2013

Table Of Contents
Intensity/Intensity Factor
Sets the intensity or brightness of the light. The range is 0.00 to the maximum
value that is supported by your system.
Enter intensity (0.00-max float) <1.0000>:
Status
Turns the light on and off. If lighting is not enabled in the drawing, this setting
has no effect
Enter status [oN/oFf] <On>:
Photometry
Photometry is available when the LIGHTINGUNITS system variable is set to
1 or 2. Photometry is the measurement of the luminous intensities of visible
light sources.
In photometry, luminous intensity is a measure of the perceived power emitted
by a light source in a particular direction. Luminous flux is the perceived
power per unit of solid angle. The total luminous flux for a is the perceived
power emitted in all directions. Luminance is the total luminous flux incident
on a surface, per unit area.
Enter a photometric option to change [Intensity/Color/eXit] <I>:
Intensity Enter intensity (Cd) or enter an option [Flux/Illuminance]
<1500.0000>:
Enter an intensity value in candelas, the perceived power in a luminous flux
value, or illuminance value for the total luminous flux incident on a surface.
Candela (symbol: cd) is the SI unit of luminous intensity (perceived power
emitted by a light source in a particular direction). Cd/Sr
Lux (symbol: lx) is the SI unit of illuminance. Lm/m^2
Foot-candle (symbol: fc) is the American unit of illuminance. Lm/ft^2
Enter f to specify the perceived power in a luminous flux value.
Enter Flux (Lm) <18849.5556>:
If you enter i, you can specify the intensity of the light based on an
illuminance value.
Enter Illuminance ("Lx"|"Fc") or enter an option [Distance] <1500.0000>:
The illuminance value can be specified in either lux or foot-candles. Enter d
to specify a distance to use to calculate illuminance.
Enter Distance <1.0000>:
Color Enter color name or enter an option [?/Kelvin] <D65White>:
P Commands | 829