Abstract: A projection system includes a projection device, a light sensor, a control unit, and an arithmetic unit. The projection device is configured to project an image beam toward a projection surface. The light sensor is configured to sense at least one of a background beam and the image beam reflected by the projection surface and obtaining chromaticity information. The control unit is electrically connected to the projection device, and configured to control the image beam projected by the projection device. The arithmetic unit is electrically connected to the control unit and the light sensor. The arithmetic unit is configured to generate an adjustment signal according to the chromaticity information. The control unit is configured to adjust a color temperature, a brightness, and a color gamut of the image beam according to the adjustment signal. A calibration method of the projection system is also proposed.

Abstract: A method of manufacturing a light-emitting device includes a number of operations. A light-emitting element is formed. A simulation of a metasurface is performed. The metasurface is formed based on the simulation of the metasurface. The metasurface is disposed on a light-emitting side of the light-emitting element. Performing the simulation of the metasurface includes establishing a metasurface model of the metasurface, in which the metasurface model has a plurality of unit cells, and phase compensation values of the unit cells are periodically distributed with a supercell period length in a deflection direction. The phase compensation values of the unit cell are adjusted and the light source is set to simulate the multiple transmittances of the metasurface model under different phase compensation values. The phase compensation values at a peak value of transmittance are selected as process parameters of the metasurface.

Abstract: An illumination system includes a first light source module, a second light source module, a light combiner and a light homogenizing element. The light combiner is disposed on a transmission path of the first light beam and the second light beam. The first light beam enters the light combiner from the first surface and is transmitted to the second surface to emit light. The second light beam enters the light combiner from the third surface, is totally reflected on the first surface of the light combiner, and is transmitted to the second surface to emit light. The light spot of the first light beam on the light incident surface of the light homogenizing element overlaps with the light spot of the second light beam on the light incident surface of the light homogenizing element.

Abstract: A quantum dot includes a nanocrystalline core and a nanocrystalline shell. The nanocrystalline core includes a core body and a doping material that is non-uniformly doped in the core body. The core body has a sphalerite-type crystal structure, and includes at least one element from Group IB, at least one element from Group IIIA and at least one element from Group VIA. The doping material includes at least one doping element selected from the group consisting of an element from Group IB, an element from Group IIB and an element from Group IIIA. The nanocrystalline shell surrounds the nanocrystalline core and includes at least one element from Group VIA, and at least one element from one of Group IIB and Group IIIA. A method for preparing the quantum dot is also disclosed.

Abstract: The embodiments of the disclosure provide a space recognition method, an electronic device and a non-transitory computer-readable storage medium. The method includes the following steps. Sensor data for detecting obstacle positions is obtained from a sensor associated with an electronic device. A plurality of coordinates respectively corresponding to the obstacle positions are generated based on the sensor data. Boundary line information of a space surrounding the electronic device is updated according to the coordinates until an optimization condition is met for each boundary line. A spatial range of the space surrounding the electronic device is identified based on the boundary line information. The spatial range is used to guide a movement of the electronic device.

Abstract: A lighting system includes a first light source module providing a first light beam, a second light source module providing a second light beam, a beam splitting element with a first and a second side, a light condensing element, and a light homogenizing element. The beam splitting element guides the first portion of the first light beam to be output from the first side to be incident on the light homogenizing element and guides the second portion of the first light beam to be output from the second side to be incident on the light homogenizing element. The beam splitting element guides the first portion of the second light beam to be output from the first side to be incident on the light homogenizing element and guides the second portion of the second light beam to be output from the second side to be incident on the light homogenizing element.

Abstract: In some examples, an electronic device includes an audio output device, an airflow generator to generate an airflow, and a system controller to control an operational speed of the airflow generator. The electronic device further includes an audio controller to generate a noise cancellation audio output based on an indicator of the operational speed of the airflow generator provided from the system controller to the audio controller, and send the noise cancellation audio output to the audio output device to mitigate noise produced by the airflow generator.

Abstract: An electrode structure is disclosed. The electrode structure consists of a seed layer, an electrode layer formed on the seed layer and a cover layer formed on the electrode layer. This electrode structure is for application in the manufacture of a quantum dots electroluminescent device, so as to act as an anode electrode or a cathode electrode of the QD electroluminescent device. Experimental data have revealed that, there is no transmittance imbalance occurring in the QD electroluminescent device using the particularly-designed electrode structure. Moreover, the QD electroluminescent device has enhanced in the brightness, total current efficiency and EQE thereof.

Abstract: A nanocrystal array, a laser device, and a display device are provided. The nanocrystal array includes a plurality of nanorods arranged in an array. Each nanorod includes a nanorod buffer layer, a first type semiconductor layer, a tunnel junction layer, a second type semiconductor layer, a multi-quantum well, and another first type semiconductor layer successively stacked on each other. The laser device and the display device include the nanocrystal array. The present disclosure may reduce the laser threshold and increase output power, and further improve the resolution and image quality of the display device.

Abstract: A projection system and a projection method are provided. The projection system includes a digital micromirror device, a digital light processing chip, and a display processing chip. The display processing chip receives a first image signal with a variable frame rate from an external signal source, and outputs a second image signal with one of a plurality of fixed projection frame rates to the digital light processing chip according to the first image signal and one of the fixed projection frame rates supported by the projection system. The digital light processing chip drives the digital micromirror device according to the second image signal. The projection system and the projection method of the invention may realize a variable frame rate function and effectively improve smoothness of a projection image.

Abstract: The present disclosure relates to a heat exchange system, which includes a cabinet and a heat exchange apparatus. The cabinet includes a heat dissipation door and a cabinet body, and the heat dissipation door is disposed on the cabinet body. The heat exchange apparatus is disposed in the cabinet body. The heat exchange apparatus includes a heat exchange module. The heat exchange module includes a first circulation pipe and a cooling device. The first circulation pipe is in fluid communication with a heat dissipation tube component in the heat dissipation door. The cooling device includes a second circulation pipe and a plurality of dissipation fins. The second circulation pipe is heat-exchanged with the plurality of dissipation fins. The first circulation pipe is heat-exchanged with but not in fluid communication with the second circulation pipe.

Abstract: A cabinet and a heat dissipation door thereof are provided. The heat dissipation door is disposed on a cabinet body and includes a first plate, a plurality of heat dissipation sheets, and a heat dissipation tube component. A plurality of heat dissipation sheets is disposed on the first plate. The heat dissipation tube component is disposed on the first plate and includes a water inlet, a water outlet, and a plurality of heat dissipation tubes. Two ends of each of the plurality of heat dissipation tubes respectively are in fluid communication with the water inlet and the water outlet, and the plurality of heat dissipation tubes has a plurality of extending sections and at least one connecting section. The plurality of extending sections passes through the plurality of heat dissipation surfaces in sequence. At least one connecting section is connected to ends of two adjacent extending sections.

Abstract: The present disclosure relates to a heat exchange system, which includes a cabinet and a heat exchange apparatus. The cabinet includes a heat dissipation door and a cabinet body, and the heat dissipation door is disposed on the cabinet body. The heat exchange apparatus is partially disposed in the cabinet body. The heat exchange apparatus includes a heat exchange module. The heat exchange module includes a first circulation pipe and a cooling device. The first circulation pipe is in fluid communication with a heat dissipation tube component in the heat dissipation door. The cooling device includes a second circulation pipe and a chilling machine. A part of the second circulation pipe is penetrated in the chilling machine to transfer heat into the chilling machine. The first circulation pipe is heat-exchanged with but not in fluid communication with the second circulation pipe.

Abstract: The present disclosure provides a heat exchange system including a heat exchange module, a drive module, a buffer module, and a control module. The heat exchange module includes a first circulation pipe. A part of the first circulation pipe is penetrated into a cabinet. The driving module is connected to the heat exchange module and configured to drive a first fluid in the first circulation pipe to flow along the pipeline. The buffer module is in fluid communication with the first circulation pipe and includes a first control valve and a first storage space. The first control valve is between the first circulation pipe and the first storage space. The control module is electrically connected to the drive module and the buffer module. The control module includes a sensing device. The control module controls the first control valve and the drive module.

Abstract: The present disclosure relates to a heat exchange system, which includes at least one cabinet and a heat exchange apparatus. Each of the at least one cabinet includes a heat dissipation door and a cabinet body, and the heat dissipation door is disposed on the cabinet body. The heat exchange apparatus includes a heat exchange module. The heat exchange module includes a first circulation pipe and a cooling device. The first circulation pipe is in fluid communication with a heat dissipation tube component in the heat dissipation door. The cooling device includes a second circulation pipe and a chilling machine. A part of the second circulation pipe is penetrated in the chilling machine to transfer heat into the chilling machine. The first circulation pipe is heat-exchanged with but not in fluid communication with the second circulation pipe.

Abstract: The present disclosure relates to a heat exchange system, which includes a cabinet and a heat exchange apparatus. The cabinet includes a heat dissipation door and a cabinet body, and the heat dissipation door is disposed on the cabinet body. The heat exchange apparatus is disposed in the cabinet body. The heat exchange apparatus includes a heat exchange module. The heat exchange module includes a first circulation pipe and a cooling device. The first circulation pipe is in fluid communication with a heat dissipation tube component in the heat dissipation door. The cooling device includes a second circulation pipe, a compression heat exchange component, a plurality of heat dissipation fins, and a control component. The second circulation pipe is heat-exchanged with but not in fluid communication with the first circulation pipe.

Abstract: A projection apparatus, an illumination apparatus thereof, and a light source driving method thereof are provided. A control module converts a bit control signal into first light source timing signals, converts the first light source timing signals into second light source timing signals according to a lookup table, generates a driving current corresponding to each light source according to the lookup table, outputs second light source driving signals corresponding to the light sources according to the second light source timing signals. The lookup table includes a driving current ratio corresponding to the light sources. A driving module drives the light sources according to the second light source driving signals and the driving current for the light sources to have overlapping light-emitting timings.

Abstract: In example implementations, an apparatus is provided. The apparatus includes an interface, a previous generation carrier connected to the interface, a controller communicatively coupled to the interface, and a basic input/output system (BIOS). The previous generation carrier includes a current generation memory card. The controller is to detect the previous generation carrier. The BIOS is to set the interface to operate at a speed associated with the previous generation carrier in response to detection of the previous generation carrier.

Abstract: An imaging system configured to convert an illumination beam into an image beam includes a first prism including a first surface and a second surface, a second prism, and a light valve. An included angle between the first surface and the second surface is an acute angle. The illumination beam is sequentially transmitted to the first prism, the second prism, and the light valve. The light valve is configured to convert the illumination beam into the image beam, and the image beam is then transmitted to and passes the second prism. A first incident direction of the illumination beam incident on the first prism is perpendicular to a first exit direction of the illumination beam exiting from the first prism. Beam cross-sectional areas of the illumination beam before incident on and after exiting from the first prism are different. A projection apparatus including the imaging system is also provided.

Abstract: A quantum dot structure includes a core and an inner shell. The core is a single crystal of a compound M1C1, and has a core surface having a first region and a second region. The first region has a crystal plane that is inactive with oxygen, and the second region has a crystal plane that is easily reactive with oxygen. The inner shell is a single crystal of a compound M2C2, and is formed on the first region of the core surface. A method for making the quantum dot structure is also disclosed.