Abstract: A fan impeller structure includes a hub having a top and a sidewall; and a plurality of blades being circumferentially spaced on the sidewall. Each of the blades has a barrier zone formed at a tip portion of the blade; the barrier zone is used to prevent or block fluid at a lower side of the blade to turn over to an upper side of the blade owing to a difference in the pressure distributed over the upper and the lower side of the blade. Therefore, when a fan using the fan impeller structure is operating, the fan is able to maintain constant air flow and static efficiency to largely reduce vortices formed at the tip portions of the blades (also referred to as wingtip vortices) and accordingly, to reduce the occurrence of aerodynamic noise.

Abstract: A fan blade structure includes a plurality of blades circumferentially spaced on a sidewall of a hub. The hub has upper and lower surfaces, which are downwind and upwind side, respectively; a front and a rear edge sequentially arranged in a rotation direction of the blade; and a root portion and a tip portion. Areas of the blade located between the tip and the root portion are divided into at least one first section located adjacent to the tip portion and one second section located between the first section and the root portion. The second section may have a thickness larger than or smaller than that of the first section, such that a stepped configuration is formed on the upwind side of the blade to provide a height difference thereon, which can effectively decrease flow resistance to reduce fan power consumption and upgrade fan efficiency.

Abstract: A fan frame body structure includes a first frame body. The first frame body has a first upper end, a first lower end, a first frame wall and a first main flow way. The first main flow way passes through the first frame body and is formed with a first main inlet and a first main outlet respectively at the first upper end and the first lower end. A first subsidiary flow way is disposed in the first frame wall. The first subsidiary flow way is in parallel the first main flow way. The first subsidiary outlet is positioned at the first upper end of the first frame body in flush with and in adjacency to the first main inlet.

Abstract: A fan frame body structure includes a first frame body. The first frame body has a first upper end, a first lower end, a first frame wall and a first main flow way. The first main flow way passes through the first frame body and is formed with a first main inlet and a first main outlet respectively at the first upper end and the first lower end. A first subsidiary flow way is disposed in the first frame wall. The first subsidiary flow way is in parallel the first main flow way. The first subsidiary outlet is positioned at the first upper end of the first frame body in flush with and in adjacency to the first main inlet.

Abstract: A fan frame body structure includes a first frame body. The first frame body has a first upper end, a first lower end, a first frame wall and a first main flow way. The first main flow way passes through the first frame body and is formed with a first main inlet and a first main outlet respectively at the first upper end and the first lower end. A first subsidiary flow way is disposed in the first frame wall. The first subsidiary flow way is in parallel the first main flow way. The first subsidiary outlet is positioned at the first upper end of the first frame body in flush with and in adjacency to the first main inlet.

Abstract: A blade wheel structure for axial fan includes a hub and a plurality of blades circumferentially outward extended from the hub. Each of the blades has a tip portion, which is located at a windward side of the blade and is curved in shape. With the curved tip portions of the blades, it is able to create largely increased air pressure and reduce the noise produced during fan operation.

Abstract: A fan frame structure includes a frame having a bottom surface, a top surface and a flow passage. The flow passage is located between the bottom surface and the top surface, and the bottom surface and the top surface are provided with an outlet opening and an inlet opening, respectively, which are communicable with the flow passage. The outlet opening has an outlet edge, on and along which a plurality of notches communicable with the flow passage is cut. By providing the notches on the outlet edge, it is able to largely reduce the noise and the vibration produced when a fan operates.

Abstract: A fan frame body structure includes a first frame body. The first frame body has a first upper end, a first lower end, a first frame wall and a first main flow way. The first main flow way passes through the first frame body and is formed with a first main inlet and a first main outlet respectively at the first upper end and the first lower end. A first subsidiary flow way is disposed in the first frame wall. The first subsidiary flow way is in parallel the first main flow way. The first subsidiary outlet is positioned at the first upper end of the first frame body in flush with and in adjacency to the first main inlet.

Abstract: A five-piece wide-angle lens module includes, from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has negative power, a convex surface on the object side and a concave surface on the image side. The second lens, the third lens and the fifth lens all have positive power and two convex surfaces on both sides. The fourth lens has negative power and two concave surfaces on both sides. The five-piece wide-angle lens module further satisfies the following relationship: 30?(T5+T7+T9)/(T6+T8+T10)?10. Thereby, the incident light can have smaller refraction angle when transmitting through the lenses, and thus the five-piece wide-angle lens module can be provided with characteristics of low manufacturing sensitivity, wide angle, low distortion, high photosensitivity efficiency and high image quality.

Abstract: This application provides a high power semiconductor device, which is characterized by forming two diodes connected in parallel and a schottky contact on a channel layer to lower the turn-on voltage and turn-on resistance of the high power semiconductor device at the same time and to enhance the breakdown voltage.

Abstract: A semiconductor power device includes a substrate, an active region having a recess and disposed on the substrate, a first conductivity type semiconductor layer disposed on the recess and devoid of overlapping with the recess, a gate electrode disposed on the active region wherein a portion of the gate electrode is disposed in the recess, a dielectric layer between the active region and the gate electrode, and a two dimension electron gas formed in the active region.

Abstract: A five-piece wide-angle lens module includes, from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has negative power, a convex surface on the object side and a concave surface on the image side. The second lens, the third lens and the fifth lens all have positive power and two convex surfaces on both sides. The fourth lens has negative power and two concave surfaces on both sides. The five-piece wide-angle lens module further satisfies the following relationship: 30?(T5+T7+T9)/(T6+T8+T10)?10. Thereby, the incident light can have smaller refraction angle when transmitting through the lenses, and thus the five-piece wide-angle lens module can be provided with characteristics of low manufacturing sensitivity, wide angle, low distortion, high photosensitivity efficiency and high image quality.

Abstract: This application provides a high power semiconductor device, which is characterized by forming two diodes connected in parallel and a schottky contact on a channel layer to lower the turn-on voltage and turn-on resistance of the high power semiconductor device at the same time and to enhance the breakdown voltage.

Abstract: A semiconductor power device includes a substrate, an active region having a recess and disposed on the substrate, a first conductivity type semiconductor layer disposed on the recess and devoid of overlapping with the recess, a gate electrode disposed on the active region wherein a portion of the gate electrode is disposed in the recess, a dielectric layer between the active region and the gate electrode, and a two dimension electron gas formed in the active region.

Abstract: A pet chew toy contains a body including a cowskin layer rolled and having an external fill space and an internal fill space; a filing member including a fluidic ground meat with a number of granule-shaped meat balls, characterized in that: the external fill space of the body includes the fluidic ground meat filled or applied therein.

Abstract: A method of making a pet chew toy contains steps of: A. processing raw materials, wherein various raw materials are mixed together and ground; B. pressing a mold, wherein the mold is used to press a ground mixer from the step of A, forming a semi-finished product; C. pasting ground meat, wherein at least one fluidic ground meat layer formed by applying the ground meat repeatedly is pasted on an upper and a bottom surfaces of the semi-finished product; D. dehydrating and drying the semi-finished product by heat, wherein the semi-finished product pasted the ground meat layer is heated by a drying machine to eliminate excessive moisture; E. cutting the semi-finished product wrapped by the meat slice to form a finished product, wherein after the semi-finished product pasted the ground meat layer is heated to eliminate excessive moisture, it is cut in a certain shape to form the finished product.

Abstract: A pet chew toy contains contain a plurality of bite resistant cowskins and a meat sauce material, all of which are mixed together, wherein the cowskins are ground into grains respectively, and the meat sauce material is selected from at least one of chicken, duck, goose, pork, beef, and mutton and then is ground into a meat sauce, then the meat sauce material and the grained cowskins are mixed together and press formed by an extruder machine to be further dried and cut into various shapes, thus finishing the pet chew toy.

Abstract: A toy-like pet food capable of cleaning oral comprises: a biting body made of cow leather; at least one meat sheet made of meat sauce; the at least one meat sheet is placed upon the biting body and the biting body is curled as a winding structure; two ends of the winding structure are tied as two knots, respectively; and the tied winding structure are dried so as to form as a hard structure for cleaning oral cavity of a pet; and wherein the meat sheet is formed with dried meat powders which is compressed as a sheet and is baked and dried from meat powders. The pet food can be provided to a pet. Since the biting body has hard, it provides the function of cleaning the oral cavity; the meat sheet embedded in the biting body will emit fragrant odor for a long period.

Abstract: A coherent optical communication receiver of a satellite optical communication system, having a telescope, an automatic frequency control circuit and a frequency shift keying demodulator. The automatic frequency control circuit has a local oscillating laser, a light polarization controller, a optical coupler, a photo-detector, a microwave matching network, a microwave mixer, a frequency discriminator and a low pass frequency filter. The coherent optical communication receiver can receive a frequency control signal of a distant laser signal to perform a heterodyne receiving between the emitter and the receiver distant away from each other. With the consideration of the decay of vibration and atmosphere, the quality of the satellite optical communication can still be maintained. The structure and fabrication of the receiver are simple with a low fabrication cost, and the receiver is suitable for being applied to high speed satellite communication system.