Abstract: An eye-protecting display apparatus including a display panel, a sensor, and a controller is provided. The display panel is configured to provide a display frame. The sensor is configured to sense a plurality of users around the display panel. The controller is electrically connected to the sensor and the display panel and configured to receive and analyze a signal from the sensor. The controller is configured to divide the users into a lecturer and an audience, analyze an area of the display panel sheltered by the lecturer by distances of the lecturer and the audience relative to the display panel and a position and angle relationship therebetween, and adaptively adjust a brightness or a blue light proportion of at least a portion of the area. An eye-protecting display method is also provided.

Abstract: A landing/takeoff response system and method for an UAV, including a fuselage having a housing and a flight power module connected to the fuselage, are provided. The system includes a first sensor for detecting a first sensing information, at least one second sensor for detecting a second sensing information, and a processing unit coupled to the first sensor and the second sensor. The first sensor is disposed on a bottom portion of the housing at a position below a center of gravity of the UAV. The second sensor is disposed on a side portion of the housing adjacent to the bottom portion. The processing unit is configured to: determine whether the first sensing information satisfies a first contact condition to determine a landing/takeoff operation of the UAV; and determine whether the second sensing information satisfies a second contact condition to determine an on/off status of the flight power module.

Abstract: Disclosed is an illumination system configured to provide an illumination light beam. The illumination system includes a light source module, a lens module, and a curved reflector. The light source module is configured to generate a light beam. The lens module is disposed on a transmission path of the light beam. The curved reflector is disposed on the transmission path of the light beam. The light beam is emitted sequentially from the light source module, passes through the lens module, and is reflected by the curved reflector to form the illumination light beam. A ratio between an effective focal length of the curved reflector and an effective focal length of the lens module falls within a range of 1 to 3. A projection device is also provided.

Abstract: An afocal optical element adapted to reduce a beam diameter of a light beam is provided. The afocal optical element includes an object-side surface facing an object-side through which the light beam passes and an image-side surface facing an image-side through which the light beam passes. The object-side surface is convex, and the image-side surface is concave. The afocal optical element has only one lens element. In addition, a projection device is also provided.

Abstract: An unmanned aerial vehicle includes a body, a shaft base, an arm, and a clamping assembly. The shaft base is disposed outside the body. The arm is pivotally disposed on the shaft base and is movably close to the body or unfolded from the body. The clamping assembly is movably and pivotally disposed on the shaft base and surrounds a periphery of the shaft base. When the arm is close to the body, the arm is limited between the body and the clamping assembly. During an unfolding process of the arm, the clamping assembly is pushed by the arm to be pivotally rotated on the shaft base. When the arm is unfolded from the body, the clamping assembly clamps the arm along a radial direction of the arm by an elastic force.

Abstract: An unmanned vehicle includes a body and a plurality of battery packs. The battery packs are detachably stacked on the body, wherein the body sequentially uses the power of the battery packs in an anti-gravity direction.

Abstract: Embodiments of the disclosure provide an unmanned vehicle system, including a plurality of unmanned vehicles. The plurality of unmanned vehicles include a first unmanned vehicle and a second unmanned vehicle. The first unmanned vehicle provides an information pattern, wherein the information pattern indicates a control information. The second unmanned vehicle acquires the control information by identifying the information pattern.

Abstract: A projection device, a control circuit and a control method thereof are provided. The control circuit includes a plurality of voltage level shifters and an operation circuit. The voltage level shifters respectively receive a plurality of selection signals, and shift peak voltages of the selection signals to generate a plurality of processed signals. The operation circuit executes signal decoding operation to generate a plurality of strobe signals according to the processed signals. The operation circuit respectively provides the strobe signals to a plurality of drivers of a driving device, so that the drivers respectively generate a plurality of driving signals.

Abstract: A non-contact voltage measuring method and a non-contact voltage measuring system are provided. The non-contact voltage measuring method includes the following steps: measuring a voltage signal source to be measured through a capacitive coupling structure to generate a measurement signal; generating an output signal based on the measurement signal through a signal processing circuit; analyzing the output signal through a sampling unit to generate a sampled signal; and outputting the sampled signal to the trained artificial intelligence model, so that the trained artificial intelligence model outputs a recovery signal.

Abstract: A projection device includes a plurality of solid-state lighting sources driven by a DC drive power to sequentially provide a first light generated by a first number of light sources, a second light generated by a second number of light sources and a third light generated by a third number of light sources within a response cycle; and a color wheel having a first block, a second block and a third block, respectively corresponding to the first to third lights, so that the projection device sequentially outputs a first color light with a first brightness, a second color light with a second brightness and a third color light with a third brightness. The brightness of the first to third lights is controlled by number of light sources to be turn on.

Abstract: An electronic apparatus includes a main circuit board, a seat body, a detachable element and a detection element. The seat body is disposed on the main circuit board and includes an opening and a conductive structure located in the opening. The detection element is disposed on the detachable element and includes an elastic conductive member. The elastic conductive member is adapted to extend into the opening, apply an elastic force to the seat body in the opening, and electrically contact the conductive structure. The main circuit board is adapted to determine that the seat body and the detection element are in a first state or a second state. The first state includes that the elastic conductive member electrically contacts the conductive structure. The second state includes that the elastic conductive member is separated from the conductive structure.

Abstract: The disclosure provides a driving device and a driving method for a light-emitting element. The driving device includes a driving circuit, a softstart circuit, and a capacitor. An output terminal of the softstart circuit is coupled to the capacitor and the driving circuit to provide a dimming voltage. A driving signal output by the driving circuit drives a light-emitting element circuit. The driving circuit is enabled or disabled based on an enabling signal. Based on a relationship between the dimming voltage and current information of the light-emitting element circuit, the driving circuit dynamically adjusts a duty cycle of the driving signal. In response to the enabling signal disabling the driving circuit, the softstart circuit pulls down an original adjustment voltage to generate a pulled-down voltage as the dimming voltage. In response to the enabling signal enabling the driving circuit, the softstart circuit pulls up the dimming voltage.

Abstract: A light source module includes a wavelength conversion unit, a first lens, a second lens, a light path turning device, and a light-emitting device. The first lens is disposed in front of the wavelength conversion unit. The second lens is disposed in front of the first lens. The light path turning device is disposed beside the second lens, and not on an optical axis of the first lens. The light-emitting device is configured to emit a first beam. The first beam is sequentially turned by the light path turning device and penetrates through the first lens to be transmitted to the wavelength conversion unit. The wavelength conversion unit is configured to convert the first beam into a second beam. A wavelength of the first beam is different from that of the second beam. The second beam penetrates through the first lens and the second lens sequentially.

Abstract: A multifunctional probe includes a hand-held housing, a signal detector and an array probe. The signal detector is flexibly disposed on the hand-held housing or at its first end. The array probe is disposed at one end (e.g., second end) of the hand-held housing and electrically coupled to the signal detector. The first contact time of the signal detector in contact with the living body may at least partially overlap with the second contact time of the array probe in contact with the living body. The signal detector and the array probe generate the first electronic signal. The multifunctional probe includes a flexibly-connected signal detector and an array probe, which can contact and/or detect the living body at the same time. Thus, the detection efficiency and accuracy are effectively increased. A detection method applied to the multifunctional probe is also provided.

Abstract: An illumination module includes a light source, a reflective light valve, a lens, and a diffuser. The light source is configured to emit an illumination beam. The reflective light valve is disposed on a path of the illumination beam, and includes multiple pixels. A pixel in a first state among the pixels is configured to reflect the illumination beam into an effective beam. A pixel in a second state among the pixels is configured to reflect the illumination beam into an auxiliary beam. The lens is disposed on a path of the effective beam, and configured to project the effective beam to an area to be illuminated. The diffuser is configured to diffuse the auxiliary beam from the reflective light valve into a diffused light. The lens is configured to project the diffused light to the area to be illuminated.

Abstract: A vehicle auxiliary apparatus and a vehicle auxiliary method are provided. The vehicle auxiliary apparatus includes: a first optical sensor disposed on a first side in a moving direction of a vehicle, a second optical sensor disposed on a second side different from the first side in the moving direction of the vehicle, a projection system, and a processor. The processor is configured to measure a first vehicle speed of a first moving vehicle other than the vehicle through the first optical sensor, measure a second vehicle speed of a second moving vehicle other than the vehicle through the second optical sensor, and control the projection system to perform a warning projection within a projection range based on the first vehicle speed, the second vehicle speed, and a vehicle speed of the vehicle.

Abstract: An optical machine module includes an optical machine housing and at least one reflector adjustment mechanism. The reflector adjustment mechanism includes an adjustment base movably disposed in the optical machine housing, at least one reflector disposed on the adjustment base, a fulcrum adjustment member including a fulcrum adjustment part located outside the optical machine housing and a fulcrum connection part extending into the optical machine housing and adjustably connected to a center of the adjustment base, a first axial adjustment member including a first axial adjustment part and a first connection part, and a second axial adjustment member including a second axial adjustment part and a second connection part. The first and second axial adjustment parts are located outside the optical machine housing. The first and second connection parts extend into the optical machine housing and are adjustably connected to the adjustment base.

Abstract: A movable door structure includes a bracket, a door panel, and an elastic element. The bracket disposed in a machine shell includes at least one curved slide rail including a first section and a second section communicating with each other. There is a bending angle between a first extension direction of the first section and a second extension direction of the second section. The door panel disposed on the bracket is suitable for sliding along the at least one curved slide rail. When the elastic element connected between an inner surface of the door panel and an abutment portion of the machine shell pushes against the door panel, so that the door panel is located at a first position, the door panel covers an opening of the machine shell, and an exterior surface of the door panel is aligned with an outer surface of the machine shell.

Abstract: A projection apparatus configured to project an image frame onto a projected plane is provided. The projection apparatus includes an image source, a projection lens, a time-of-flight ranging sensor (ToF ranging sensor), and a controller. The image source is configured to emit an image beam. The projection lens is configured to project the image beam onto the projected plane to form the image frame. The ToF ranging sensor is configured to measure a distance from the projected plane. The controller is configured to set a sampling range of the ToF ranging sensor and obtain a plurality sets of distance information of measured points on the projected plane by moving the sampling range of the ToF ranging sensor, and adjust a focal distance of the projection lens according to the sets of distance information through the controller. A projecting method is also provided.

Abstract: A lamp device applicable to a display includes a lamp main body, a lamp arm component, a lamp light component and a fixing base. The fixing base is arranged on the back surface of the display, so that the lamp main body can be positioned on the fixing base to be arranged on the back surface. When the lamp arm component is rotated to the first position relative to the lamp main body, the lamp light component has a first height relative to the display, so that a first use state is provided. When the lamp arm component is rotated to the second position relative to the lamp main body, the lamp light component can be detached from the lamp arm component and then reversely installed thereon. The lamp light component has a second height different relative to the display, so that a second use state is provided.