Electronic Theatre Controls, Inc.

William R Florac

Wendy Luedtke

Evan Gnam

Donald Aloysius Hoffend, Iii

Edwin William Bolz

Michael Lichter

Gary Bewick

James Uphoff

David J Cahalane

Michael Wood

Isabel Coff

Donald A Hoffend

Donald A Iii Hoffend

Systems, methods, and devices described herein provide for operating a lighting fixture with a plurality of light sources at a target chromaticity with a target output spectral power distribution. The methods include multiplying a first spectral power distribution by a second spectral power distribution to determine a product spectral power distribution, multiplying the product spectral power distribution by an illuminant spectral power distribution to determine the target output spectral power distribution at the target chromaticity, and driving the plurality of light sources at intensities corresponding to the target output spectral power distribution.

Systems, methods, and devices for creating a custom output spectral power distribution

A method for control of a light fixture, the method including energizing the light fixture to produce a first light output with a first chromaticity and a first spectral power distribution, receiving a user input representative of a desired adjustment of a lighting effect, generating a target spectrum based on the user input, and energizing the light fixture to produce a second light output with the first chromaticity and a second spectral power distribution. The second power distribution approximates the target spectrum.

Systems, methods, and devices for influencing spectral content of a light output

A lift assembly including an article to be lifted between a lowered position and a raised position, a flexible drive element coupled to the article and defining a longitudinal axis, a power mechanism coupled to the flexible drive element, a drum powered by the power mechanism and dimensioned to facilitate winding of the flexible drive element onto the drum, and a cable keeper providing a force on the flexible drive element to bias the flexible drive element toward the drum.

Lift assembly systems and methods

A light fixture including a substrate and a plurality of light emitting diodes mounted on the substrate. The plurality of light emitting diodes includes a first light emitting diode having a peak wavelength within a range of 600 nanometers and 630 nanometers, and a full width at half maximum value of at least 140 nanometers.

LEDs with spectral power distributions and arrays of LEDs comprising the same

A light fixture including an array of LED light sources corresponding to a color channel of the light fixture, a driver circuit configured to drive the array of LED light sources, and a controller. The controller controls the operation of the light fixture to receive a direct drive signal related to a direct drive signal value for the array of LED light sources, determine an output of a reference light fixture based on the direct drive signal, determine a value for a color channel drive signal based on the output of the reference light fixture, and provide a control signal to the driver circuit to cause the driver circuit to apply the color channel drive signal having the value to the array of LED light sources. The value for the color channel drive signal results in an output of the light fixture that matches the output of the reference light fixture.

Systems, methods, and devices for controlling one or more LED light fixtures

A lift assembly includes an article to be lifted between a lowered position and a raised position, a drive element coupled to the article, a power mechanism coupled to the drive element, and a power transfer mechanism coupled between the power mechanism and the drive element. The power transfer mechanism includes control electronics having a first upward limit switch adapted to deactivate the power mechanism when the article is lifted to a first upward height, and a second upward limit switch adapted to deactivate the power mechanism when the article is lifted to a second upward height higher than the first upward height.

A lift assembly comprising an article to be raised and lowered, a cable coupled to the article and defining a longitudinal axis, a power mechanism coupled to the drive element, a drum powered by the power mechanism, a cable keeper biasing the drive element toward the drum, a keeper shaft providing lateral movement of the cable keeper, and an encoder mounted for rotation with the keeper shaft. The encoder provides information regarding the position of the article. The lift assembly can also include a load cell assembly including a load cell housing, a load cell member contacting the drive element and movable relative to the load cell housing, and a load cell sensor coupled to the load cell member and operative to provide an output corresponding with a load on the drive element. The load cell member can be mounted for movement laterally relative to the longitudinal axis.

Growing community of inventors

Verona, WI, United States of America

William R Florac