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Photonics Dictionary: R

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RSS
ray surfaces per second; reduced space symbology
RT
real time; remote terminal; room temperature
RTE
radiative transfer equation
RTG
radioactive thermoelectric generator
RTS
real-time system
RTSP protocol
RTSP, or real-time streaming protocol, is a network control protocol designed for controlling streaming media servers. It is used for establishing and controlling media sessions between endpoints....
rub
A type of scratch.
ruby laser
The optically pumped, solid-state laser that uses sapphire as the host lattice and chromium as the active ion. The emission takes place in the red portion of the spectrum.
rugate
Bearing alternate ridges and grooves; corrugated. Said of some optical surfaces.
Rugate filters
A Rugate filter is a type of optical filter that is designed to have a continuously varying refractive index profile throughout its thickness, rather than the discrete layers found in traditional...
run end coding
A digital imaging method whereby the first gray level in the ordered sequence and the position of the first lengths of all runs are specified; used when there are only two possible gray levels...
run length coding
A digital imaging method whereby the first gray level of each sequential point-by-point sample and its position in the succession of gray levels is encoded. It is used when there is a tendency for...
runner cut
A term describing a type of scratch.
runout
In a linear stage, any deviation from the desired translation across a flat, straight line.
Ruticon
A ruticon is an opto-electronic device in which light going through it can be modulated by an electric field. The intensity distribution of the resulting image can be precisely controlled....
RVI
remote visual inspection
Rydberg atom
The term "Rydberg atom" refers to an atom in a highly excited state where one or more of its electrons are in a Rydberg orbital. A Rydberg atom is characterized by having an electron orbit that is...
RZ
return to zero

Photonics DictionaryR

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