175results about How to "Increase reflective area" patented technology

A backlight apparatus includes a guiding element and a light source disposed at one side of the guiding element. There is a plurality of reflective patterns at the bottom surface of the guiding element. Each reflective pattern is composed of at least one concavity and at least one convexity. The concavity is disposed at the rim around the convexity. As the light source emits light to the guiding element, the reflective area is increased by the concavity of the reflective pattern for increasing the reflecting effect and for distributing the brightness more uniformly, and thereby higher brightness and uniformity can be achieved.

The present invention relates to a display apparatus comprising front display unit (10) and rear display unit (50), wherein the front display unit (10) and the rear display unit (50) are arranged such that an image on the rear display unit (50) is visible through a portion of the front display unit (10). The front display unit (10) comprise: a display panel (20); a front backlight (30) which is arranged behind the display panel (20), and which includes a first light guide plate (36) having a projection window (16) through which an image on the rear display unit (50) is visible, first light sources (38) arranged along the circumference of the first light guide plate (36), and a reflection sheet (39) arranged at the rear surface of the first light guide plate (36) to reflect light and having an image hole (18) formed at the region thereof that corresponds to the projection window (16); a rear backlight (40) arranged behind the front backlight (30) and including a second light guide plate (42) corresponding to the projection window (16) and second light sources (44) arranged along the circumference of the second light guide plate (42); and a rear optical shutter (48) arranged behind the second light guide plate (24). The rear optical shutter (48) is made of a transparent material, such that the rear display unit and the front display unit cooperate with one another to display a combined image. The entire screen of the front display unit is capable of displaying an image, without any disconnection of the image, when the rear optical shutter is closed.

A light emitting diode having improved light efficiency and enhanced reflectivity of a device by forming an insulating reflective part on a reflective electrode formed on the upper surface of a mesa. A mesa exposing part is formed on the outer periphery and/or in the interior region of the reflective electrode to expose a predetermined area of the upper surface of the mesa such that reflection at the mesa exposing part is performed by the insulating reflective part.

The invention provides a method for producing advanced triple-wire double-calcination pure cotton fabrics, comprising the working procedures of yarn dyeing, weaving, fabrics singeing, desizing, alkali mercerization, tenter setting and preshrinking. The method is characterized in that before being dyed, grey yarns are mercerized and singed, and a liquid ammonia working procedure is added between alkali mercerization and tenter setting, thereby forming the whole processing steps sequentially including yarn mercerization, yarn singeing, yarn dyeing, weaving, fabrics singeing, desizing, alkali mercerization, liquid ammonia, tentering and preshrinking. Compared with the traditional mercerized pure cotton fabrics, the triple-mercerization pure cotton fabrics obtained by the method have the advantages of higher lustre and high tinctorial yieldof yarns, fresher color of fabrics, good moisture absorption and ventilation, soft handle and high resilience, and the triple-wire double-calcination pure cotton fabrics are softer after being washed and maintain other excellent performances thereof.

The present invention relates to an illuminator (10) comprising a substrate (12), a structured conductive layer (16) applied to one surface of the substrate, and at least one light source (18, 26) connected to the structured conductive layer. The illuminator is characterized in that it further comprises an unstructured reflective layer (24) applied on top of said structured conductive layer, which unstructured reflective layer has an essentially continuous extension at least in a surrounding of the at least one light source. Due to the unstructured reflective layer, the optical efficiency of the illuminator can be improved. The invention also relates to a method for producing such illuminator.

The invention provides a bird repelling device, and belongs to the technical field of bird repelling devices for electricity power. The device comprises a bottom plate, a self-rotating device, a reflecting body, a control system and a bird repelling mechanism; the self-rotating device comprises a rotary shaft, a shaft sleeve and multiple wind bowls; the reflecting body is of an umbrella-shaped structure enclosed by multiple arc blades; the reflecting body is connected with the rotary shaft; the control system comprises a photovoltaic assembly, a controller, a storage battery and an infrared sensor; the output end of the photovoltaic assembly is connected with the storage battery through a charge discharge module; the output end of the charge discharge module is connected with the input endof the controller, and the output end of the infrared sensor is connected with the input end of controller; the bird repelling device comprises an acousto-optic alarming device, a sound generating plate and a smell dispersing assembly. According to the bird repelling device, three manners of optical reflection, noise and flash light can be utilized by the device to repel birds, the nest buildingand activities in the periphery of a power transmission pole of the birds can be effectively avoided to reduce problems of short circuit, grounding fault and the like caused by the activities of the birds are reduced, and the safety running of power transmission wires is ensured.

The invention provides a police helmet with intelligent temperature sensing and adjusting functions, belongs to the technical field of helmets, and aims to solve the problem of low on-duty efficiency caused by inconvenience in use of existing police helmets. The police helmet comprises a helmet shell and a fastening strip structure which is mounted on the helmet shell and used for being fastened on the neck. The police helmet is characterized in that an intelligent luminance sensing and adjusting device is mounted on the helmet shell and comprises an intelligent processor, a photosensitive sensor and a lamp set with lighting lamps; the photosensitive sensor and the lamp set are connected with the intelligent processor and mounted at the front end of the helmet shell; the photosensitive sensor can detect light ray intensity at the front end of the helmet body in real time and transmit converted voltage signals to the intelligent processor; the intelligent processor controls on or off of the lighting lamps according to the received voltage signals. The police helmet has the advantage of improving on-duty efficiency.

The invention relates to a high power LED (light-emitting diode) daylight lamp and a heat rejection method. The daylight lamp comprises a light source and a lamp shell, wherein the light source is produced in a way that a plurality of LED chips are directly arranged on the frontage of a circuit baseplate in a crystal fixing manner, and a copper foil is covered on the whole back of the circuit baseplate; the frontal copper foil is divided into a plurality of crystal fixing regions and current channels, the current channels are connected with the LED chips of the crystal fixing regions by gold threads, and the crystal fixing regions are provided with heat conduction holes; and the lamp shell is of a rod shape, the section of the lamp shell is composed of a semicircular aluminum pipe, a transparent cover and two end covers, the light source is arranged outside the aluminum pipe, and the back copper foil of the circuit baseplate is closely contacted with the bottom wall of the aluminum pipe. The production of the high power LED daylight lamp is simple, the light effect is high, a thermal resistor interface is less, and the heat rejection effect is good.

A reflection-type display device 200 includes: an active switch layer 201s including a plurality of switching elements 201t; a plurality of pixel electrodes 207 each connected to a corresponding one of the plurality of switching elements 201t; a reflective layer 205 formed between the active switch layer 201s and the plurality of pixel electrodes 207; and a modulation layer 213 provided at a side of the pixel electrodes 207 facing a viewer, the modulation layer 213 being capable of switching between a first state and a second state of respectively different optical characteristics. The reflective layer 205 is connected to neither the plurality of switching elements 201t nor the plurality of pixel electrodes 207.

The invention relates to the field of lamps and discloses a heat-dissipation type LED (Light Emitting Diode) lamp. The heat-dissipation type LED lamp comprises a lamp body, a lamp cap, a lamp holder and a lamp shade, wherein the lamp body is connected to the lamp cap; the lamp cap is in threaded connection with the lamp holder; the lamp shade covers the lamp body; foldable memory metal is connected between the lamp holder and the lamp shade; a plurality of holes are formed in the foldable memory metal; a first elastic sleeve is connected onto the lamp holder in a sliding manner; a second elastic sleeve sleeves the first elastic sleeve in the sliding manner; the second elastic sleeve is connected to the lamp shade; an expansion block is arranged between the second elastic sleeve and the lamp shade; a spring is connected between the first elastic sleeve and the memory metal; a first through hole is formed in the first elastic sleeve; a second through hole is formed in the second elastic sleeve; the first through hole and the second through hole are formed in a staggered manner; the first elastic sleeve is positioned on the outer side of the memory metal; the lamp shade is a transparent heating expansion body. Compared with the prior art, the heat-dissipation type LED lamp has the advantages of better heat dissipation effect, better illumination brightness, low production cost and long service life; the heat-dissipation type LED lamp can be popularized and used.

The present invention relates to a backlight plate device. It includes a frame body with recessed groove, a lamp source group, a diffusion plate and at least an elastic element, in which inner wall surface of the recessed groove is equipped with reflecting layer, and the lamp source group is formed from several cold-cathode fluorescence lamps which are arranged in the recessed groove, one end of the elastic element is fixed in the bottom surface of the recessed groove, and its another end is placed against the diffusion plate. It utilizes the elastic element to absorb partial diffusion plate deformation energy to reduce its deformation, said elastic element also has buffer effect so as to make the diffusion plate have optimum planeness, so that it can provide hight luminance and luminance uniformly-distributed light source for liquid crystal panel.

The invention relates to a photoacoustic and ultrasonic bimodal endoscopic imaging device and method based on light reflection, wherein the device comprises a probe housing provided with a transmitting and receiving surface; at least one group of a light transmitting module and a light reflecting module disposed outside the probe housing, with the light transmitting module being arranged on the transmitting and receiving surface, the light reflecting module reflecting the light beam to the light transmitting module, and the light transmitting module shaping the light beam and sending the lightbeam to the outside; and an ultrasonic phased array transmitting and receiving module located in the probe housing and one side is arranged on the transmitting and receiving surface for transmittingultrasonic signals and receiving ultrasonic signals and photoacoustic signals. Compared with the prior art, the device and method achieve simultaneous detection of photoacoustic and ultrasonic signalsby combining a laser module and a multi-channel ultrasonic probe, and simultaneously obtains ultrasonic and photoacoustic information of the same scanning plane by adopting the same probe device fordetection.

A manufacture method of a light guide plate comprises the following steps of providing a substrate; forming first order dots, wherein the first order dots are formed by utilizing different positions of a laser on the substrate; forming at least one second order dot so as to form a mold insert, wherein the second order dots are formed in the first order dots by utilizing the laser, and the radius of each second order dot is smaller than that of each first order dot; and utilizing the mold insert to form the light guide plate, wherein the power of the laser forming the second order dots is 55%-85% of the power of the laser forming the first order dots. The dots can be manufactured to be two-order or multiple-order dots, depend on a processing power range of the laser, and the range is larger, the more formed dot orders are. The light guide plate manufactured by means of the manufacture method has high outgoing light brightness and good outgoing light uniformity.

The invention discloses a composite salivate method light reflection sheet. The sheet is characterized in that the sheet is manufactured by sequentially extruding and shaping three layers such as an anti-ultraviolet antistatic mixed upper layer, a bulb-in-bulb layer and an anti-ultraviolet antistatic mixed lower layer; the bulb-in-bulb layer is formed by mixing 30 weight parts of components A, and 60-80 weight parts of components B; the anti-ultraviolet antistatic mixed upper layer and the anti-ultraviolet antistatic mixed lower layer are both formed by components C; the components A are formed by mixing 3-48 weight parts of inorganic particles and 5-50 weight parts of resin A; the components B are formed by mixing 50-70 weight parts of resin B and 1-20 weight parts of compatilizers; the components C are formed by mixing 1-5 weight parts of components D and 95-99 weight parts resin B; and the components D are formed by mixing organic ultraviolet absorbents and antistatic agents. The sheet can be processed into light reflection board components in devices for LED (light emitting diode) illumination, common daylight illumination, and advertisement display board light boxes by means of cutting, folding, plastic adsorption or punching forming.

The invention provides a packaging method for a light source used in an LED fluorescent lamp. The light source uses a two-sided copper-clad plate as a substrate, and copper foil on a front side of the substrate is divided into a plurality of solid crystal areas and current channels. Gold wire welding zones are disposed closed to the solid crystal areas on the current channels. The solid crystal areas are provided with thermal vias throughout the substrate to conduct heat of the solid crystal areas to the copper foil on a back side of the substrate. The packaging method comprises: first, coating solid crystal glue on the solid crystal areas, placing LED chips on the solid crystal glue of the solid crystal areas and pressing the LED chips; then, welding gold wires; and at last, packaging hemispheric fluorescent sillca gel on the LED chips and the gold wires. The invention also discloses a light source used in a high power LED fluorescent lamp manufactured by the above packaging method. The light source manufactured by the above packaging method is characterized by little thermal resistance interface, high heat dissipation efficiency, etc.

The invention discloses a monolayer two-way stretch light reflection polypropylene film, which is characterized by being manufactured by mixing, extruding, two-way stretching and forming of 30 parts of first component, 60-80 parts of second component and 1-5 parts of third component by mass, wherein the first component comprises 3-48 parts of inorganic particle and 5-50 parts of A resin by mass which are mixed; the second component comprises 50-70 parts of polypropylene resin and 1-20 parts of compatilizer by mass which are mixed; and the third component comprises 0.05-1 part of organic ultraviolet absorbent and 0.5-5 parts of antistat by mass which are mixed. The monolayer two-way stretch light reflection polypropylene film is manufactured by the steps of extruding by an extruder at first, longitudinally stretching, horizontally stretching, thermoforming and forming in a drying tunnel, and can be used for manufacturing light reflection film members with flexibility requirements.

The invention provides a high-power LED chip and a manufacturing method thereof. The high-power LED chip comprises an epitaxial layer, an ITO layer, a first reflection layer, a barrier layer, a passivation layer, a second reflection layer, a bonding layer, a Si substrate layer, a protection layer, a P electrode and an N electrode. Round holes are formed in the epitaxial layer, the inner side wallsof the round holes are covered with a contact layer, and the surface of the contact layer and the surface of the passivation layer are evaporated with the second reflection layer, so that the reflection area of light in the high-power LED chip is increased, and the lighting effect and the photoelectric reliability of the chip are improved. According to the manufacturing method provided by the invention, through the method of forming the uniform groove array on the edge of the barrier layer and then plating the passivation layer and the second reflection layer in sequence, light absorption ofthe metal of the barrier layer can be reduced; the reflection effect is improved through the second reflection layer; and meanwhile, the uniform groove array is arranged to facilitate uniform conduction of current and improve the luminous efficiency on the premise of ensuring the stability of a device.

The invention provides a light emitting diode having a full mirror surface structure and a manufacturing method therefor. A DBR layer which is epitaxially grown in advance is used, the DBR layer corresponding to an Ohmic contact layer is reserved via chip technologies, an Ohmic contact electrode zone is enabled to have Ohmic contact effects and reflecting layer effects, the Ohmic contact electrode zone and an ODR mirror surface system can jointly form a full mirror surface structure, and no reflecting mirror surface area loss can be caused. Specifically, the light emitting diode having the full mirror surface structure comprises a light emitting epitaxial layer and a mirror surface system positioned below the light emitting epitaxial layer, the mirror surface system comprises a metal reflecting layer and a light transmitting layer positioned above the metal reflecting layer, the light transmitting layer comprises a light transmitting zone and a Ohmic contact zone, the light transmitting zone is made of light transmitting dielectric material, the light transmitting layer and the metal reflecting layer form an ODR reflecting mirror, the Ohmic contact zone orderly comprises the Ohmic contact layer and the DBR layer in a from bottom to top manner, the DBR layer is formed by at least alternately stacking first semiconductor layers and second semiconductor layers, and therefore an uninterrupted reflecting mirror surface system can be formed.

The invention discloses a reflective display screen and a preparation method thereof and a display device. In order to solve the technical problems that in the prior art, a reflective display device is low in reflectivity, the reflective display screen comprises an array substrate, an opposite substrate and a liquid crystal layer, wherein the array substrate is opposite to the opposite substrate,and the liquid crystal layer is located between the array substrate and the opposite substrate; a display surface is arranged on one side of the array substrate; a transparent pixel electrode layer isarranged on the side, facing the liquid crystal layer, of the array substrate; a reflective common electrode layer is arranged on the side, facing the liquid crystal layer, of the opposite substrate.

The invention discloses a preparation method of antibacterial mildew-proof filter cotton. The preparation method comprises the following steps: (1) preparation of azido-modified nanometer titanium dioxide; (2) preparation of modified PET master batches: uniformly mixing PET slices with the azido-modified nanometer titanium dioxide, and conducting extruding and granulating to obtain the modified PET master batches; (3) melt-blowing: uniformly mixing the modified PET master batches and electret master batches, carrying out extruding and melting, feeding a formed melt to a spinning assembly for spinning, and forming fine fibers under the traction action of hot air; (4) ultraviolet irradiation: performing ultraviolet irradiation on the obtained fine fibers to obtain porous fibers; and (5) forming: carrying out web forming, electret formation and rolling on the porous fibers to obtain the antibacterial mildew-proof filter cotton. The azido-modified nanometer titanium dioxide is added into PET fibers, so the antibacterial property, the filtering property and the mechanical property of the filter cotton can be effectively improved.