luminous intensity

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lu·mi·nous in·ten·si·ty (I),

the luminous flux per unit solid angle in a given direction.

lu·mi·nous in·ten·si·ty

(I) (lū'mi-nŭs in-ten'si-tē)
The luminous flux per unit solid angle in a given direction.
Synonym(s): radiant intensity.

intensity, luminous

Quotient of the luminous flux leaving the source, propagated in an element of solid angle containing the given direction, divided by the element of solid angle. Symbol: I. Unit: candela (CIE).
References in periodicals archive ?
However, this necessitates an accurate prediction of the radiant intensity field.
The first term represents the spectral emission from the surface, while the second term represents the reflected radiant intensity.
1997), considers discrete directions and nodes and calculates the radiant intensity at each point and direction within the enclosure.
lambda]]([OMEGA]) = directional spectral radiant intensity (W/[m.
b,[lambda]] = spectral radiant intensity for a black body (W/[m.
While standard IR emitters typically offer drive currents to 100 mA, the low thermal resistivity of the VSLB9530S allows continuous drive currents up to 150 mA, which pushes the achievable radiant intensity to 60 mW/sr at 150 mA.
20 is related to the radiant intensity of the beam per milliamperes of beam current.
Theory indicates that if the magnetic field, radius of the orbit, and electron current are known, then the absolute radiant intensity of the beam can be calculated.
2] sr) Radiant intensity I W/sr lm/sr=cd Radiometric quantity Symbol Photometric quantity Radiant energy [Q.
And for small angles of roughly three degrees, values of up to 700 mW/steradiant (measuring the radiant intensity of sharply focusing infrared emitting diodes) can be achieved, even with a small chip.
Infrared radiant intensity can be hazardous to the human eye if it does not fall within specified safe limits, and a warning label is mandated if a product fails to meet the IEC standard.
Many of our customers needed the high radiant intensity and sensitivity provided by radial technology," said Karl Leahy, Optoelectronics senior product marketing engineer.