Abstract: A projection system and a control method are provided. The projection system includes an image control device and a projector. The image control device stores an application and includes a first communication port. The image control device is configured to execute the application to generate a control signal. The first communication port includes at least one of a teletype serial (TTYS) interface and a universal serial bus (USB) interface. The image control device is configured to transmit the control signal to a second communication port of the projector through the first communication port, so that the projector executes a function corresponding to the control signal.

Abstract: A projection device and an image processing module are provided. The image processing module is configured to receive an image signal. The image signal includes multiple sub-image signals. Each of the sub-image signals corresponds to multiple pixels. The pixels form a pixel shifting unit. The image processing module generates flicker data based on contrast in the pixel shifting unit, and generates an output image signal based on the flicker data and a first brightness signal corresponding to brightness of the image signal.

Abstract: A projector system, including a first projector and at least one second projector, is provided. The first projector broadcasts first data to each of the at least one second projector in response to a first input operation applied to a first input/output unit. A second processor of each of the at least one second projector broadcasts corresponding second data to other projectors among multiple projectors in response to receiving the first data. Each of the projectors determines whether there is an up-to-date firmware file according to the first data and the at least one second data to transmit the up-to-date firmware file to corresponding at least one other projector among the projectors. Each of the at least one other projector receives the up-to-date firmware file to perform a firmware update.

Abstract: A heat-dissipating module including heat-dissipating fins and heat pipes is provided. The heat-dissipating fins include first and second heat-dissipating fins arranged in an interleaved, spaced apart manner, and arranged in parallel along a first direction. The first heat-dissipating fins have interleaved first vias and first breach holes. The second heat-dissipating fins have interleaved second vias and second breach hole. The first breach holes and the second breach holes are arranged along a second direction, and the second vias respectively correspond to the first vias. The first direction is not parallel to the second direction. The heat pipes are configured to pass through the first vias and the second vias. A position of the orthogonal projection of a first breach hole formed on the second heat-dissipating fins along the first direction and the corresponding second breach hole are not overlap or are partially overlapped, and are arranged in symmetry.

Abstract: A heat dissipation module, configured for heat dissipation of at least one first heat source and at least one second heat source, and including a first heat sink, a second heat sink, a first pipe, and a second pipe, is provided. The first heat sink and the first heat source are connected to each other through the first pipe to form a first loop, so that a liquid medium flows through the first heat sink for heat exchange and then flows to the first heat source for circulating heat dissipation. The second heat sink and the second heat source are connected to each other through the second pipe to form a second loop, so that the liquid medium flows through the second heat sink for heat exchange and then flows to the second heat source for circulating heat dissipation. A projection device, including the heat dissipation module, is also provided.

Abstract: A projection system, a projection device, and a control method thereof are provided. The control method of the projection device includes the following steps: transmitting a first original command by a terminal device; projecting an adjustment image by the projection device in response to the first original command corresponding to an image correction operation of the projection device, wherein the adjustment image includes at least one pattern array and at least one adjustment reference point; transmitting a second original command by the terminal device; and adjusting a position of the at least one adjustment reference point of the adjustment image by the projection device in response to the second original command corresponding to adjusting the position of the at least one adjustment reference point of the adjustment image, wherein the at least one adjustment reference point is located in the corresponding at least one pattern array.

Abstract: In a projection device and a light source system thereof, the light source system includes a light source module, a driver, and a control circuit. The light source module includes light sources to provide beams with different wavelength ranges. According to a selection signal, the control circuit selects one of a first pulse width modulation signal, a second pulse width modulation signal, and a third pulse width modulation signal as a pulse width modulation signal to output to the driver. The driver drives the light source corresponding to the selection signal with the pulse width modulation signal provided by the control circuit.

Abstract: A driving circuit for driving a light source and a projection device are provided. The driving circuit includes a power converter, a detection circuit, and a control circuit. The power converter provides a driving power to the light source. The detection circuit provides a feedback signal according to a current value of the light source. The control circuit receives an operation command and the feedback signal. The control circuit determines whether the driving circuit enters a light-load state according to at least one of the operation command and the feedback signal. When the driving circuit is determined to enter the light-load state, the control circuit controls the power converter to decrease a current value of the driving power and controls the power converter to increase a switching frequency of the driving power. The driving circuit and the projection device may prevent the light source from flickering under the light-load state.

Abstract: A light source module, which includes a heat sink, a laser assembly, a circuit board assembly, a conductive material, and multiple lock members, is provided. The circuit board assembly includes a circuit board, which has an accommodating opening that corresponds to a beam emitter of the laser assembly. The lock members respectively pass through third lock holes of the circuit board assembly, second lock holes of the laser assembly, and first lock holes of the heat sink in sequence, thereby locking the circuit board assembly and the laser assembly on the heat sink. The accommodating opening of the circuit board exposes the beam emitter, and the conductive material connects two conductive pads of the laser assembly to two corresponding electroplated through holes, thereby enabling the laser assembly to be electrically connected to the circuit board assembly. A projector including the light source module is also provided.

Abstract: An optical film includes a grid layer having a first surface, a second surface, light-shading portions, and light-transmitting portions. The light-shading portions and the light-transmitting portions are located between the first surface and the second surface, and the light-shading portions and the light-transmitting portions are alternately arranged along the first surface. Each light-shading portion has a third surface, a fourth surface, a fifth surface, a sixth surface, and a seventh surface. An angle between the fourth and third surfaces is A1, an angle between the fifth and third surfaces is A2, an angle between the sixth and second surfaces is A3, and an angle between the seventh and second surfaces is A4. Wherein 85°<A1?90°, 85°<A2?90°, 0°<A3<85°, 0°<A4<85°, A2?A4, and A1?A3. A display device is also provided.

Abstract: Disclosed is a display device including a front light module, a first polarizing module, and a reflective display unit. A light guide plate is located between the first polarizing module and the reflective display unit. The front light module includes a light guide plate and a light source. The light source is disposed next to a light incident surface of the light guide plate. The first polarizing module includes a first polarizer and a first quarter wave plate, where the first quarter wave plate is located between the light guide plate and the first polarizer. There is a first air gap layer between the light guide plate and the first quarter wave plate. The display device disclosed has good optical efficiency and contrast.

Abstract: A projection apparatus includes an illumination system, a prism assembly, a first light valve, a second light valve and a projection lens. The illumination system includes a blue light emitting element, a red light emitting element, a wavelength conversion device, a dichroic assembly, a first light diffusing element and a second light diffusing element. The second light diffusing element has a diffusion area and a non-diffusion area. The diffusion area is located on a transmission path of a blue beam from the dichroic assembly, and the non-diffusion area is located on a transmission path of a green beam from the dichroic assembly. The prism assembly has a dichroic film. The dichroic film is configured to transmit a red beam to the first light valve. The dichroic film is configured to transmit the green beam and the blue beam to the second light valve.

Abstract: A light guide element includes first and second surfaces, a light-incident surface, and microstructure groups arranged on the first surface. Each microstructure group includes a first microstructure and a second microstructure separated from and being mirror image structures of each other. A first intersection line is provided between a first light-receiving surface of the first microstructure and the first surface. A first distance is provided between the first intersection line and a light-incident intersection line in a first direction. A second intersection line is provided between a second light-receiving surface of the second microstructure and the first surface. A second distance is provided between the second intersection line and the light-incident intersection line in the first direction. A variation trend of the first distance in a second direction is opposite to a variation trend of the second distance in the second direction.

Abstract: A backlight module includes a light source, a first prism sheet disposed on the light source, and a light type adjustment sheet disposed on a side of the first prism sheet away from the light source and including a base and multiple light type adjustment structures. The multiple light type adjustment structures are disposed on the first surface of the base. Each light type adjustment structure has a first structure surface and a second structure surface connected to each other. The first structure surface of each light type adjustment structure and the first surface of the base form a first base angle therebetween, and the second structure surface of each light type adjustment structure and the first surface of the base form a second base angle therebetween. The angle of the first base angle is different from the angle of the second base angle.

Abstract: A heat dissipation module includes an airflow generator, a heat dissipation substrate connected to a heat source, a heat dissipation member, a baffle, and a heat conductive member connected to the heat dissipation substrate. The heat dissipation member includes a main body and first fins arranged around an outer periphery of the main body and forming an accommodation space with the main body. The airflow generator has a rotation axis, and is accommodated in the accommodation space and connected to the main body. The baffle is connected to the first fins and has an opening corresponded to an air inlet surface of the airflow generator. On a reference plane perpendicular to the rotation axis, at least a part of an orthographic projection of each first fin does not overlap an orthographic projection of the airflow generator, and an orthographic projection of the baffle overlaps the orthographic projections of the first fins.

Abstract: An electronic system and a control method thereof are provided. The electronic system includes a projection device and at least one peripheral device. The control method of the electronic system includes: sending an original instruction to a natural language model through the projection device, wherein the projection device has a communication interface and is communicatively connected to the at least one peripheral device through the communication interface; in response to the original instruction corresponding to an operation of the at least one peripheral device, generating at least one standard instruction according to the original instruction through the natural language model; and controlling the at least one peripheral device through the projection device to perform the operation corresponding to the original instruction according to the at least one standard instruction.

Abstract: An illumination system includes a first light source, a second light source, a light combining module, and a wavelength conversion element. The first light source is configured to provide a first beam. The second light source is configured to provide a second beam. The light combining module is disposed on a transmission path of the first beam from the first light source and the second beam from the second light source. The wavelength conversion element includes a rotary disk, a wavelength conversion material layer, and a light splitting layer. The light splitting layer is disposed on the rotary disk. The wavelength conversion material layer is disposed between the rotary disk and the light splitting layer, and is configured to convert the first beam into an excited beam. The light splitting layer is configured to reflect the second beam and allow the first beam and the excited beam to pass through.

Abstract: An electrically controlled panel including a first electrically controlled device including first and second alignment layers and a first liquid-crystal layer disposed therebetween, a first polarizing layer, and a first compensation film disposed at a side of the first polarizing layer provided with the first electrically controlled device is provided. The first and second alignment layers have first and second alignment directions respectively. An included angle between the first and second alignment directions is between 75 degrees and 105 degrees. A phase retardation of the first liquid-crystal layer is between 400 nm and 600 nm or between 800 nm and 1200 nm. The first polarizing layer is disposed at a side of the first alignment layer away from the first liquid-crystal layer, and has a first absorption axis parallel to or perpendicular to the first alignment direction. A display apparatus adopting the electrically controlled panel is also provided.

Abstract: A head-mounted display including an image generator, a projection lens, and a waveguide is provided. The image generator is configured to provide an image beam. The projection lens is disposed on a path of the image beam. The projection lens has an image side and an object side. The image generator is configured at the image side. The projection lens includes a first lens element and a lens element group. The lens element group is disposed between the image generator and the first lens element. A first central axis of the first lens element and a second central axis of the lens element group are not overlapped. The waveguide is disposed on the path of the image beam and located at the object side of the projection lens.

Abstract: A stereoscopic display system and a control method of the stereoscopic display system are provided. A rotation device is controlled to rotate at 2n times an image input frequency, so that the rotation device respectively completes n rotations during a period in which stereoscopic glasses receive a left-eye image and a period in which the stereoscopic glasses receive a right-eye image.