124results about How to "Improve light gathering efficiency" patented technology

The invention discloses a solar energy sea water desalinization device based on reflection and total reflection, and belongs to the technical field of solar energy heat collection and water treatment. The device is composed of an upper surface transparent film, a total reflection solid film with a gradually-varied wall thickness and hydrophilic capillary tubes; the plurality of devices can be arranged and combined to form multiple solar energy sea water desalinization films; the combined devices are floated on the sea surface for use. According to the invention, a capillary phenomenon is utilized to enable sea water to go up to the upper ends of the capillary tubes, sunlight enters through the upper surface layer transparent film, and is subjected to reflection or total reflection when being in contact with an inner surface, and finally the sunlight is gathered on the black hydrophilic fiber capillary tubes to generate heat energy to realize sea water evaporation. The convection and heat exchange of the raised water vapor and external air is realized through the upper surface layer transparent film, the water vapor is condensed to generate fresh water on the inner side of the transparent film, the fresh water slips through the inner wall of a reflecting surface, and flows into the lower part of a housing through water outlet holes in the wall of a supporting cylinder to be stored. The fresh water is conveyed to users after accumulation, and meanwhile, small-sized plant can be planted at sea.

The invention provides a solid-state imaging device, comprising: a photodiode (1) that converts incident light into charges, a first dielectric film (82) formed on the upper part of the photodiode (1), and The second dielectric film (83) and the third dielectric film (21) formed on the top of ), the hollow layer (9) provided between any of the first to third dielectric films.

A light emitting device comprises a light emitting element having a first electrode and a second electrode, and a semiconductor member having a cavity in a principal surface thereof, inside which the light emitting element is mounted, and electrically connected to the light emitting element, wherein the semiconductor member is constructed as a voltage regulating diode for stabilizing a voltage supplied from the exterior. As a result, the light emitting element can be protected from a static electricity or a surge voltage flowed therein from the exterior, the entire size of the system can be remarkably reduced so as to simplify a structure thereof, and heat generated from the system can be effectively discharged to the exterior. In addition, by providing a reflection portion in the cavity, light emitted from the light emitting element can be efficiently condensed.

The invention relates to a prism sheet and a backlight device with the same. The backlight device at least comprises a luminous element, a light guide plate and the prism sheet. The light guide plateis provided with an incidence surface and the light emitted by the luminous element illuminates onto the incidence surface. The prism sheet is arranged above the light guide plate and comprises a light condensation film and a plurality of prism peaks which are formed on the upper surface of the light condensation film. The prism peaks are distributed on the light condensation film in a form of anarray. Each prism peak is in a pyramid shape or a prismatic table shape and is provided with at least six arrises. The bottoms of the adjacent prism peaks are combined with each other. By adopting thestructure, the backlight device can condense light in a plurality of directions under the condition of using only one prism sheet, thereby facilitating reducing the thickness of the backlight device.

The invention relates to a heliostat surface-shape detection device and a method.The detection device comprises a to-be-detected heliostat, an image collecting unit, a data line, an industrial personal computer and a heat absorption tower.The method includes the steps that the to-be-detected heliostat reflects reflected optical images of the heat absorption tower to the image collecting unit, the image collecting unit transmits the collected images to the industrial personal computer through the data line to be processed, surface-shape information of the to-be-detected heliostat is calculated based on collected imaging image sequences of the heat absorption tower in the to-be-detected heliostat, the theoretical design value of the surface shape of the to-be-detected heliostat is combined, the actual error value of the surface shape of the to-be-detected heliostat is obtained, and the surface shape of the to-be-detected heliostat is adjusted.The heliostat surface-shape detection device and the method are simple in arrangement and easy to operate, and belong to non-contact nondestructive measurement, the light-gathering efficiency of the heliostat field and the efficiency of a heat absorber can be effectively improved, and safe operation of the tower is guaranteed; a heliostat after being installed can be detected, a heliostat in the operating process can also be detected, and the application range is wide.

The invention discloses a device and a method for testing light concentration efficiency of a high-parallelism and large-aperture light concentration system and belongs to the field of testing of light concentration photovoltaic systems. The testing device comprises a light source (1), an optical filter (2), a reflector (3), a collimator tube (4), a diaphragm (6), and a detector (8); the light source (1) and the optical filter (2) are positioned in the reflector (3); the light source (1), the optical filter (2), the collimator tube (4), the diaphragm (6), and the detector (8) are arranged coaxially and sequentially; and light emit by the light source (1) passes through the optical filter (2) to be changed into quasi monochromatic light, a divergence angle (5) of the quasi monochromatic light is matched with the divergence angle (5) of sunlight by adjusting the collimator tube (4), and light passing through the diaphragm (6) is converged by a light concentration system (7) and then is received by the detector (8). The device can realize the performance test of the high-parallelism light concentration system with the large aperture of 145mm and has a simple structure and low cost.

An image sensor and fabricating method thereof may include a semiconductor substrate, a plurality of photodiodes formed on and/or over the semiconductor substrate, a first insulating layer formed on and/or over the semiconductor substrate including the plurality of photodiodes, at least one metal line formed on and/or over the first insulating layer, a second insulating layer having a plurality of wells formed on and/or over the plurality of photodiodes, a plurality of color filters formed by embedding color filter layers in a plurality of the wells, and a plurality of microlenses formed on and/or over the color filters.

Disclosed are an organic-inorganic hybrid composition including a fluorene-based monomer, an inorganic particle, an initiator, and a solvent, and an image sensor made using the same. The organic-inorganic hybrid composition can have a high refractive index and excellent transmittance to minimize light loss, and the image sensor produced using the same may transport a greater amount of light to a photodiode. Accordingly, it is possible to accomplish a high resolution image sensor having improved sensitivity.

The invention relates to a focusing system having a grating structure. The system comprises a two-dimensional grating on a thin film; a shape of the thin film is a polygon having over three boundaries; at least one boundary of the thin film is connected with a backlight device and other boundaries have reflective films. According to the invention, a thickness of a film concentrator is further reduced; and solar energy is effectively utilized and is converted into a power source for indoor illumination, backlight of an LCD panel or a solar cell. Besides, with regard to illumination of solar energy, a requirement on chip size is low and a cost is saved.

The invention discloses a light focusing cavity of a laser, which comprises a light focusing cavity body, a YAG bar and two lamps, wherein the YAG bar is arranged in the center of the light focusing cavity body, the two lamps are arranged on the two sides of the YAG bar and are symmetrically distributed, and the axis of the light focusing cavity body, the axis of the YAG bar and the axes of the two lamps are in parallel with each other. The invention is characterized in that the shape of the light focusing cavity body is formed by two intersecting cylindrical surfaces, the two intersecting cylindrical surfaces are symmetrically arranged, the radiuses of the cross sections of the two intersecting cylindrical surfaces are equal and the radius is 15-35mm. The invention overcomes the defects that the upper side and the lower side of the YAG bar of double elliptic cylindrical surfaces leak light and the efficiency of the light focusing cavity with common intersecting cylindrical surfaces is not high, and has the advantages that the light focusing cavity has elliptic light focusing features even though the shape of the light focusing cavity is non-elliptic and the light focusing efficiency is higher.

The invention discloses a preparation method of a linear Fresnel lens and a Fresnel lens prepared by the preparation method. The preparation method comprises the following steps of melting glass raw materials, rolling, cooling and annealing in sequence. The linear Fresnel lens prepared by the preparation method comprises an incident surface, an emergent surface and insection on the emergent surface. The preparation method of the linear Fresnel lens is simple, easy to operate, suitable for continuous production and applicable to any glass material which can be used for preparing the linear Fresnel lens; the production efficiency is improved greatly, and the production cost is reduced greatly at the same time; and moreover the prepared linear Fresnel lens is made integrally, so that the defects that a linear Fresnel lens in the prior art is poor in weather resistance, high in cost and the like are overcome; and a lens prepared by the preparation method has a good light focusing efficiency.

The invention discloses an array type focusing photovoltaic power generating device which comprises a housing for assembling a plurality of focusing module group mechanisms and a support, wherein each focusing module group mechanism comprises a focusing photovoltaic module group for converting solar energy into electric energy. A focusing photovoltaic module group supporting member is installed on the lower end of the focusing photovoltaic module group, the entire focusing photovoltaic module group supporting member sleeves a Y rotating shaft, and a swivel pin is installed on the sleeving part. Each of the two lower side of each focusing photovoltaic module group supporting member is provided with a swivel pin, and a connecting rod is installed on each swivel pin. A cylindrical tooth bar sliding on the Y rotating shaft is installed on a position certain distance away from the installation position of each focusing photovoltaic module group supporting member, and the end face of one end of the cylindrical tooth bar away from the focusing photovoltaic module group supporting member extends downwards, and swivel pins are installed on the two extending ends. Each focusing photovoltaic module group comprises a cell chip, and a prism for focusing light on the cell chip is installed above the cell chip. A Fresnel Lens for focusing light on the prism is arranged above the prism.

The invention relates to a multi-beam laser condensation transmission device. A conical tip of a reflection pyramid is arranged at the central position of a supporting column, the other end of the supporting column is arranged at the central position of a light incidence end face of a laser transmission condensation bar, and the central line of the reflection pyramid coincides with the central line of the laser transmission condensation bar. With regard to laser beams entering the lateral surface of the reflection pyramid, a plurality of laser beams entering the input end face of the laser transmission condensation bar perpendicularly are reflected by the reflection pyramid, enter a condensation section through a laser transmission section, is transmitted along the central line of the condensation section straightly, and enters a light shaping section through the condensation section; other light enters a hyperboloid of the lateral surface of the condensation section to form total reflection, is transmitted to the output end of the condensation section in a broken line mode formed by multiple total reflection, is gathered to the output end of the condensation section with small divergence angles, and then enters the light shaping section; therefore, light energy concentration of the multiple laser beams during transmission is achieved. The multi-beam laser condensation transmission device has the advantage of being simple in structure, small in size, low in cost, high in condensation efficiency and the like.

A funnel-shaped optical energy current density multiplier is in the shape of a funnel which is in rotational symmetry about the center line. A reflection film is arranged on the inner surface of the side wall of the multiplier. The inner surface of the side wall is in the shape of a revolution surface which is formed in the mode that a curve rotates around the center line. The geometric shape of the inner surface of the side wall is a hyperbolical rotating surface. Among light rays which enter a plane where a light incidence port is located in a vertical incidence mode, the light rays within the range of a light emergence port with the center line as the center axis go straightly along the center line and are emitted through the light emergence port, other light rays which enter the hyperboloid of the side wall in an incidence mode are reflected, the reflected light serves as incident light of a next reflection point to enter the hyperboloid, closer to the light emergence port, of the side wall in an incidence mode, the light rays are transmitted to the light emergence port in the form of broken lines to be emitted, and therefore the light rays are gathered. The funnel-shaped optical energy current density multiplier has the advantages of being simple in structure, easy to form, small in size, low in cost, convenient to use, high in light-gathering efficiency and the like, and therefore the funnel-shaped optical energy current density multiplier can be used for gathering light of solar energy and other light sources.

The invention discloses a cleaner for a disc condenser reflecting surface. The cleaner comprises a low-pressure air delivery pipe (1) and high-pressure water pipes (3), the low-pressure air delivery pipe (1) is arranged on the disc condenser reflecting surface, is driven by a pneumatic motor (13) and is capable of rotating around the central axis of the disc condenser reflecting surface (27), the high-pressure water pipes (3) are juxtaposed with the low-pressure air delivery pipe (1), a plurality of air circulation nozzles are connected at the lower end of the low-pressure air delivery pipe (1), and a plurality of high-pressure water nozzles (26) are arranged at the lower end of each high-pressure water pipe (3) through a nozzle mounting rod (2). When the cleaner is used for cleaning, the low-pressure air delivery pipe (1) and the high-pressure water pipes (3) are connected with a mobile cleaning station (23) through a fluid connecting pipe, a signal control line and a solar power system; and when the cleaner is not used for cleaning, the low-pressure air delivery pipe (1) and the high-pressure water pipes (3) are disconnected with the mobile cleaning station (23). The cleaner is capable of automatically cleaning the disc condenser reflecting surface.

The invention relates to a cogeneration device for light condensation of a single-reflection compound parabolic condenser and an application method. The cogeneration device comprises a concentrating photovoltaic photothermal unit array, a tracking unit, an electricity recovery unit, a heat recovery unit and a control and monitor unit, direct sunlight parallel to the axis of the single-reflection compound parabolic condenser is reflected in one time by the single-reflection compound parabolic condenser, then sequentially passes through an ultra-white glass cover plate and an upper layer ethylene vinyl acetate (EVA) from top to bottom, and is converged to a crystalline silicon photovoltaic cell, the crystalline silicon photovoltaic cell generates electric energy and heat energy, the electric energy passes through a cable, is modulated by a photovoltaic inverter and then is incorporated into a power grid or used or stored in an off-grid way, and the heat energy is absorbed by a fluid passing through a cooling square pipe and then is introduced out for storage or application. The single-reflection compound parabolic condenser adopted by the invention is shorter than the traditional compound parabolic condenser and the traditional short and abrupt compound parabolic condenser, cost is low, high-quality electric energy can be generated, meanwhile, the heat energy can be provided, and high performance cost ratio is achieved.

A photoelectric conversion device comprises: a plurality of first conduction type crystalline semiconductor grains (2), on each surface layer of which a second conduction type semiconductor portion (4) is formed and which are bonded, at a certain interval, to the surface of a conductive substrate (1); an insulating layer (3) formed between the crystalline semiconductor gains (2) on the conductive substrate (1); a transparent conductive layer (5) formed above the insulating layer (3) and the crystalline semiconductor grains (2); and a collector electrode (7) formed on the surface of the transparent conductive layer (5). The collector electrode (7) consists of a conductive plate having a plurality of through holes (40) that allow external light to illuminate each of the crystalline semiconductor grains (2). Since a transparent light collecting layer (8) is provided on the transparent conductive layer (5) and the collector electrode (7). It is possible to eliminate shadow loss while suppressing resistance loss with a simple process and provide a photoelectric conversion device having a high efficiency.

The invention discloses a multi-chip parallel series UVLED array support. The support is in the form of a laminated structure comprising a heat radiation layer, a first insulating layer, a circuit layer, a second insulating layer, and a single-sided mirror emitting layer which are stacked in sequence. The single-sided mirror emitting layer is provided with uniformly distributed reflector cups, and chip pads are provided in the intervals of the reflector cups. The LED light source packaged by the support is featured by reasonable and compact design, high temperature, oxidation resistance, corrosion resistance, high reflectivity, good insulation properties, high thermal conductivity, high condensing efficiency, and good heat dissipation.