Abstract: A zoom optical system includes a light source and focus, zoom, and fixed lens groups. The light source illuminates an object in or adjacent to an object plane. The focus lens group has a first positive optical power and moves to focus an object. The focus lens group has four lenses of positive, positive, positive, and negative optical power. The zoom lens group has a negative optical power and moves relative to the object plane and the focus lens group to control a beam angle while the focus lens group remains fixed relative to the object plane. The zoom lens group comprises two negative power lenses. The fixed lens group has a second positive optical power, remains in a fixed position relative to the object plane, and projects an image of the object. The fixed lens group has three lenses, comprising negative, positive, and positive optical powers.

Abstract: A luminaire includes a light engine control system and a light effect control system. The light engine control system includes a power delivery and measurement (PD&M) module, a light engine power control (LEPC) module, and a light engine. The light effect control system includes a motor driver module, a position monitor module, and a mechanical and optical effect system. The PD&M module measures electric power supplied to the light engine, determines whether the measured power deviates from a desired electric power and, in response, stops delivering power to the LEPC module. The position monitor module measures a sensed position of one or more effect motors of the mechanical and optical effect system, determines whether the sensed position deviates from the desired configuration, and in response, causes a reduction in an intensity of the light beam emitted by the luminaire.

Abstract: An automated luminaire and method are provided. The automated luminaire includes a range sensing module and a control system. The range sensing module calculates a distance to a closest object in a direction that the automated luminaire is pointed. The control system reduces a beam power density of a light beam emitted from the automated luminaire when the distance is less than a threshold distance. The method includes determining whether an emitted beam power determinant of the automated luminaire has changed; if so, calculating a threshold distance from current values of one or more beam power determinants; determining whether the distance to the closest object is greater than the threshold distance; and, if not, reducing the beam power density of the light beam emitted from the automated luminaire.

Abstract: An optical system includes a light source, a lens, and a light effect ring. The lens has first and second surfaces and receives a first light beam from the light source at the first surface and emits a second light beam from the second surface. The light effect ring includes a first plurality of light emitters emitting second light beams that obliquely illuminate the first surface of the lens and a second plurality of emitters that emit third light beams through the lens. The light effect ring may include a plurality of segments that move into and out of the first light beam, where each segment includes a first subset of the first plurality of light emitters and a second subset of the second plurality of emitters.

Abstract: A luminaire includes an enclosure, an air valve, and a control system. The enclosure includes a light source, an air pressure sensor, a temperature sensor and a first opening and is otherwise sealed from external air. The enclosure may include components that modify and emit a light beam. The air valve is coupled at a second opening to the enclosure and includes a membrane covering a third opening. The membrane reduces the passage of water droplets in air passing therethrough. The air valve blocks air passage between the enclosure and the membrane when closed and allows air passage when open. The control system determines whether the enclosure is adequately sealed based on air pressure as sensed by the air pressure sensor and a temperature as sensed by the temperature sensor.

Abstract: An automated luminaire and method are provided. The automated luminaire includes a range sensing module and a control system. The range sensing module calculates a distance to a closest object in a direction that the automated luminaire is pointed. The control system reduces a beam power density of a light beam emitted from the automated luminaire when the distance is less than a threshold distance. The method includes determining whether an emitted beam power determinant of the automated luminaire has changed; if so, calculating a threshold distance from current values of one or more beam power determinants; determining whether the distance to the closest object is greater than the threshold distance; and, if not, reducing the beam power density of the light beam emitted from the automated luminaire.

Abstract: An optical system includes a light source, a lens, and a light effect ring. The lens has first and second surfaces and receives a first light beam from the light source at the first surface and emits a second light beam from the second surface. The light effect ring includes a first plurality of light emitters emitting second light beams that obliquely illuminate the first surface of the lens and a second plurality of emitters that emit third light beams through the lens. The light effect ring may include a plurality of segments that move into and out of the first light beam, where each segment includes a first subset of the first plurality of light emitters and a second subset of the second plurality of emitters.

Abstract: A zoom optical system includes a light source and focus, zoom, and fixed lens groups. The light source illuminates an object in or adjacent to an object plane. The focus lens group has a first positive optical power and moves to focus an object. The focus lens group has four lenses of positive, positive, positive, and negative optical power. The zoom lens group has a negative optical power and moves relative to the object plane and the focus lens group to control a beam angle while the focus lens group remains fixed relative to the object plane. The zoom lens group comprises two negative power lenses. The fixed lens group has a second positive optical power, remains in a fixed position relative to the object plane, and projects an image of the object. The fixed lens group has three lenses, comprising negative, positive, and positive optical powers.

Abstract: A luminaire includes an enclosure, an air valve, and a chamber. The enclosure includes a sealed cover and light beam emitting components. The air valve is air coupled between the enclosure and the chamber. The chamber includes a drying agent and has an opening with a membrane completely covering the opening. The membrane passes air while reducing the passage of water droplets in the air. The air valve blocks air passage between the enclosure and the chamber when closed. A method for testing to determine adequate sealing of an enclosure of a luminaire includes closing an air valve to seal the enclosure from outside air, activating a heat-generating component, determining whether an air pressure in the enclosure increases by more than a threshold value, and sending a signal indicating a result of the determination. The method includes deactivating the heat-generating component and opening the air valve.

Abstract: A luminaire includes an enclosure, an air valve, and a chamber. The enclosure includes a sealed cover and light beam emitting components. The air valve is air coupled between the enclosure and the chamber. The chamber includes a drying agent and has an opening with a membrane completely covering the opening. The membrane passes air while reducing the passage of water droplets in the air. The air valve blocks air passage between the enclosure and the chamber when closed. A method for testing to determine adequate sealing of an enclosure of a luminaire includes closing an air valve to seal the enclosure from outside air, activating a heat-generating component, determining whether an air pressure in the enclosure increases by more than a threshold value, and sending a signal indicating a result of the determination. The method includes deactivating the heat-generating component and opening the air valve.

Abstract: A luminaire includes a luminaire mechanism, a stepper motor, an absolute multi-turn rotational position sensing system, and a control system. The stepper motor moves the luminaire mechanism. The absolute multi-turn rotational position sensing system includes absolute rotational sensors that detect absolute positions of a cam indexer on the motor shaft and an indexer wheel coupled to the cam indexer. The indexer wheel rotates by a predetermined amount in response to one full rotation of the cam indexer. The control system determines an absolute position of the luminaire mechanism based on information from the absolute rotational sensors relating to the positions of the cam indexer and the indexer wheel. The control system receives a commanded position for the luminaire mechanism and causes the stepper motor to move the luminaire mechanism to the commanded position based on the absolute position of the luminaire mechanism.

Abstract: A luminaire is provided that includes a head, a movement system, and a control system. The movement system rotates the luminaire head around an axis of rotation. The movement system includes a motor and a braking system. The motor moves a luminaire mechanism. The luminaire mechanism may be a gobo wheel, a lens, or other optical device of the luminaire, or it may be the luminaire head or the luminaire yoke. The control system determines whether the motor is rotating and engages the braking system when the motor is not rotating. When the motor is stopped, the control system may store in non-volatile memory a current absolute position of the luminaire mechanism.

Abstract: A luminaire includes a luminaire mechanism, a stepper motor, an absolute multi-turn rotational position sensing system, and a control system. The stepper motor moves the luminaire mechanism. The absolute multi-turn rotational position sensing system includes absolute rotational sensors that detect absolute positions of a cam indexer on the motor shaft and an indexer wheel coupled to the cam indexer. The indexer wheel rotates by a predetermined amount in response to one full rotation of the cam indexer. The control system determines an absolute position of the luminaire mechanism based on information from the absolute rotational sensors relating to the positions of the cam indexer and the indexer wheel. The control system receives a commanded position for the luminaire mechanism and causes the stepper motor to move the luminaire mechanism to the commanded position based on the absolute position of the luminaire mechanism.

Abstract: A luminaire has a light-emitting diode (LED) light source, a light sensor, and a control system. The control system receives a Measure command measure the current intensity of the LED light source. The control system measures the intensity using the light sensor, stores current intensity data in non-volatile memory, obtains the LED light source's previous intensity, selects an indicator color representing how much the current intensity is reduced from the previous intensity, and causes the luminaire to emit a light beam having the indicator color. The control system also receives an Adjust command to reduce the LED light source to a total intensity reduction amount. The control system obtains the LED light source's current reduction amount, determines whether the total intensity reduction amount is more than the current reduction amount, and, if so, causes the LED light source to emit a reduced intensity light beam.

Abstract: A method is provided for removing a light-emitting diode (LED) module from a luminaire that has a controller and a housing. The housing encloses an optical system that includes the LED module and other optical devices. The method includes electrically uncoupling an LED circuit board of the LED module from the controller. The method further includes mechanically uncoupling the LED module from the luminaire without removing other optical devices of the optical system from the housing.

Abstract: A method is provided for removing a light-emitting diode (LED) module from a luminaire that has a controller and a housing. The housing encloses an optical system that includes the LED module and other optical devices. The method includes electrically uncoupling an LED circuit board of the LED module from the controller. The method further includes mechanically uncoupling the LED module from the luminaire without removing other optical devices of the optical system from the housing.

Abstract: A luminaire is provided that includes a head, a movement system, and a control system. The movement system rotates the luminaire head around an axis of rotation. The movement system includes a motor and a braking system. The motor moves a luminaire mechanism. The luminaire mechanism may be a gobo wheel, a lens, or other optical device of the luminaire, or it may be the luminaire head or the luminaire yoke. The control system determines whether the motor is rotating and engages the braking system when the motor is not rotating. When the motor is stopped, the control system may store in non-volatile memory a current absolute position of the luminaire mechanism.

Abstract: An LED module and luminaire are provided. The LED module includes an LED circuit board having an array of LEDs powered by an electrical connector. The array of LEDs includes two or more pluralities of LEDs. The LEDs of a first plurality are rotated relative to the LEDs of a second plurality. The rotation amount is not an integer multiple of 90°. The LEDs of the first plurality are not rotated relative to each other, and the LEDs of the second plurality are not rotated relative to each other. The LED module can be removed from an optical system of the luminaire by electrically uncoupling the LED circuit board and mechanically uncoupling the LED module from the luminaire without removing other elements of the optical system from the luminaire.

Abstract: An LED module and luminaire are provided. The luminaire includes a controller and an optical system with adjustable optical elements and an LED module with an LED circuit board electrically coupled to the controller. The LED circuit board includes an array of LEDs configured in two or more concentric zones, each zone including a plurality of LEDs. Intensity of the LEDs of a first zone is controlled independently of the LEDs of a second zone. The controller controls the intensity of at least the first zone based upon a configuration of the adjustable optical elements. The LED module can be removed from the luminaire without removing other elements of the optical system by electrically uncoupling the LED circuit board from the controller and mechanically uncoupling the LED module from the luminaire.

Abstract: An LED module is provided that includes an LED circuit board having a substrate and an array of LEDs and an electrical connector mounted on the substrate. The LED module can be removed from an optical system of a luminaire by electrically uncoupling the LED circuit board from the luminaire and mechanically uncoupling the LED module from the luminaire without removing other elements of the optical system from the luminaire. A luminaire is provided that includes a controller and an optical system having an LED module. The LED module has an LED circuit board electrically coupled to the controller. The LED circuit board has a substrate and an array of LEDs mounted thereon. The LED module can be removed from the luminaire without removing other elements of the optical system by electrically uncoupling the LED circuit board from the controller and mechanically uncoupling the LED module from the luminaire.