Creates a free spotlight which is a spotlight without a specified target.
The following prompts are displayed.
Specify the source location by entering coordinate values or using the pointing device.
Specifies the name of the light. You can use uppercase and lowercase letters, numbers, spaces, hyphens (-), and underscores (_) in the name. The maximum length is 256 characters.
Sets the intensity or brightness of the light. The range is 0.00 to the maximum value that is supported by your system.
Specifies the angle that defines the brightest cone of light, which is known to lighting designers as the beam angle. This value can range from 0 to 160 degrees or the equivalent values based on AUNITS.
Specifies the angle that defines the full cone of light, which is also known as the field angle. This value can range from 0 to 160 degrees. The default is 50 degrees or the equivalent values based on AUNITS. The falloff angle must be greater than or equal to the hotspot angle.
Turns the light on and off. If lighting is not enabled in the drawing, this setting has no effect.
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 lamp is the perceived power emitted in all directions. Luminance is the total luminous flux incident on a surface, per unit area.
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.
Enter f to specify the perceived power in a luminous flux value.
If you enter i, you can specify the intensity of the light based on an illuminance value.
The illuminance value can be specified in either lux or foot-candles. Enter d to specify a distance to use to calculate illuminance.
Specify the color of the light based on a color name or a Kelvin temperature. Enter ? to display a list of color names.
Enter a text string using wild card characters to display a partial listing of color names, or an asterisk (*) to display all the possible choices.
If you enter k, you can specify the color of the light based on a Kelvin temperature value.
Makes the light cast shadows.
Turns off display and calculation of shadows for the light. Turning shadows off increases performance.
Displays shadows with sharp edges. Use this option to increase performance.
Displays realistic shadows with soft edges.
Specifies the amount of memory that should be used to calculate the shadow map.
Specifies the softness that should be used to calculate the shadow map.
Displays realistic shadows with softer shadows (penumbra) based on extended light sources.
Specify the shape of the shadow by entering s and then the dimensions of the shape. (For example, the radius of the sphere or the length and width of a rectangle.)
Specify the sample size by entering a.
Specify the visibility of the shape by for the shadow by entering v.
Controls how light diminishes over distance. The farther away an object is from a spotlight, the darker the object appears. Attenuation is also known as decay.
Specifies whether to use limits or not.
Specifies the point where light starts as an offset from the center of the light. The default is 0.
Specifies the point where light ends as an offset from the center of the light. No light is cast beyond this point. Setting an end limit increases performance where the effect of lighting is so minimal that the calculations are wasted processing time.
Controls the color of the light.
Specifies a True Color. Enter in the format R,G,B (red, green, blue).
Specifies an ACI (AutoCAD Color Index) color.
Specifies an HSL (hue, saturation, luminance) color.
Specifies a color from a color book.