non-translucent glass that is produced by stacking layers of metal oxides which give the glass shifting colors depending on the angle of view, causing an array of colors to be displayed as an example of ...
A dichromatic color space can be defined by only two primary colors. When these primary colors are also the unique hues , then the color space contains the individuals entire gamut. In dichromacy, the unique hues can be evoked by exciting only a single cone at a time, e.g. monochromatic light near the extremes of the visible spectrum.
Some filters, like mirrors, interference filters, or metal meshes, reflect or scatter much of the non-transmitted light. The ( dimensionless ) Optical Density of a filter at a particular wavelength of light is defined as − log 10 T {\displaystyle -\log _{10}T} where T is the (dimensionless) transmittance of the filter at that wavelength.
Dichromatic may refer to: Dichromacy , a form of color-blindness in which only two light wavelengths are distinguished rather than the usual three Dichromatic, describing an optical device which splits light into two parts according to its wavelength: a form of dichroism
There are no mirror reflection (m) operations for the dichromatic triangle, as there would be if all the smaller component triangles were coloured white. However, by introducing the anti-mirror reflection (m') operation the full dihedral D3 symmetry is restored. The six operations making up the dichromatic D3 (3m') point group are: identity (e)
The extent of dichromatism of material can be quantified by the Kreft's dichromaticity index (DI). It is defined as the difference in hue angle (Δh ab) between the colour of the sample at the dilution, where the chroma (colour saturation) is maximal and the colour of four times more diluted (or thinner) and four times more concentrated (or thicker) sample.