Abstract: The present disclosure discloses a lighting device for plant growth, comprising: a lamp, a lifting mechanism, at least two sensing mechanisms and a control mechanism. A light-emitting module is disposed on the bottom surface of the lamp and two ends of the lifting mechanism are coupled to the top surface of the lamp and the control mechanism respectively. Each sensing mechanisms is disposed at the bottom of the lamp. The control mechanism comprises a timing module. When the sensing mechanisms operate that form a signal sensing path and sense a plant to generate a sensing signal, the control mechanism may drive the lifting mechanism according to the sensing signal to control the longitudinal displacement of the lamp. Through the automatic detection and position lifting function, it is possible to provide suitable light sources for plants at different growth stages.

Abstract: An electronic circuit for online monitoring a clock signal is provided. The electronic circuit includes a period-to-pulse converter, a pulse-shrinking block and an encoder. The period-to-pulse converter receives the clock signal outputted by a phase-locked loop, and converts each of a plurality of clock period samples of the clock signal to generate a pulse-train signal having a plurality of pulses. The pulse-shrinking block receives the plurality of pulses of the pulse-train signal, and generates a plurality of catch bits by shrinking the plurality of pulses of the pulse-train signal. The encoder outputs a minimum code denoting a minimum clock period of the clock signal and a maximum code denoting a maximum clock period of the clock signal according to the plurality of catch bits. The electronic circuit subtracts the maximum code and the minimum code to generate a peak-to-peak jitter amount code.

Abstract: An electronic circuit for online monitoring a clock signal is provided. The electronic circuit includes a period-to-pulse converter, a pulse-shrinking block and an encoder. The period-to-pulse converter receives the clock signal outputted by a phase-locked loop, and converts each of a plurality of clock period samples of the clock signal to generate a pulse-train signal having a plurality of pulses. The pulse-shrinking block receives the plurality of pulses of the pulse-train signal, and generates a plurality of catch bits by shrinking the plurality of pulses of the pulse-train signal. The encoder outputs a minimum code denoting a minimum clock period of the clock signal and a maximum code denoting a maximum clock period of the clock signal according to the plurality of catch bits. The electronic circuit subtracts the maximum code and the minimum code to generate a peak-to-peak jitter amount code.

Abstract: An optical module, including a first frame, a second frames, an optical element, a first driving module, and a second driving module, is provided. The first frame is connected to a base. The second frame is connected to and located in the first frame. The optical element is disposed in the second frame. The first driving module is disposed between the base and the first frame to drive the first frame to oscillate around a first rotating axis. The second driving module is disposed between the first and second frames to drive the second frame to oscillate around a second rotating axis. The first and second rotating axes are perpendicular to an optical axis of the optical element, and not parallel. An overall dimension of the second driving module is less than that of the first driving module. A projection device having the optical module is also provided.

Abstract: A heat dissipation module is provided and includes a cold plate having a housing, and a frame body disposed on the housing and having two sidewalls and at least one first rib, where the two sidewalls are positioned at two sides of the housing, respectively, and the first rib is used to provide a deformation resistance so that the heat dissipation module will not be seriously deformed when secured.

Abstract: The invention provides an optical module and a projector to which the optical module is applied. The optical module provided in the invention includes a first frame, a second frame, and a light-transmissive plate. The first frame includes at least one first axial part. The first frame is configured to oscillate with the at least one first axial part as a rotation axis. The second frame is disposed in the first frame and includes at least one second axial part. The second frame is connected to the first frame via the at least one second axial part and is configured to oscillate with respect to the first frame with the at least one second axial part as a rotation axis. The light-transmissive plate is disposed in the second frame.

Abstract: A server device is provided. The server device includes a substrate, a first server module, a first cable, a second server module and a second cable. The first server module includes a first server board and a first recognition unit, wherein the first recognition unit is connected to the first server board. The first cable is connected to the substrate, wherein the first cable is connected to the first recognition unit, and the first recognition unit generates a first recognition signal. The second server module includes a second server board and a second recognition unit. The second recognition unit is connected to the second server board. The second cable is connected to the substrate. The second cable is connected to the second recognition unit, and the second recognition unit generates a second recognition signal. The server device determines whether the server module is coupled to the correct joint.

Abstract: An optical module, including a first frame, a second frames, an optical element, a first driving module, and a second driving module, is provided. The first frame is connected to a base. The second frame is connected to and located in the first frame. The optical element is disposed in the second frame. The first driving module is disposed between the base and the first frame to drive the first frame to oscillate around a first rotating axis. The second driving module is disposed between the first and second frames to drive the second frame to oscillate around a second rotating axis. The first and second rotating axes are perpendicular to an optical axis of the optical element, and not parallel. An overall dimension of the second driving module is less than that of the first driving module. A projection device having the optical module is also provided.

Abstract: An optical module including a base and a rotating structure is provided. The rotating structure includes a frame and an optical element. The frame has at least one shaft portion. The frame is connected to the base through the shaft portion, and is configured to oscillate relative to the base along a rotation axis by taking the shaft portion as a rotating shaft. The optical element is disposed within the frame. The rotation axis passes through a center of gravity of the rotating structure. In addition, a projector having the optical module is also provided. The invention can prevent the rotating structure of the optical module from having an excessive rotational inertia.

Abstract: An optical module including a transparent component and at least one coil device is provided. The at least one coil device is connected to the transparent component and includes a main body and at least one extending wire. The at least one extending wire is extended out from the main body, the at least one coil device is adapted to be driven by a magnetic force to vibrate along at least one rotation axis, and a length of the at least one extending wire is in positive correlation with a width of the transparent component along a direction. The direction is perpendicular to the at least one rotation axis and perpendicular to an optical axis of the transparent component. In addition, a projector having the optical module is also provided.

Abstract: A coolant distribution unit includes a casing, a control module, a power supply module, a heat exchange module, and a fluid driving module. The power supply module is electrically connected to the control module, the fluid driving module is electrically connected to the control module and the power supply module, and the fluid driving module is in fluid communication with the heat exchange module. The control module, power supply module, heat exchange module, and fluid driving module are all arranged in the casing. In addition, the control module controls the power supply module to output a corresponding electrical power to the fluid driving module according to an operation status of the fluid driving module.

Abstract: The invention provides an optical module and a projection apparatus. The optical module includes a base, a first frame, an optical element, and at least one first driving assembly. The first frame is disposed in the base and includes a first body and a pair of first shaft portions, the first shaft portion extending outward from the first body, and the first body including a pair of first inner folded edges. The optical element is disposed between the pair of first inner folded edges. The first driving assembly and the optical element abut against two opposite sides of one of the first inner folded edges, respectively, and the first driving assembly is configured to drive the first body to swing relative to the base by taking the first shaft portion as a rotating shaft.

Abstract: A projection device including a lens module and an actuating module is provided. The lens module includes at least one lens and is used for transferring an image beam. The actuating module is disposed beside the lens module, and is relatively close to the at least one lens. The actuating module includes a frame, a transparent element and at least one actuator. The transparent element is fixed on the frame. The actuator is disposed on at least one side edge of the frame, and is connected to the frame. In a light emission direction of the lens module, an orthographic projection of the actuator on a first reference plane does not overlap with an orthographic projection of the at least one lens on the first reference plane.

Abstract: A plant growth control method of the invention includes the following steps: providing a first light during a nursery stage of a plant, wherein the first light has a ratio in photosynthetic photon flux density of R:G:B:NIR:UV of 1.1˜1.5:0.8˜1.7:1:0:0.1˜1; providing a second light during a growth stage of a plant, wherein the second light has a ratio in photosynthetic photon flux density of R:G:B:NIR:UV of 1.2˜4:0.9˜2:1:0.2˜0.6:0˜0.2; and providing a third light in an pre-harvest stage of a plant, wherein the third light has a ratio in photosynthetic photon flux density of R:G:B:NIR:UV of 0.7˜4.9:0.5˜2.1:1:0.2˜0.6:0˜2.

Abstract: Disclosed is an optical device, comprising a supporting structure, at least one first driving element, at least one second driving element and a light-transmitting plate body. The supporting structure has a first side and a second side opposing each other and comprises a base and a frame mutually connected to each other, the base has at least one first supporting part, the frame has at least one second supporting part and at least one third supporting part, the first supporting part and the second supporting part are positioned on the first side, and the third supporting part is positioned on the second side. Furthermore, an optical module having the above optical device is disclosed. The optical device of the invention may be properly installed in a limited space inside a projector.

Abstract: The invention provides a projection device, comprising an illumination system, a light valve, a light guide element, an optical module and a projection lens. The optical module comprises a fixed portion, a first frame body, at least one first driving element and an optical element. The first frame body is pivoted to the fixed portion and comprises a first side and other three second sides. The first driving element is configured on at least one of the other three second sides and configured to drive the first frame body to oscillate back and forth. A first virtual plane of the projection lens intersects with a second virtual plane of the light valve to form a virtual line segment. The distance between the first side and the virtual line segment is shorter than the distance between the other three second sides and the virtual line segment.

Abstract: An optical module includes a frame body and an optical element. The frame body includes at least one fixing portion, at least one frame portion and at least one shaft portion connected to the fixing portion and the frame portion. The frame portion includes at least one main body, a plurality of positioning structures and at least one reinforcement structure. A part of an inner side surface of the main body is bended toward a thickness direction of the frame body to form the positioning structures, and the reinforcement structure is connected to the main body and extends in the thickness direction. The frame portion oscillates relative to the fixing portion around the shaft portion. In the thickness direction, a sum of a height of the reinforcement structure and a thickness of the main body is greater than a thickness of the shaft portion.

Abstract: The invention provides a projection device, comprising an illumination system, a light valve, a light guide element, an optical module and a projection lens. The optical module comprises a fixed portion, a first frame body, at least one first driving element and an optical element. The first frame body is pivoted to the fixed portion and comprises a first side and other three second sides. The first driving element is configured on at least one of the other three second sides and configured to drive the first frame body to oscillate back and forth. A first virtual plane of the projection lens intersects with a second virtual plane of the light valve to form a virtual line segment. The distance between the first side and the virtual line segment is shorter than the distance between the other three second sides and the virtual line segment.

Abstract: An imaging module includes a display element and an image displacement device. The display element includes an active display surface adapted to receive an illumination beam, convert the illumination beam into an image beam, and transmit the image beam. The image displacement device includes an optical element located on a transmission path of the image beam and adapted to allow the image beam to pass therethrough, a carrier, a base and at least one actuator, wherein the optical element is disposed on the carrier, the at least one actuator is disposed on the base, one end of the at least one actuator is connected to the carrier to drive the optical element on the carrier to swing relative to the base, and an orthographic projection area of the at least one actuator on a reference plane does not overlap with an orthographic projection area of the active display surface.

Abstract: An optical module including a base and a rotating structure is provided. The rotating structure includes a frame and an optical element. The frame has at least one shaft portion. The frame is connected to the base through the shaft portion, and is configured to oscillate relative to the base along a rotation axis by taking the shaft portion as a rotating shaft. The optical element is disposed within the frame. The rotation axis passes through a center of gravity of the rotating structure. In addition, a projector having the optical module is also provided. The invention can prevent the rotating structure of the optical module from having an excessive rotational inertia.