Material or scenery which defines the performance area and conceals the technical areas.

Products applied to the face or body of an actor to change or enhance their appearance.

Optical glass with one or both sides curved, the purpose of which is to direct light by concentrating or dispersing light beams.

Another name used for ellipsoidal instruments.

Vertical curtain set as masking piece at the side of an end-on acting area. Usually set up in pairs across the stage and used in conjunction with borders to frame the audiences view.

A light bulb is used in a theatrical instrument.

A diagram that shows the location of all lighting instruments and which area or object each instrument illuminates.

The strongest source of light usually aimed at an acting area.

Adjustable aperture which, when placed in the gate of an instrument lantern, varies the size of a beam of light.