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L
LEKO (TM)
A trademark for a brand of ERS currently owned and marketed by Strand Lighting.
LENS
Optical glass with one or both sides curved, the purpose of which is to direct light by concentrating or dispersing light beams.
LIGHT BOARD
A lighting control console or desk.
LIGHT BOARD OPERATOR (BOARD OP)
The person who runs the lighting control console, programming and executing cues as directed by the lighting designer.
LIGHT CUE
Any point in the running of a show where lighting changes occur.
LIGHT CUE (LQ, LX Q, Q)
A lighting design term referring to a point in a show at which a predetermined change in the lighting is executed. The lighting director or stage manager "calls the cue" usually by saying "go," and the light board operator executes the lighting change. A change may occur instantly, as in a bump cue, or take place as a long fade over time. On simple controllers a cue can be thought of as a combination of channels at specific levels which create the lighting for a specific moment in a show. More sophisticated controllers build cues in increasingly complex ways making the idea of a cue a more abstract concept. Cue is often used to describe a moment or picture (also called a look or state) created by lighting on stage.
LIGHT CURTAIN
A lighting effect which, when an area is diffused with smoke, produces a wall of light. Produced (usually) by a batten of low voltage PAR lamps wired in series.
Automated versions are available which have color changers built-in and are able to tilt up and down. The original Light Curtain designed by Josef Svoboda is still made by ADB.
LIGHT JOCKEY or LJ
Danish slang for lighting designer.
LIGHT OUTPUT
Luminous flux, measured in lumens. The light output rating of a lamp is a measure of its total integrated light output.
LIGHT SHOW
A term describing a production where the lighting is or takes a primary focus. The idea of a light show may have developed from the psychedelic light show of the late 60's, but is now used to describe a range of laser and lighting spectacles.
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