Abstract: A system and method of cooling a bulb of a type that requires cooling in one part, but not in others. A deflector assembly is coupled through a reflector, to the bulb, to cool only one part.

Abstract: A control of gobos defend by records in the gobo. The gobos are formed by menued shapes.

Abstract: Calibrating each of a plurality of driven optical filters. The color parameters of the driven optical filters are characterized for the individual optical filter. These color parameters are used as calibration data to calibrate more standard information.

Abstract: Calibrating each of a plurality of driven optical filters. The color parameters of the driven optical filters are characterized for the individual optical filter. These color parameters are used as calibration data to calibrate more standard information.

Abstract: A special record format used for commanding light pattern shapes and addressable light pattern shape generator. The command format includes a first part which commands a specified gobo and second parts which command the characteristics of that gobo. The gobo is formed by making a default gobo based on the type and modifying that default gobo to fit the characteristics.

Abstract: A system of digitally controlling light output by producing separate control signals for different colors of light. The light is contained in an optical waveguide, either prior to shaping or after shaping. Each of the control signals is coupled to a digitally controlled device which controls the shape of the light output. The digital controlling device can be digital mirror devices, for example.

Abstract: An illumination obscurement device for controlling the obscurement of illumination from a light source which is optimized for use with a rectangular, arrayed, selective reflection device. In a preferred embodiment, a rotatable shutter with three positions is placed between a light source and a DMD. The first position of the shutter is a mask, preferably an out of focus circle. This out of focus circle creates a circular mask and changes any unwanted dim reflection to a circular shape. The second position of the shutter is completely open, allowing substantially all the light to pass. The third position of the shutter is completely closed, blocking substantially all the light from passing. By controlling the penumbra illumination surrounding the desired illumination, DMDs can be used in illumination devices without creating undesirable rectangular penumbras.

Abstract: Calibrating each of a plurality of driven optical filters. The color parameters of the driven optical filters are characterized for the individual optical filter. These color parameters are used as calibration data to calibrate more standard information.

Abstract: A stage lighting lamp unit includes a processor for receiving control data from a remote console. Beam orientation data for the lamp unit is passed to the lamp in the form of the x, y and z co-ordinates of a point in space through which the beam is to pass. The processor divides the required lamp travel into a number of stages dependent on execution duration data sent with the position data, and calculates, for each stage, a new value for pan and tilt angles for the lamp. These values are passed to pan and tilt controlling co-processors which control servo-motors for pan and tilt operation. The lamp unit also incorporates a rotatable shutter for interrupting the lamp beam when required. The shutters of all the lamps in a system can be instructed from the remote console to open and close in synchronism, thereby providing a stroboscopic effect.

Abstract: A special record format used for commanding light pattern shapes and addressable light pattern shape generator. The command format includes a first part which commands a specified gobo and second parts which command the characteristics of that gobo. The gobo is formed by making a default gobo based on the type and modifying that default gobo to fit the characteristics.

Abstract: A flexible medium for a scrolling color changer and method of making thereof. The medium is made by applying an ink using a Meyer Rod which has varying cell lengths along its length. This leaves varying size cells of ink at different locations along the length of the medium. The ink has special characteristics whereby its evaporation rate and viscosity are carefully controlled. The viscosity is such that an amount of levelling will occur will be equal to the distance between any cells, but that cell to cell levelling will not, in general, occur.

Abstract: A stage element movement assembly includes a first cable in a tunnel below the stage deck and extending in a first path in a first direction. A first dog is secured to the first cable for movement therewith in the tunnel, and an engagement member is engaged with the first dog and will extend upwardly through a slot in the stage deck for engagement with the stage deck for engagement with the stage element to be moved. A second cable is provided for disposition in a tunnel below the stage deck in a second path in a direction at an angle to the direction of the first cable and crosses below the first cable. Linearly spaced cable guide rollers on opposite sides of the cable crossing cause the cable to move downwardly to pass below the first cable and thereafter be moved upwardly to the plane of its original path. Engagement elements are secured to the cable in spaced relationship and a crossing dog having spaced engagement elements are engaged with the engagement elements on the second cable.

Abstract: A stage installation for vertical movement of multiple stage elements has a computer controlled winch assembly comprising a support member having a channel, a platform adjacent the support member, electrical control and electrical power raceways in the channel, and a multiplicity of winches supported on the platform. The winches include a housing, a bidirectional servomotor, a rotating drum driven by the motor in either direction to haul or pay out cables operatively connected to the stage elements. Connectors are coupled to the electrical power and electrical control raceways, and a remote computer terminal transmits signals to the winches to initiate and terminate operation of the servomotor.