Terms in this set (54)
Yoke Locking Knob
Loosen this so that the light can tilt up and down; tighten it to lock the position of the light
Yoke Bolt and Lock Washer
Attaches yoke to c-clamp. Can be loosened slightly to achieve left-right pan.
This is how the light mounts. May be done with a c-clamp or floor mount
Top hat looking device designed to limit beam spread and mask the light source from the audience
up and down focus movement
Long narrow trough-like instrument with three or four circuits controlling the individual lamps. Each circuit is equipped with a separate color
The act of moving a shutter to a desired position
A beam shaping device located at the aperture of an ERS
Approximately 2' length of steel cable with a quick link on one end and a loop on the other
Secures gel frame in lighting instrument
Prevents the barrel from falling out of the instrument
Helps to concentrate and direct the light from the lamp. This gathers dust and may need to be cleaned with a soft rag.
Mirror-like part of the lighting instrument designed to maximize the output of the unit
Onstage working light source such as a table lamp, wall sconce or oil lamp
Tighten until firm resistance reached
pattern holder slot
Insert a gobo into a gobo holder here
To connect a stage circuit to a dimmer circuit
Creates a powerful punch of light with a soft edge. Only instrument to have an oval shaped beam
It may be adjusted for left-right pan.
Left and right focus movement
To tighten all adjustable parts of the instrument in order to maintain the precise position the designer intended
Lens Release Knob
Loosen this or pull up on it in order to release the bottom hinged lamp housing
Piece of glass that assists in controlling the light
Lamp Housing Release Knob
Loosen completely in order to access lamp base
Holds the lamp. Each style of lighting instrument employs a different method of holding the lamp
Touch this, not the lamp itself, when handling lamps
The stage term for "light bulbs" used in stage lighting instruments
Used for bench focusing a lighting instrument
An adjustable device in an ERS to alter the diameter of the circular pattern of light
Any complete stage light
The brightest part of a beam of light
A thin metal template inserted into an ERS to project a shadow pattern of light
Network of steel "I" beams and 1 1/2" pipe supporting the rigging, lighting instruments, and other pieces of suspended theatre, hardware and scenery.
Focus Adjustment Knob
Loosen this slightly to move the lamp housing for and aft. Aft is "spot"; Fore is "flood"
Flood: is a more uniform wash
Spot: will have a very defined hotspot in the center
A spotlight that produces a soft, diffused light
An accessory which allows the lighting instrument to be placed on the floor
Ellipsoidal Reflector Spotlight
Designed for long throws with maximum control. Come with either fixed or variable focal lengths.
Nicknames: Source Four, Leko
Drop in Iris Slot
This may be covered with a plate that you can screw off.
Electrical device that controls the intensity of the light source connected to it
3-pin stage receptacle
3-pin stage plug
Todd Theatre uses the 3-pin style (stage pin) connector. Rated for 125 volts/20 amps
Color Frame Holder
Holds the gel frame
Holds the gel
Electrical circuit terminating on one end (close to stage), in a female receptacle. The other end (furthest from stage) is connected to a dimmer or patch
Electronic patching system in which one or more dimmers can be assigned to a control channel, which in turn controls the intensity level of those dimmers
Used to attach light to 1.5" pipe.
The process of tuning the lighting instrument for maximum light output
Beam Focus Knob
Loosen this slightly to slide the barrel fore and aft in order to alter the texture of the light from sharp to soft. Tighten once desired effect is achieved.
The angular measurement in degrees of the cone of light that emits from the front of the lighting instrument.
The cone of a light that emits from the front of any lighting instrument
Barrel Rotating Knob
Loosen this to allow to rotate the barrel/shutter in either direction
The front portion of an ERS that houses the lenses. Concentrates the beam into a focusable image
Accessory for a Fresnel or Par whose movable flippers are swung into the beam to control it