79results about How to "Improve light efficiency utilization" patented technology

The invention discloses a twin light integrated LED automobile headlamp and belongs to the technical field of automobile lamps. The twin light integrated LED automobile headlamp comprises a lens support, a lens, a reflecting cup and a light source assembly. The lens is installed on the reflecting cup through the lens support. The light source assembly is arranged in the reflecting cup. A low-beam reflecting hood and a high-beam reflecting hood are arranged in the reflecting cup and are opposite to each other. A cut-off line diaphragm is arranged at the front end of the low-beam reflecting hood. The light source assembly comprises a high-beam LED light source module and a low-beam LED light source module. The high-beam LED light source module faces the high-beam reflecting hood. The low-beam LED light source module faces the low-beam reflecting hood. According to the twin light integrated LED automobile headlamp, a low beam and a high beam are provided with the independent optical reflecting hoods respectively through the ingenious structure design; the cut-off line of the low beam can effectively protect the eyes of a driver of a car on the opposite side; the high beam is better condensed, the central luminance is high, and the irradiation distance is long; the optical axes of the high beam and the low beam can conduct illumination at the same time and coincide, and then a perfect light path light spot is formed.

The embodiment of the invention provides a transflective mode conversion method and a liquid crystal display panel, relating to the field of manufacturing of a liquid crystal display, wherein aperture ratio of the liquid crystal display and optical efficiency utilization rate are improved by regulating voltage and converting a transflective mode of the liquid crystal display panel. The liquid crystal display panel comprises an upper polarizer, a lower polarizer, a second substrate arranged below the upper polarizer and a first substrate arranged above the lower polarizer, wherein a reflection polarizer is arranged between the first substrate and the second substrate; a first liquid crystal layer is arranged between the first substrate and the reflection polarizer, and a second liquid crystal layer is arranged between the reflection polarizer and the second substrate; and a first electrode is arranged between the lower polarizer and the first substrate, a second electrode is arranged on the reflection polarizer, and a third electrode is arranged between the second substrate and the upper polarizer. The embodiment of the invention is applicable to transflective mode conversion of the liquid crystal display.

The invention discloses a display panel and a manufacturing method thereof and a display device. The display panel, the manufacturing method and the display device are used for improving the lighting effect and the use ratio of a backlight source. The display panel comprises an array substrate, a color film substrate and a liquid crystal layer located between the array substrate and the color film substrate, wherein the array substrate and the color film substrate are oppositely arranged. The color film substrate comprises a black matrix. The display panel further comprises a reflecting layer. The reflecting layer is located on the side, back on to the color film substrate, of the array substrate. The area of the reflecting layer corresponds to the area of the black matrix.

The invention discloses a backlight lighting device and a backlight lighting method thereof. The backlight lighting device comprises a point light source and a light guide plate, wherein the light guide plate is fixed in a packaging shell; a reflecting sheet is arranged on one side of the light guide plate; and a diffusing sheet and a brightening film are arranged on the other side of the light guide plate sequentially. The point light source is converted into a surface light source in a mode of placing the point light source in the centre of a hemispherical groove, or in a mode of printing reflective ink spots on the light guide plate or carving grid lines, or in a mode of adding nanometre light-scattering particles into the light guide plate. In the backlight lighting method, a light ray which is emitted from the point light source is converted into the surface light source by the light guide plate. The backlight lighting device and the backlight lighting method thereof have the advantages of uniform and soft light ray, relatively low light loss, high brightness, low cost and the like.

The invention discloses a display device. The display device comprises a display panel, a collimation membrane material structure, a liquid crystal lens structure and a human eye tracing unit for determining the positon of an observer in front of the liquid crystal lens structure, wherein the collimation membrane material structure and the liquid crystal lens structure are sequentially arranged on the light outlet side of the display panel, initial display gray-scale values of sub-pixels in the display panel are same and are maximum values, the collimation membrane material structure is used for modulating light emitted by the display panel to form collimation light, the liquid crystal lens structure is used for refracting the propagation direction of the collimation light corresponding to the sub-pixels to the position determined by the human eye tracing unit according to the position determined by the human eye tracing unit, the gray-scale values required to be displayed by the sub-pixels and the light intensity proportions corresponding to the gray-scale values required to be displayed by the sub-pixels. The display device combines a human eye tracking technology, determines the light-emitting directions of the pixels in the display panel, centralizes the light to the receiving position of the human eye, effectively improves the light effect utilization rate and reduces the power consumption.

The invention discloses a uniform light focusing LED light source module design method based on a free-form surface Fresnel lens. The method comprises the specific steps that a free-form surface partition area of the Fresnel lens is divided according to the number of LED light sources and the light emitting characteristic; then, the number of annular belts, a free-form surface, the height of the annular belts and a working side angle of the Fresnel lens are set according to light distribution requirements, so that the focal length, the numerical aperture and the light focusing angle of the Fresnel lens are obtained, and a Fresnel lens model and an LED light source module structure are acquired; and an illuminance distribution verification design effect is obtained by simulating the path of light rays refracted through the Fresnel lens. According to the uniform light focusing LED light source module design method based on the free-form surface Fresnel lens, the problems that traditional LED light source lenses are generally poor in light distribution effect, low in light focusing multiplying power, large in thickness, only capable of being matched with a single LED light source and the like are solved; the method can adapt to light source module designs of different light source numbers and different sizes; and an integrated uniform light focusing LED light source module large in area can be obtained through the characteristics of the free-form surface Fresnel lens.

The invention provides a double-curved surface reflecting mirror for a light condensation solar module. The double-curved surface reflecting mirror comprises a double-curved surface substrate and a reflecting layer, wherein the reflecting layer is arranged on the concave surface of the double-curved surface substrate. The double-curved surface reflecting mirror for the light condensation solar module is a light condensation device; the reflecting layer is arranged on the concave surface, so that the secondary light loss caused by coating a film on the convex surface of the traditional glass reflecting mirror can be reduced, and the light effect utilization rate is high; the focal length of the double-curved surface reflecting mirror is small, and is nearly 1/2 of that of a Fresnel light condensation mirror with the same or similar size, and the focal length of light spots is small, so that the solar module using the double-curved surface reflecting mirror as a light condenser has small occupied space, little material application and light system weight; the double-curved surface substrate can adopt materials such as glass with good weather resistance and difficulty in deformation, so that the service life of the double-curved surface reflecting mirror is prolonged.

An embodiment of the invention provides an optical modulator, a backlight module and a display device and relates to the technical field of display. Light emitted by a backlight passes by the optical modulator and then can output collimating light, and the light effect utilization rate is increased. The optical modulator comprises a first light dimming unit, a second light dimming unit and a third light dimming unit; the first light dimming unit is used for gathering light emitted by the backlight; the second light dimming unit is used for converting light passing the first light dimming unit into parallel light; the third light dimming unit is used for converting parallel light passing the second light dimming unit into vertical light. The optical modulator is used for collimating modulation of light output by the backlight.

The invention discloses a modular split type LED ring illuminator. The modular split type LED ring illuminator comprises a light-pervious protective cover, a driving power source and multiple LED illuminator modules, wherein the light-pervious protective cover comprises a cavity surface used for accommodating the LED illuminator modules, the driving power source is installed on the light-pervious protective cover and is detachably connected with the light-pervious protective cover, all the LED illuminator modules are electrically connected with the driving power source and detachably and evenly arranged on the cavity surface of the light-pervious protective cover in a surrounding and central symmetry mode, in this way, the internal gravity center of each LED lamp is centered on the circle center so that stability can be improved, and heat generated in each working area can be dissipated evenly and quickly, so that temperatures of different parts are kept consistent and temperature difference is small. The invention further discloses a manufacturing method of the modular split type LED ring illuminator. According to the method, procedures are compact and reasonable, and industrialization can be achieved easily. According to the modular split type LED ring illuminator and the manufacturing method thereof, manual detachment with tools is avoided, structure is optimized, service life is long, and cost is low.

The invention discloses a display panel and a display device. The display panel comprises a substrate, a reflecting layer located on the substrate, a dielectric grating layer, a filter layer and a color film layer; the color film layer comprises a first color film unit used for penetrating through light of a first color, a second color film unit used for penetrating through light of a second color, and a third color film unit used for penetrating through white light; the filter layer is used for transmitting the light of the first color and the second color, and reflecting the light of the third color; the dielectric grating layer comprises a grating unit corresponding to the position of the third color film unit; and the grating unit is used for reflecting the light of the first color transmitted by the filter layer to the first color film unit, and reflecting light of the second color transmitted by the filter layer to the second color film unit. The display panel provided by the embodiment of the invention improves the light utilization efficiency.

The invention discloses a spotlighting searchlight and a lighting method of the spotlighting searchlight and relates to the technical field of lamp lighting. The spotlighting searchlight comprises a reflector, a fixing frame, a Fresnel lens and a light source. The light source comprises a substrate and a light emitting face which are welded into a whole. The substrate is fixed into the reflector and is located at the end far away from a light outgoing opening. The fixing frame is a circular truncated cone frame. One end of the fixing frame is located outside the substrate and is fixedly connected with the reflector. The other end of the fixing frame is provided with a fixing ring in a welded manner and extends towards the direction of the light outgoing opening. The Fresnel lens is embedded into the fixing ring. The lens surface, located on the side of the fixing frame, of the Fresnel lens is a smooth surface, and the lens surface, located on the side of the light outgoing opening, ofthe Fresnel lens is engraved with multiple concentric grooves. The spotlighting searchlight can solve the problems that an existing spotlight is low in luminous efficacy utilization rate and cannot achieve large-power small-angle spotlighting, achieve ultra-high-power LED remote spotlighting and greatly improve the luminous efficacy utilization rate, the size of the lamp is reduced, the structureof the lamp is simplified, and the product application flexibility is improved.

The invention discloses a high beam and low beam integrated vehicle headlamp. The vehicle headlamp comprises a low-beam module, a high-beam module and a heat dissipation module which are located belowthe low-beam module, and a shading plate and a lens, wherein the shading plate and the lens are sequentially located in front of the low-beam module and the high-beam module. The low-beam module comprises a low-beam LED light source and a low-beam reflection cup corresponding to the low-beam LED light source. The high-beam module comprises a high-beam LED light source, a high-beam reflection cupcorresponding to the high-beam LED light source and a reflector corresponding to the light emitting port of the high-beam reflection cup, the height of the top of the reflector corresponds to the height of the light-emitting face of the low-beam LED light source, and light emitted by the high-beam LED light source is projected to the reflector after being collected by the high-beam reflection cupand is projected to the lens after being reflected by the reflector. The distance between the light-emitting surface of the low-beam LED light source and the light-emitting surface of the high-beam LED light source is reduced, the size of the system is reduced, and the lighting effect and the light energy utilization rate of the whole system are effectively improved.

The invention provides a high-efficiency double-layer internal-reflecting fluorescent tube in order to solve the problems that the fluorescent tube has low luminous flux and short service life in the prior art and make specific overall improvement on the existing fluorescent tube, which is completely different from the existing fluorescent tube. The fluorescent tube of the invention comprises an outer glass tube (1), internal coating powder (2) for the outer glass tube (1), an inner glass tube (5), external coating powder for the inner glass tube (5), a ring-shaped filament (3), a reflecting film (6) and a heat-insulating material (7), wherein the fluorescent tube is characterized in that the outer wall of the inner layer and the inner wall of the outer layer of the double-layer glass tube are coated with pure trichromatic fluorescent powder, and the thickness of the fluorescent powder coating the inner wall of the outer glass tube is reduced by half; the heat-insulating material is loaded in the internal space of the inner glass tube; the inner wall of the inner glass tube is coated with the reflecting layer; and the tube cap is particularly an H-shaped and ring-shaped glass tube cap provided with the ring-shaped filament, thus forming a device for preventing mercury spot and black spot.

The present invention discloses an illumination system for improving the collimation efficiency based on a Fresnel lens. The illumination system comprises light sources with different wavelengths, each light source is provided with a convergent lens, and the light rays emitted by a first light source, a fifth light source and a third light source pass through the convergent lenses and first dichroscopes respectively, and then the light rays at different angles are collimated through the Fresnel collimating lens; the collimated light rays pass through a second dichroscope , the light rays emitted by the fourth light source pass through the convergent lens and then pass through the second dichroscope, the second dichroscope enables the two kinds of light rays to form a light beam and converges the light beam into a dodging system, and the light beam sequentially passes through the dodging system, a light valve system and a projection system and is finally projected on a screen.

The present invention relates to a packing baseplate for an LED light source. The packing baseplate comprises a packing soleplate, a hollow packing box and heat conducting electrodes, wherein the heat conducting electrodes are installed on the upper base face of the packing box, the lower base face of the packing box is placed on the packing soleplate, and packing soleplate inside the packing box is provided with a protrusion. A wafer is fixed on the protrusion so that the wafer fixing surface is higher than the packing box, thereby solving the problem that effective light of 30% of peripheral lighting angles is shaded because the wafer fixing surface is lower than the packing box in the existing recessed packing with a flat plate. The back of the packing soleplate is provided with a chamber corresponding to the front protrusion, which is convenient for filling heat conducting materials and guarantees the tight joint between the back of the packing soleplate and a radiator for better heat conduction.

The invention discloses a double-free-form-surface optical lens for an LED (Light-emitting Diode) automobile dipped headlight. The double-free-form-surface optical lens is formed by combining two free-form surfaces, wherein the first free-form surface is an incident plane, and the second free-form surface is an exit surface; a chip is placed at a focal point part of an ellipsoidal reflector cup; a baffle plate is placed at the other focal point part; the lens is placed in front of the baffle plate; a light emitted by the chip is ejected from the other focal point through a condensing function of the reflector cup; and due to the function of the baffle plate, a stray light is blocked, and a condensed light is irradiated on a lighting surface through the correction of the lens so as to form a required lighting light spot. According to the double-free-form-surface optical lens for the LED automobile dipped headlight provided by the invention, the direction and the distribution of the light are controlled through the two free-form surfaces of the lens, so that a lighting area meets the requirements on light distribution and illuminance of the automobile dipped headlight according to the national standard. The double-free-form-surface optical lens for the LED automobile dipped headlight provided by the invention solves the problems of severe chromatic dispersion, high color temperature, low light effect utilization ratio and the like existed in an existing automobile lens lighting technology; and the lighting area meets the requirements on light distribution and illuminance of the automobile dipped headlight according to the national standard.

The invention discloses a car lamp manufacturing method, which includes the following steps of 1) producing a multi-angle light source module; 2) producing a constant-current driving circuit board; and 3) producing a lamp holder. The invention further discloses a car lamp manufactured by the car lamp manufacturing method. The car lamp manufacturing method is simple in process, low in cost, easy to realize and capable of quickly manufacturing car lamps with large lighting angle and fine lighting effect. In the car lamp, disc-shaped light sources and elongated light sources of the multi-angle light source module are distributed scientifically to form a novel light distribution scheme, light distribution is convenient and flexible, lighting angle is large, light distribution by conventional lighting panels or lenses can be avoided, and error appearing in secondary lens optical simulation and affection on light effect from actual construction mounting can be reduced well. In addition, the projections with light reflecting function and heat radiation boosting function are arranged, thereby light distribution effect can be improved well, heat radiation effect can be improved, and the service life of the car lamp can be prolonged effectively.

The invention relates to the technical field of plant illumination, in particular to a plant illuminating device and an LED proportioning method of plant growing spectrum. The plant illuminating device comprises a shell, a driving power supply and an LED light source are arranged in the shell, the driving power supply is connected with the LED light source, the LED light source comprises a plurality of sets of LED lighting modules, and each set of LED lighting module comprises white light LEDs, blue light LEDs and red light LEDs at the number ratio of 5-9:1-4:1-5. The white light LEDs, the blue light LEDs and the red light LEDs in the light source are proportioned proportionally, light emitted by the LEDs is beneficial to growth of plants and manual illumination work, light utilization efficiency can reach 90%, energy is saved, environment is protected, and the plant illuminating device is low in production cost, long in service life and applicable to wide popularization and use.

The invention relates to an LED (light-emitting diode) flooding total-reflection lens and an LED lamp using the same. The total-reflection lens is characterized in that the total-reflection lens is a solid of revolution; the solid of revolution is formed in such a manner that a broken line revolves around the optical axis of the total-reflection lens; a blind hole for installing an LED light source is formed on the incidence surface of the total-reflection lens; the axis of the blind hole coincides with the optical axis of the total-reflection lens; the LED light source is arranged in the blind hole; the light-emitting chip of the LED light source falls on the incidence surface of the total-reflection lens and the optical axis of the light-emitting chip coincides with that of the total-reflection lens; a concave sphere is also arranged on the emergence surface of the total-reflection lens; and the sphere center of the concave sphere falls on the optical axis. The total-reflection lens has the following beneficial effects that the total-reflection lens adopts the broken line as a revolving generatrix, so that the size of the LED lamp can be small as much as possible and the lighting effect utilization rate is high on the premise that the LED lamp meets the illuminance requirement; and the angle of the LED light near the optical axis can be expanded via the concave sphere on the emergence surface, thus partial light can not be excessively centralized and the LED lamp has high uniformity of illuminance in the irradiated region with the light-emitting angle being 20 degrees.

The invention discloses a refraction type shadowless operating lamp which is characterized by comprising a plurality of light source assemblies and a refractor. The light source assemblies use LEDs as light sources and are annularly disposed along the inner side of the edge of a lamp shell. The light source assemblies concentrate the light of the LEDs into linear light beams to be refracted into the refractor, and the light beams are refracted by the refractor to form a shadowless lighting area A. The refractor is an integral lens medium, the central part of the refractor extends outwardly to form an arc-shaped structure, an inner arc surface and an outer arc surface are formed, the inner arc surface and the outer arc surface are of a trapezoid structure, or the inner arc surface is of a trapezoid structure, and the lens medium of the refractor is transparent or semi-transparent. The refraction type shadowless operating lamp is good in radiating performance, high in lighting effect utilization rate, low in LED light attenuation, and the like.

The invention discloses a reflection spectrum imaging system for near-to-eye display in the technical field of optics, which is formed by combining an image projection unit (100) and an optical lens (200) with a reflection spectrum imaging function, and the image projection unit (100) is an image source projection optical system containing red (R)/green (G)/blue (G) and other monochromatic narrow-band spectrum characteristics, the optical lens (200) is provided with an optical reflection surface matched with the image projection unit (100) and is plated with an optical film (201) with a narrow-band spectrum reflection imaging function, and image light output by the image projection unit (100) can be directly projected to the inner surface of the optical lens (200), and reflected to the retina of the human eye by the optical thin film (201) to be imaged and form an amplified virtual image in front of the human eye, so that the aim of near-to-eye display is fulfilled. The LED display screen has the advantages of being good in human eye adaptability, high in imaging quality, high in display definition, excellent in perspective performance, capable of being designed to be light, thin and small, and easy to achieve industrial large-scale production.