Transcript Chapter 10 Advanced Technology Instruments

Notes taken from Gillette’s
Designing with Light
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Refers to plays that rely on the spoken word to
convey their message
Does not include:
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Musicals
Reviews
Dance
Opera
Concerts
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Pan – To rotate horizontally
Tilt – To rotate vertically
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USITT DMX512
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Controlled by any light board
Proprietary
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Designed specifically for use with a specific
instrument
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Music
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Some respond to certain notes, ranges of notes, beats
or variations in volume
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Lamps
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Encapsulated Arc
 Very bright, High color temperature light
 Point of origin of the light is the very small area between the
anode and cathode of the encapsulated arc
 Not dimmable, Require a mechanical dimmer
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Incandescent Tungsten-Halogen
 Lower output
 Lower cost
 Dimmable
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Fits on color media holder
Contains a roll of gel, w/ different colors (8-20)
DMX controlled
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Dichroic Color Changer
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3 color filters
 Cyan, Magenta, Amber
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Degree of insertion determines saturation
http://www.seachangeronline.com/profile.html
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Many LED’s clustered together to create a
single lamp
PAR, Striplight
Low heat, but can generate enough heat to
damage LED’s in the center cluster
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Use heat sinks to move heat away from LEDs
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LED’s require DC power
Stage lighting uses AC
LED’s require separate rectifier transformer
http://en.wikipedia.org/wiki/LED
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Can use separately controlled red, blue and
green LED’s to perform color mixing with one
instrument
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Named for its shape
Transparent, translucent, or opaque depending
on function
Inserted into a beam of light to color, shape, or
dim the light
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The surface or interior of the glass is scored or
beveled to create the desired effect
Bends beam to an oval shape
http://en.wikipedia.org/wiki/Prism_(optics)
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Widening or narrowing of the cone of light
emitted by the instrument
Achieved by varying the focal length of the
optical train
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An instantaneous cue
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Electric Motor whose movement consists of
discrete angular steps rather than continuous
rotation
Used to control
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Color, zoom, pan, tilt
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Mirror
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Do not have to rotate
entire instrument
Lighter
Require less powerful
motors
Less noise
High End
Technobeam, Martin
Roboscan
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Entire fixture pans and tilts
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Cyberlight
 Many features
 100 lbs.
 Encapsulated arc source
 Mechanical dimmer
 Mirror directional control
 Variable diffusion
 Motorized zoom and focus
 3 separate internally mounted dichroic color systems
 Moving and static gobos
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Entire fixture pans and tilts
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Varilite VL500
 Tungsten or arc source (with mechanical dimmer)
 Dichroic color changer
 Interchangeable front lenses for beam control
 Pan and tilt
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Martin MAC 700 Profile
 Arc source w/ Mechanical dimming
 Motorized zoom and focus
 Dichroic color mixing
 Gobo wheel and gobo animation
 Strobe effects
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Allows moving fixtures to track performer w/
proprietary microphone
4 ultrasonic speakers at each corner of the stage
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Sound can’t be heard by humans
Microphone then transmits location to moving
lights, which then follow the performer
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Fog
A low lying smoke effect
 Thick
 Can be cooled with a chiller to hug the ground
 Can also be made by dipping dried ice into hot
water.
 Uncooled fog disperses into the house
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Fog
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Haze
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A smoke effect that fills the entire stage space
Light and airy
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An engineered structure of
metal pipes designed to hold or
support something
Add stability to moving lights
Frequently used to protect the
lights when hung within rigging
during tours
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Enables designer to see design, before the show
is actually hung
WYSIWIG
Vectorworks Spotlight w/ ESP Vision
Use 3D models of the stage and set
Can do animations or create stills
Designed to do aid in preprogramming
http://www.youtube.com/watch?v=32UKdT6ehhI