Gobo

A stencil or template placed inside or in front of a light source to control the shape of the emitted light.

A gobo is a stencil or template placed inside or in front of a light source to control the shape of the emitted light. Lighting designers typically use them with stage lighting instruments to manipulate the shape of the light cast over a space or object—for example, to produce a pattern of leaves on a stage floor. Sources

The term "gobo" has come to sometimes refer to any device that produces patterns of light and shadow, and various pieces of equipment that go before a light (such as a gobo arm or gobo head). In theatrical lighting, however, the term more specifically refers to a device placed in 'the gate' or at the 'point of focus' between the light source, called a lamp and the lenses (or other optics). This placement is important because it produces a crisp, sharp-edged pattern or design (of logos, fine detail, architecture, etc.). Gobos placed after the optics do not produce a finely focused image and are more precisely called "flags" or "cucoloris" ("cookies").

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Gobo
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Adapted from content published on wikipedia.org
credit
  • Image By Jeh - I took this picture (and the insert) in a hotel room that had this device in it. I combined the two images using GIMP., CC BY-SA 3.0 — from wikipedia.org
Last modified on November 2, 2019, 8:50 am
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