Abstract: A capacitance type rotation angle detection stage light includes a pivoting member and a supporting member for supporting the pivoting member. A reflecting grating is attached on the pivoting member, and the reflecting grating rotates along with the pivoting member. A signal grating is attached on the supporting member. The signal grating and the reflecting grating are arranged oppositely. The signal grating comprises capacitance emitting pieces, a capacitance receiving piece and shielding pieces. The reflecting grating comprises capacitance reflecting pieces that reflect signals sent from the capacitance emitting pieces to the capacitance receiving piece. Periodic excitation signals applied to the capacitance emitting pieces finally form a composite signal on the capacitance receiving piece through coupling of two pairs of capacitors that the capacitance emitting pieces and the capacitance reflecting pieces, and the capacitance reflecting pieces and the capacitance receiving piece.

Abstract: A waterproof light head structure includes a main bracket, a front cover and a rear cover respectively arranged on the front side and the rear side of the main bracket, an upper plate arranged above the main bracket, a bottom plate arranged below the main bracket, a lens assembly arranged on the main bracket via the upper plate, and a light source arranged in the main bracket. The main bracket is arranged in a cavity formed by joining the front cover and the rear cover. The front cover and the rear cover are respectively in sealed connection with the upper plate and the bottom plate, and the side edges where the front cover and the rear cover are joined are in sealed connection to form an all-around waterproof structure. The waterproof light head according to the present invention is simple in structure, while the waterproof performance is guaranteed.

Abstract: A stage light fixture with high-stable rotational positioning including a base, a pivoting arm pivoted to the base through a pivoting shaft, and a light head pivoted to the pivoting arm through another pivoting shaft. An angular detector for detecting a rotation angle of the light head and/or the pivoting arm is further provided, which includes a stator assembly and a rotor assembly oppositely arranged each other, wherein the stator assembly has a magnet exciting coil adapted to form an alternating magnetic field in a region of the stator assembly by high-frequency periodic alternating current and voltage and a receiving coil arranged in the alternating magnetic field adapted to form an induced electromotive force; and the rotor assembly is configured to change electromagnetic coupling strength between the magnet exciting coil and the receiving coil during rotation thereof relative to the stator assembly.

Abstract: A stage light fixture with high-accuracy rotary positioning includes a supporting member and a pivoting member pivoted to the supporting member. The pivoting member has at least one light source for generating a lighting effect and is driven to rotate by at least one flat motor. The flat motor includes a stator generating a magnetic field by energization, and a rotor sleeve on the stator and driven by the magnetic field. The pivoting member is fixedly connected with the rotor, and the supporting member is fixedly connected with the stator; or the pivoting member is fixedly connected with the stator, and the supporting member is fixedly connected with the rotor. With respect to the conventional rotating shaft motor, no transmission assembly is provided, a transmission error thus can be avoided to achieve more accurate positioning, and a height of the motor can further be reduced.

Abstract: A stage light fixture having light effect elements server includes a light source arranged in a light head for generating a light beam, effect sheets for generating a light effect, at least one light effect elements server for receiving the effect sheets, and at least one moving mechanism for extracting at least one of the effect sheets from the light effect elements server to move between the light effect elements server and the light beam, and can keep the extracted effect sheet in the light beam. According to the present disclosure, the moving mechanism may not always occupy the space in the direction of the light path of the light beam, but only temporarily occupy the space in the direction of the light path when the effect sheet is moved to the light path, the space thus can be fully utilized.

Abstract: An intelligent focusing method of an intelligent moving head light based on machine vision includes the following steps: prestoring coordinate positions Z21 and Z22 of the focusing assembly corresponding to stage light projection distances Smax and Smin respectively, moving the focusing assembly to a position between Z21 and Z22 after the controller receives a command to start an automatic focusing function; gradually moving the focusing assembly between Z21 and Z22 by a focusing search strategy, calculating a sharpness evaluation value Tn of a current projected image according to an image sharpness evaluation function, and determining whether Tn is greater than a preset high sharpness threshold TH if yes, completing the focusing, otherwise determining whether Tn is less than or equal to Tn-1, if yes, driving the stepper motor by the driver to operate in an opposite direction, otherwise driving the stepper motor by the driver to operate in an original direction, until Tn is greater than TH.

Abstract: A fastening component free from electrochemical corrosion includes a first fastening plate, a second fastening plate, and a fastening screw connecting them. A screw shaft of the fastening screw is penetrated through a first fastening hole of the first fastening plate and entered the second fastening hole of the second fastening plate. A head of the fastening screw is abutted against the first fastening plate and is sleeved with an isolation member for electrochemical corrosion protection. The isolation member includes an annular spacer located between the lower end face of the head and the first fastening plate, and a first segment surrounding the side wall of the head and connected to the annular spacer, and upper end face of the first segment is higher than or flush with the upper surface of the first fastening plate or the upper end face of the head in a smaller height.

Abstract: A stage light fixture with an optical parameter detection function includes a light head, a supporting arm and a case. A light source for generating a light path, a light guiding member for guiding light to deviate from the light path, and an optical parameter detector are provided in the light head. The light guiding member can be freely switched into/out of the light path via a driving mechanism. The optical parameter detector can receive and detect the light guided out by the light guiding member. According to the present invention, the light guiding member can be switched into the light path to guide the light to the optical parameter detector for detection, only when the stage light fixture is started to work, or detection is performed at an interval between operations of the stage light fixture, while switched out of the light path when in operation.

Abstract: A light fixture with redundancy protection includes a light head with a light source inside, a driving mechanism for driving the light head to change the projection direction, an angle detector for detecting the projection direction of the light head, and an original micro-control unit and a redundancy micro-control unit both being coupled to a controller. The original micro-control unit serves to receive an angle control signal from the controller and forward same to the driving mechanism, the redundancy micro-control unit serves to receive the angle control signal from the original micro-control unit or the controller, and both the original micro-control unit and the redundancy micro-control unit are coupled to the angle detector. A safety protection unit coupled to the controller is further included which is for conducting safety protection actions according to a feedback signal from the original micro-control unit or from the redundancy micro-control unit.

Abstract: A light fixture with self-test ability of sealing includes a light head with a head housing, a light source for emitting light and generating heat, and a temperature sensor and an air pressure sensor for respectively detecting the temperature and air pressure inside the head housing are provided in the head housing. A controller is further included for determining the sealing performance of the head housing based on the detection results of the temperature sensor and the air pressure sensor. The head housing is provided with a waterproof breathable valve allowing the internal space of the head housing in air communication with the external space of the light fixture. A switch is configured which is capable of switching between two states by unblocking/blocking the waterproof breathable valve to make the internal space of the head housing in air communication with the external space of the light fixture or not.

Abstract: A device for reducing jitter of a light source under low brightness is provided. A first end of the switch is for inputting a voltage, and a second end thereof is connected to one end of the inductor. The other end of the inductor is connected to the LED light source. The current control module is connected to the second end of the switch and the first end of the inductor, and a second end of the current control module is grounded. The current acquisition module is used for detecting a current and connected to the signal control module, and sends a current signal into the signal control module according to the current detected. The signal control module is connected to the switch and used for controlling the switch to be disconnected or connected according to the received current signal or a pre-set time threshold.

Abstract: An automatic control system includes a tag, a base station, a main controller, and an auxiliary controller. The tag is bound to a target and transmits a target position signal. The base station is in communication connection with the tag and receives the target position signal. The main controller includes an angle conversion module, a protocol conversion module, and a data filtering module, in which the angle conversion module is in communication connection with the base station to convert the target position signal into a first light angle control signal. The auxiliary controller includes an effect control module that transmits the light effect control signal and a second light angle control signal.

Abstract: A stage light fixture with an integrated lens holder includes a light head having a light source and a light-outgoing lens assembly, light emitted from the light source being projected through the light-outgoing lens assembly; and a support arm for supporting the light head to rotate. The light head is provided with a lens mounting ring for fastening the light-outgoing lens assembly, a support plate having a light-passing hole, and a plurality of support pillars for connecting the lens mounting ring to the support plate, which are integrally form the lens holder in an integrated form to accommodate a focusing assembly and/or an amplifying assembly. Compared to the lens holder formed by splicing metal plates, such integrated structure can reduce parts for assembly and reduce geometric tolerance due to multiple process flow, thereby achieving improved assembly accuracy. Meanwhile, the integrated lens holder can strengthen the whole strength thereof.

Abstract: A stage light fixture with a split light mixing device includes a light source for generating a light beam and a light mixing device for reflecting the light. The light mixing device includes a light guide with a gradually changing cross-sectional area and a light beam homogenizer for receiving the light beam emitted from a light output surface of the light guide. The light beam homogenizer and the light guide are independent of each other, and the cross-sectional area of the light beam homogenizer is at least 1.1 times of the cross-sectional area of the light output surface. The stage light fixture further includes a holder for clamping and fixing the light guide, and a cover fastened to the end of the holder away from the light source. The cover is configured to press the light beam homogenizer tightly to closely attach to the light output surface.

Abstract: A waterproof base convenient to maintain includes a bottom frame which is integrally die-cast formed, and an upper cover with a pivoting hole covering the bottom frame. The upper cover includes a first cover body and a second cover body which are spliced to each other. The pivoting hole is formed by jointly splicing the first cover body and the second cover body, and an oil seal for sealing the outer side of a pivoting shaft penetrated the pivoting hole is disposed at the pivoting hole. The oil seal is mounted and fixed by a mounting plate. A first sealing strip seals the first cover body, the second cover body and the mounting plate with respect to each other, the first cover body and the second cover body abut against the bottom frame, and second sealing strips are disposed at abutting positions.

Abstract: A device for reducing jitter of light source in low brightness by a vibration suppression module includes an LED light source, an inductor L, a current control module, a switch K1, a signal control module, a current acquisition module, and the vibration suppression module. The present invention can eliminate a current ripple in a rising process of a current in the LED light source, as well as suppressing current oscillations generated when the current changes suddenly, the current on the LED light source thus can rise steadily, the LED light source can be steadily brightened in a brightness adjusting process of a dark part, and a phenomenon of light flicker and jitter caused by the current oscillation and the current ripple is avoided.

Abstract: A small-sized aperture assembly includes a base plate, an optical shutter fixed to the base plate, a motor providing a driving force, a linkage mechanism with one end connected to the motor, and a transition gear located between the linkage mechanism and the optical shutter. A periphery of the optical shutter is provided with a sawtooth segment meshed with the transition gear, and the other end of the linkage mechanism is hinged to the transition gear, so that the linkage mechanism drives the transition gear to move under the driving of the motor, and enables the optical shutter to switch between a closed state and an open state.

Abstract: A waterproof light head structure of a stage light fixture includes a main bracket, a front cover and a rear cover respectively disposed at the front side and the rear side of the main bracket, and a light outgoing lens assembly disposed above the main bracket. The main bracket includes an upper support and a lower support, the upper support is mounted above the lower support and is in sealed and detachable connection with the lower support. The upper support is at least used for mounting an optical lens assembly, and the lower support is at least used for mounting an effect assembly. The main bracket is disposed in a cavity formed by joining the front cover with the rear cover, and the front cover and the rear cover are in sealed connection with the light outgoing lens assembly and the main bracket along the edges thereof.

Abstract: A method for fixing an initial brightness level of lights is provided. Gamma correction is performed on the light based on a dynamic Gamma curve. When a user adjusts brightness of the light based on the dynamic Gamma curve, a dynamic Gamma curve image is valid all the time when a set current brightness level n changes from 0 to N, and when x>0, the dynamic Gamma curve image is continuous, and accordingly, brightness of the light continuously changes gradually. Further, by calculating an initial brightness PWM critical duty ratio D of light sources, the dynamic Gamma curve is customized according to the light, so that an initial brightness level position of the light sources in the same model is fixed and unified.

Abstract: A low-noise reset control system of a light fixture includes a supporting member, a pivoting member and a driver. A limiting portion is arranged on the pivoting member, A blocking portion for limiting a rotation angle of the pivoting member is arranged on the supporting member. The system further includes an angle detector for sensing rotation angle of the pivoting member and an angle indicator for sending out indication signal when the pivoting member is at a specific angular position. In a reset process, when the pivoting member rotates in a forward direction until the limiting portion is blocked by the blocking portion, the driver brakes immediately and drives the pivoting member to rotate by a certain angle in a reverse direction at low speed, then to increase speed and continue to drive the pivoting member to rotate in the reverse direction to look for a relative initial position.