37results about How to "Strong light concentrating" patented technology

A tunable Fabry-Perot filter that is less sensitive to angle of incidence is formed by replacing the cavity (air gap) with a partitioned cavity that has an effective refractive index greater than one. The partitioned cavity includes a pair of partitioned cavity dielectric layers formed on the reflectors on either side of the variable air gap. Each of the dielectric layers has an optical thickness that is less than one fourth the shortest wavelength in the tuning range of the filter. The resulting three-layer partitioned cavity has an effective optical thickness substantially equal to an integral multiple (m) of one half the transmitted wavelength within the tuning range of the filter.

An optical diffusing film and a LCD backlight using the same are provided. The optical diffusing film comprises a transparent substrate made of an optically transparent material with a refractive index of 1.4 to 1.8, and a diffusing coating with a refractive index of 1.4 to 1.7 disposed on an upper surface of the transparent substrate, wherein diffusing particles with a refractive index of 1.4 to 1.7 are distributed in the diffusing coating, and the diffusing particles are in close contact with each other, the diffusing coating has a thickness of ½ to ⅔ of the largest particle size of the diffusing particles, and the coating density of the diffusing particles is 10³ to 10⁶ particles per square millimeter.

A liquid crystal display apparatus with a wide view angle, high luminance and high contrast comprises: a liquid crystal cell(1) employing a pair of transparent substrates(11,12) facing each other with a liquid crystal layer, first and second phase difference plates(14,15) and a first polarizing plate(17) formed sequentially on the outer surface side of the transparent substrate, a reflector(30) attached on the outer surface side of the transparent substrate, and a third phase difference plate(13) and a second polarizing plate(16) formed sequentially on the outer surface side of the transparent substrate. The reflector is configured by forming a metal reflection film(36) on a base material(35) with concave portions formed thereon while the metal reflection film includes a plurality of concave surfaces corresponding to the concave portions. The metal reflection film is attached to the liquid crystal cell in order to face the transparent substrate side, and the film thickness of the metal reflection film is within the range of 5 to 50nm. Adoption of the liquid crystal display apparatus(101), increases the viewing angle, and improves the luminance and the contrast.

The invention relates to a light low-light-level night vision lens which has a smaller F number compared with an existing low-light-level night vision lens, and the light gathering capacity is improved. The lens is characterized by comprising a front lens group A, a diaphragm B and a rear lens group C which are sequentially arranged along the incident direction of an optical axis. The front lens group A comprises a positive meniscus lens A1, a biconcave lens A2, a negative meniscus lens A3 and a positive meniscus lens A4, wherein the biconcave lens A2 and the negative meniscus lens A3 are tightly connected to form a first doublet lens; and the rear lens group C comprises a biconvex lens C1, a biconvex lens C2, a biconcave lens C3 and a negative meniscus lens C4, wherein the biconvex lens C1 and the biconcave lens C2 are tightly connected to form a second doublet lens. The lens is reasonable in design, the F number of the lens is 1.1, and the lens has high light gathering capacity; thenumber of optical lenses is reduced, the total length of the lens is shortened, and the light weight of the lens is realized; the lens is suitable for low-illumination environments such as night and the like, and has good detection capability.

The invention discloses a core layer of a perovskite nanowire with a tiled shell-core structure and a solar cell manufacturing method of the core layer. Sunlight can directly enter from the front surface of a cell without entering from the side surface, so the efficiency of a device is improved, and the core layer is very suitable for the fields of intelligent wearing and the like. The core layermanufacturing method comprises the following steps: a, preparing a substrate and a template; b, etching a tiled groove array on the template by adopting an electron beam exposure method; c, enabling the groove of the template to face downwards, bonding and fixing the template and the substrate together, forming an accommodating space of the core layer between the groove and the substrate, and soaking the core layer in the core layer sol until the accommodating space is filled with the core layer sol; d, drying and annealing to form a tiled array type core layer. The manufacturing method of thecell comprises the following steps: S1, arranging a first electrode at one end of a substrate; S2, preparing a core layer on the substrate; S3, preparing a shell layer on the core layer; S4, arranging a second electrode at the other end of the substrate.

The invention discloses a light-gathering LED (Light-Emitting Diode) illuminating lamp, which comprises a PCB (Printed Circuit Board) and an LED lamp fixedly connected to the middle part of the right end of the PCB, wherein the left end of the PCB is provided with a radiator; the middle part of the radiator is fixedly connected with the PCB; the right side of the LED lamp is provided with a reflective light-gathering cover; the left end of the reflective light-gathering cover is covered on the LED lamp, and is fixedly connected with the LED lamp; a shell is sleeved outside the reflective light-gathering cover; the left end of the shell is fixedly connected with the right end of the radiator; the center of the right end of the shell is provided with a light beam transmission interface; and the light beam transmission interface is fixedly connected with the right end of the reflective light-gathering cover. The light-gathering LED illuminating lamp has a simple structure, a reasonable design and high light-gathering capacity, and the problems of unremarkable light-gathering effect, insufficient illumination strength and non-concentrated light beams existing in the prior art can be solved effectively; and meanwhile, light beams have the characteristics of uniform brightness, high permeation capacity, small light ray loss, and the like.

The invention discloses an independent high beam LED automobile lens. The problems that an existing high beam automobile head lamp is short in service life, large in size, low in brightness and short in illumination distance are mainly solved. The independent high beam LED automobile lens comprises a heat radiation supporting frame (1), light beads (2), a reflection cup (3), a lens supporting frame (4) and a lens (5), and is characterized in that the light beads (2) are arranged in the reflection cup (3) and installed on the heat radiation supporting frame (1) together with the reflection cup (3); a certain included angle is formed between the illumination surface of the light beads (2) and the horizontal plane in the direction opposite to the light emergent direction; the lens supporting frame (4) is installed at the front end of the heat radiation supporting frame (1), and the lens (5) is installed at the front end of the lens supporting frame (4). Through the method that the light beads are installed obliquely, the light utilization rate of the lens is greatly improved, and the independent high beam LED automobile lens is small in size, high in brightness and long in illumination distance.

The invention discloses a preparation method of a photodegradation polyethylene film. The preparation method comprises the following steps that a hydrophobic film is prepared, a hydrophilic film is prepared, a polyethylene film is prepared, and the hydrophilic film, the hydrophobic film and the polyethylene film are composited, wherein in the polyethylene film preparing step, surface modified nano-TiO2 powder is added. The preparation method of the photodegradation polyethylene film has the effects that through a polyethylene material manufactured by the preparation method, the hydrophobicityof the material surface can be significantly improved, the service life of the plastic film is prolonged, the antimicrobial ability of the surface is enhanced, after the hydrophobic film falls off, the hydrophilic film can effectively absorb water beads, strong light condensation force is formed, and the photodegradation progress is accelerated.

The invention discloses a front steering lamp for an automobile.The front steering lamp comprises a light distribution mirror (1) and a rear shell (3) which are connected in a sealing mode, the rear shell (3) is fixedly provided with a light converging cover (2), and the light converging cover (2) is provided with a stepped shell (4).The front steering lamp is characterized in that the light converging cover (2) is provided with multiple paraboloids (5), each paraboloid (5) is provided with a light emitting hole (6), the portion, corresponding to each light emitting hole (6), of the stepped shell (4) is provided with an LED light source (7), and the LED light sources (7) are fixed to an aluminum substrate (8) and then fixed to the stepped shell (4).According to the front steering lamp for the automobile, the structural design is unique, high light converging is achieved through the paraboloids, therefore, the brightness of the front steering lamp is improved, and the using performance of the front steering lamp is also improved; the LED heat dissipation problem is fundamentally solved, and the service life of the lamp is prolonged.

The invention particularly relates to an anti-scald water cup. A shell wraps the outside of an outer cup wall, a cold light sheet is arranged in the middle of the shell, a thermistor is arranged on the top surface of the bottom of the cup, a heat insulation base is arranged under the bottom of the cup, an installation cavity is formed in the heat insulation base, a storage battery, an inverter anda controller are fixed in an installation bin, the storage battery is sequentially connected to the cold light sheet through the inverter and the controller, and the thermistor is connected with thecold light sheet in parallel. According to the anti-scald water cup, the function of temperature sensing indication is added on the basis of a common heat insulation water cup, specifically, the thermistor is used as a temperature sensing element, when the water temperature rises, a resistance value is decreased, when the temperature is higher than 50 DEG C, the resistance value is reduced to a threshold value, and the cold light sheet is turned on; a user can clearly judge that the water temperature is too high and water is not suitable for drinking by seeing that the cup body gives light, and can be prevented from being scalded by hot drinks.