107results about How to "Reduce luminous flux" patented technology

An LED chip and method of fabricating the same is disclosed that comprises a plurality of sub-LEDs, said sub-LEDs interconnected such that the voltage necessary to drive said sub-LEDs is dependent on the number of said interconnected sub-LEDs and the junction voltage of said sub-LEDs. Each of said interconnected sub-LEDs comprising an n-type semiconductor layer, a p-type semiconductor layer, and an active or quantum well region interposed between the n-type and p-type layers. The monolithic LED chip further comprising a p-electrode having a lead that is accessible from a point on a surface opposite of a primary emission surface of the monolithic LED chip, the p-electrode electrically connected to the p-type layer, and an n-electrode having a lead that is accessible from a point on the surface opposite of the primary emission surface, the n-electrode electrically connected to the n-type layer. These sub-LEDs interconnected by at least a metallization layer on the n-type and p-type layers, which is insulated so that it does not short the sub-LEDs. Further, the LED chip is capable of being electrically coupled for operation without wire bonds.

The invention discloses an acousto-optic tunable filter imaging spectrometer which is applied to the field of remote sensing. The invention relates to a hyperspectral imaging technology in the remote sensing field and an integrated system, wherein the technology is a novel method by combining an acousto-optic tunable filter taken as a band selector with area array imaging technology; and the system comprises a pre-optical system, the acousto-optic tunable filter, a post-optical system, an area array detector, a radio-frequency signal generator and a data collecting system. The invention can be applied to various remote sensing fields of ground detection, airborne detection, satellite-borne detection and deep space detection, passively receives reflex of an object to obtain an atlas cube of the object to be detected and can flexibly choose observation wave band by an electric tuning way.

The invention discloses a PC (Polycarbonate) material with an excellent transparent light diffusion function and a preparation method thereof. The PC material is composed of polycarbonate, flame retardant masterbatch, an auxiliary flame retardant, a compound light diffuser, an antioxidant, a flame retardant synergist, a lubricant and other auxiliaries. The principle ingredient of the PC material is PC resin; the PC material is extruded by two steps, wherein the first step is to blend a sulfonate type major flame retardant and an organic silicon flame retardant with the PC resin by melting and granulate the mixture through extrusion by virtue of a twin-screw extruder so as to obtain the light diffusible flame retardant masterbatch, and the second step is to add the compound light diffuser, the flame retardant masterbatch, the antioxidant, the flame retardant synergist, the lubricant and other auxiliaries for further melting blending by taking PC as the major ingredient, and then extrude and granulate the mixture. The flame-retardant light diffusible PC material provided by the invention can be widely applied to an LED (Light-Emitting Diode) lamp, the backlight of a liquid crystal display, a transmission type screen, a decorative lighting billboard, an advertisement lamp box and the like in the lighting field.

A colored translucent printing ink comprises colored printing ink, glass oil, hardener and thinner. The weight ratio of the components is 50 to 10-40 to 25-40 to 10-20. The invention aims to provide a colored translucent printing ink which has the advantages of low cost and high visible light absorption rate and consequently changes the transmissivity of the visible light. When light source is absent or is weak, light can not permeate substrate material but can permeate and display pictures provided that strong backlight exists.

The invention discloses a multiple-head lamp focusing device for surgery operation luminous device, which comprises the following parts: connecting rack, lever rack, connecting rod and lever, wherein the distance between two racks and lightness can be adjusted along with the separation angle of light axle and focusing device axle, which focuses the light on the axle center; the multiple-head lamp can be assembled on multiple circumstances at the same axle; one connecting rack and lever rack load one or more connecting rods and levers.

The lighting installation comprises an electrical power supply line (3) and at least one lighting device (21A; 21B; 21C) with controllable light emission, connected to said electrical power supply line (3). Each lighting device is associated with a control unit (25A, 25B, 25C) comprising a device (30) for receiving data transmitted along the electrical power supply line (3) and devices (41; 60) for generating a light emission regulation signal. The electrical power supply line is connected to a controller (27) with a means (83) of transmitting data toward the control unit (25A, 25B, 25C). Additionally, the controller is programmed to send at least one data element to the control unit for regulating the emission of the corresponding lighting device.

The invention discloses a small-sized echelette grating spectrometer. The small-sized echelette grating spectrometer comprises an optical input unit, a panel waveguide structure, a small-sized grating light splitting module and a linear array detector, wherein the panel waveguide structure comprises an upper waveguide plate and a lower waveguide plate, the upper waveguide plate and the lower waveguide plate are placed in a parallel mode, and the reflecting surface of the upper waveguide plate and the reflecting surface of the lower waveguide plate are vertically arranged in an opposite mode, so that an optical channel is formed between the reflecting surfaces, and light from the optical input unit spreads in the optical channel; after collimation, dispersion and convergence are carried out on the light rays in the direction parallel to a panel, a spectrum image is formed, and is received by the linear array detector, and the light is reflected between an upper panel reflector and a lower panel reflector in the direction perpendicular to the panel, and is limited in a waveguide thin layer. Therefore, the size of a corresponding collimation optical element, the size of a corresponding dispersion optical element and the size of a corresponding convergence optical element in the perpendicular direction can be quite small, and the size of a whole optical system can be remarkably reduced. The optical elements used in the small-sized echelette grating spectrometer are low in requirement for the processing technology, and production cost can be reduced.

The invention relates to a lens of an LED street lamp, which is arranged right ahead of an LED light source. The inner side surface of the lens, which is close to the LED light source, is provided with a recessed horizontal transverse surface, and the outer side surface of the lens, which is far away from the LED light source, is provided with a longitudinal cylindrical surface; the middle of the longitudinal cylindrical surface is provided with two recessed inclined cylindrical surfaces which respectively stand at both sides of the longitudinal cylindrical surface; both sides of the transverse cylindrical surface are processed to installation planes; both ends of the lens are provided with recessed arc, triangular, square or trapezoidal clamping grooves used for installation and fixation; light rays emitted from the LED light source are diffused to two mutually perpendicular directions through the transverse cylindrical surface and the longitudinal cylindrical surface, the luminous flux of the middle can be reduced because a middle inclined cylindrical surface exists, the luminous flux of both ends can be increased due to the reflex action of the light rays, and uniform dumbbell-shaped light spots are finally formed. The invention enables the light rays passing through the lens to be more uniformly distributed, enhances the length-width ratio of the light spots and the uniformity degree of light on a radiation surface and can meet the using requirements of the street lamp.

The invention relates to a roller gap measuring and regulating method of a four-roller paint applicator. A device for the method comprises a four-roller paint applicator, wherein shaft heads at both ends of an upper rubber roller and a lower rubber roller are respectively arranged on a slide block, and one side of a roller gap between the upper rubber roller and the lower rubber roller is provided with a set of narrow laser generators which horizontally irradiate to the roller gap; a light path at the other side of the roller gap between the upper rubber roller and the lower rubber roller is provided with a set of photo-electric receiving converters; and output wires of the photo-electric receiving converters are connected with a stepping motor control circuit. The roller seam measuring and regulating method is characterized in that the measurement of a flexible roller gap in the four-roller paint applicator is realized by a narrow laser beam arranged on a precise measuring tool. The method has the advantages of higher precision, accurate control and simple circuit when utilized to measure and regulate the roller gap.

The invention discloses a surface treatment technology for a ceramic substrate of an LED (light-emitting diode) area light source. The surface treatment technology comprises the following steps of: firstly, washing a ceramic substrate provided with a fixed LED chip and a bonding wire area on the surface by deionized water, drying and then carrying out radio frequency washing; after that, covering a mask plate on the ceramic substrate; covering the fixed LED chip and the bonding wire area by the mask plate, and coating even mixture of silica gel, disperse powder, anti-setting powder and fluorescent powder onto the mask plate; and uncovering the mask plate, heating and curing to obtain the ceramic substrate coated with a light reflecting layer, wherein the ceramic substrate can be used for preparing the LED area light source. After the surface of the ceramic substrate is treated by the surface treatment technology, the reflectivity of the ceramic substrate is effectively increased, the lost luminous flux caused by transmitting the substrate downward can be reduced, a lighting effect of the LED area light source is improved, and the surface performance of the ceramic substrate can be well protected.

The embodiment of the invention provides a display panel and a display device. According to the display panel, an optical adjustment layer is arranged between a touch layer and a cover plate layer to replace a polaroid, the optical adjustment layer comprises a black matrix and a plurality of dimming units, the black matrix comprises a plurality of first openings, at least one dimming unit is arranged in one first opening, emergent light of the display panel is led out through the dimming units, the refractive index of the side, close to the substrate, of the dimming unit is smaller than that of the side, away from the substrate, of the dimming unit, and meanwhile the dimming units are provided with two high-light-transmittance materials with different refractive indexes, so that external incident light is totally reflected on an interface between the two high-light-transmittance materials with different refractive indexes and is absorbed by the black matrixes located on the two adjacent sides of the adjusting unit, the luminous flux of ambient light entering the display panel is reduced, meanwhile, the contrast ratio of the display panel is improved, and the light emitting efficiency of the display panel is further 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 invention discloses an eye imaging system and method which relates to the field of an ophthalmic optical instrument and aims at removing ghosts of shoot during the eye examination to obtain a high-quality image. The device comprises a light source module (101), a light splitting module (102), a common light path module (103), an eye (104), an eye fundus (105), an image receiver (106), a moving optical module (107), an observation diaphragm (108), a light source power supply module (201), an image receiver driving module (202), a control treatment display module (203) and a moving driving module (204). The moving optical module (107) at least comprises the light splitting module (102); the moving driving module (204) is connected with the moving optical module (107) and drives the moving optical module (107), so that illumination lights are reflected to the image receiver (106) to expose after scanning the eye (104) and are spliced and imaged by the control treatment display module (203), and the device and method is mainly used for fundus examination.

A surface light source device includes a light source facing a reflective surface of a reflecting member, and a light-controlling member composed of a transparent material and disposed across the light source from the reflecting member in such a manner as to face the reflective surface, the light-controlling member guiding light emitted from the light source in a predetermined direction. The light-controlling member has on a surface thereof remote from the reflective surface projections arranged on a plane. The projections have profiles of at least one kind, each having a symmetry axis or a symmetry plane. The symmetry axes or the symmetry planes of the projections are tilted at a predetermined angle with respect to a direction in which the light controlling member faces the reflecting member.