Fresnel Lens - A Fresnel lens is a type of lens invented by Augustin-Jean Fresnel. Originally developed for lighthouses, the design enables the construction of lenses of large size and short focal length without th. Used MAC 2000 E Profile. e weight and volume of material which would be required in a lens of conventional design.
The Fresnel lens (often pronounced FREZ-nell but usually the original . Used MAC 2000 E Profile. fre-NELL in theatrical and motion picture lighting applications) reduces the amount of material required compared to a conventional spherical lens by breaking the lens into a set of concentric annular sections known as Fresnel
Illumination - The simple ability to see what is occurring onstage
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Aircraft Landing Light - A narrow beam PAR lamp (28 volt) that is used on aircraft and often adopted for PAR64 and PAR46 lamps. They are most commonly 4 lamps wired in series to attain the required voltage of the circuit as . Used MAC 2000 E Profile. close to 120 volts. ACL lamps have a higher intensity, brightness and color temperature than the standard PAR lamp.
ACL lamps are more expensive than standard P. Used MAC 2000 E Profile. ARs and have a shorter life.
8-Bit DMX - A value or parameter using one DMX channel for control.. Used MAC 2000 E Profile. . Used MAC 2000 E Profile. ...
Pattern - Pattern refers to the shape, quality and evenness of a lamp's output. The pattern of light an instrument makes is largely determined by three factors. The first are the specifics of the bulb, reflecto. Used MAC 2000 E Profile. r and lens assembly. Different mounting positions for the bulb (axial, base up, base down), different sizes and shapes of reflector and the nature of the lens (or lenses) be. Used MAC 2000 E Profile. ing used can all affect the pattern of light. Secondly, the specifics of how the lamp is focused affect its pattern. In Ellipsoidal Reflector Spotlights (ERS) and their derivatives (see below), there are two beams of light emit...