Lamp-Intensity-Dialog-Box

Lamp Intensity Dialog Box

    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 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),â€‌ and
    for the American system, it will be “Illuminance (Footcandles).â€‌ 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.

    Learning AutoCad

    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.