Luminaire manufacturing tolerances and measurement uncertainties will limit the expected accuracy of the luminous intensity
data to at best a few percent when applied to production luminaires.
The current SI is founded on the seven base quantities, assumed to be independent, time, length, mass, electric current, thermodynamic temperature, amount of substance, and luminous intensity
, for which the SI base units are the second s, meter m, kilogram kg, ampere A, kelvin K, mole mol, and candela cd, respectively; see Table 1.
The durability and flexibility of solid-state, light emitting diode (LED) light sources permits them to be readily switched on and off and adjusted in luminous intensity
through current control with no moving parts.
R30T consumes only 15W and emits luminous intensity
equivalent to a 75W halogen lamp; R38T consumes 20W and emits luminous intensity
equivalent to a 100W halogen lamp.
6 K/W (typical, LED only), a luminous intensity
RP-1 sets a maximum limit on luminous intensity
for luminaires installed in office environments, as summarized in Table 1 [IES 2004].
The ability to test luminaires up to 30" x 30" for Luminous Intensity
Distribution, with a new goniometer that allows testing of lamp tubes as long as 4 feet.
The IES makes strict recommendations for the maximum luminous intensity
in units of candela.
Under the replacement plan, the government will choose Penghu County or Hsinchu County next year as the trial ground to test performances of the lights, including luminous intensity
distribution and luminous lux, before the replacement plan kicks off.
The LED signals have been introduced in countries such as Germany, Turkey, Japan and South Africa and have significantly minimised traffic accidents due to their luminous intensity
Unmatched thermal performance coupled with package interconnectivity allows Lamina to densely cluster multiple LEDs to achieve exceptionally high luminous intensity
in very small footprints.
With a luminous intensity
of up to 2000 mcd, the UW series can be used for indoor/outdoor displays or as indicators in appliances, automobiles, medical devices or industrial controls.