Term
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Definition
A set of external shutters that mount in the gel holder of a fixture. Commonly
used in Fresnels, can also be used in PAR fixtures. |
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Term
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Definition
| The front of an ERS where the lens train is located. |
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Term
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Definition
The angle created by the cone of light out of a fixture where the output
drops to 50% of the maximum light. |
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Term
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Definition
| Moving the lamp in a fixture to change the light output. |
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Term
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Definition
| A device that mounts inside a follow spot to hold the gel. |
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Term
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Definition
| Another term used for a PAR lamp. |
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Term
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Definition
| The connector on the back of a PAR lamp. |
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Term
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Definition
An opaque square of metal with a hole in the center that can be put into the gel
holder of an ERS; used to remove halation from a gobo allowing a sharp focus. |
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Term
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Definition
| The covering of the lamp, can be glass or quartz. |
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Term
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Definition
The angle created by the cone of light out of a fixture where the output
drops to 10% of the maximum light. The maximum useable light from a fixture. |
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Term
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Definition
| A resistor that heats up and glows when current is applied, usually tungsten. |
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Term
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Definition
The secondary focus point in an ERS, beam can be manipulated by shutters or a
gobo at this point. |
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Term
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Definition
| A metal or glass patterned disk placed at the gate of an ERS to project an image. |
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Term
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Definition
Light bulb used in entertainment lighting fixtures, usually has a quartz envelope;
can be an incandescent or arc source. |
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Term
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Definition
| Side to side movement of a fixture. |
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Term
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Definition
| Cable that runs from the lamp housing of a fixture to the connector. |
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Term
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Definition
| Up and down movement of a fixture. |
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Term
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Definition
| A device used to hide lens flair that can be mounted in the gel holder of a fixture. |
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Term
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Definition
| A slide mechanism that moves the lenses in a follow spot to focus the light. |
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Term
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Definition
| U shaped bracket that attaches to the sides of a fixture with a clamp at the top. |
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