Lamp Intensity Dialog Box
Modifies the brightness, or lamp intensity, of a photometric light.
List of Options
The following options are displayed.
- Lamp Intensity
-
Represents the brightness of a lamp. More specifically, it represents the luminous
intensity, or power in a particular direction. It is specified in candela by default
(in both the SI and American units systems). Must select from one of the following
radial buttons:- Intensity (Candela). Specifies the number of candelas (cd) is the SI unit of luminous intensity (perceived
power emitted by a light source in a particular direction). - Flux (Lumen). Represents the rate of total energy leaving the lamp. It is specified in lumens (SI
and American). Mathematically, the flux is the integral of the luminous intensity
over the sphere. The calculation of flux depends on the distribution of intensities.
For a point light with constant intensity, the flux is simply the product of the intensity
and the solid angle of a sphere: 4 Pi x Intensity. For a spot light, the flux is the
product of the intensity and the solid angle of the hotspot cone, plus the incremental
solid angle of the fall-off region. For a weblight, there isn’t any analytical formula.
The flux is obtained by numerically integrating the intensities provided in the web
file. - Illuminance (Foot-candles). Represents the energy per area arriving at a surface (Area-flux-density). It is specified
in lux (SI) and foot-candles (American). For a near light, because the light rays
are diverging, you have to talk about the illuminance at a specific distance from
the lamp. So this requires an extra control to specify this distance and an additional
indicator in the viewport to show the distance.
- Intensity (Candela). Specifies the number of candelas (cd) is the SI unit of luminous intensity (perceived
- Intensity Input Control
-
Controls the intensity value.
- Distance
-
When Illuminance is selected, displays the lux as a distance glyph in the viewport
for the given light. Note: the text for the illuminance radio button will depend on
the current lighting units. For the SI system, this will be “Illuminance (Lux),†and
for the American system, it will be “Illuminance (Footcandles).†The distance field
represents a world distance and should be formatted in the current length unit corresponding
to the current lighting units. The distance field represents a world distance and
should be formatted in the current length unit corresponding to the current insertion
units controlled by the INSUNITS systems variable. - Resulting Intensity
-
Specifies the type of light. Determines the distribution of light from the lamp. The
type of lighting can be changed after the light has been added to the drawings.- Intensity Factor. Specifies the intensity factor.
- Resulting Intensity. Displays the resulting intensity of a light as the product of the Lamp Intensity
value and the Intensity Factor. The value is read-only.
e this dialog box to modify the brightness of a lamp for a photometric light. Lamp intensity represents the luminous intensity, or power in a particular direction.lamp intensity, of a photometric light. List of Options The following options are displayed. Lamp Intensity Represents the brightness of …dialog box to modify the brightness of a lamp for a photometric light. Lamp intensity represents the luminous intensity, or power in a particular direction.light properties dialog box if you will create photometric light.You can change light units (above said this thread )from light intensity …Lamp Intensity dialog box. EIGENSCHAFTEN (Befehl): Lampenintensität (Dialogfeld). Dialog box for setting the Lamp Intensity for a …Lamp Intensity” slider, which is set … Check this box in the Light Settings dialog box to have the light cast a shadow.