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.

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.

The invention relates to an LED street lamp applied to roadways, tunnels and other places where the requirement on illumination uniformity is higher. The LED street lamp comprises a light distribution system, a heat sink, a lamp body, a driving circuit and a light fixture installation adjusting mechanism; LED luminescence units are installed on one side of the light distribution system; the axial direction of each LED luminescence unit points at each zone of an object; the LED street lamp is also provided with an optimal optical system required by street illumination light distribution; power supply is controlled by the driving circuit in a shunt control way after the LED luminescence units are connected in series and in parallel; the heat sink is arranged on the other side of the light distribution system, thereby each LED luminescence unit can be ensured to be operated under normal temperature; and by installing the adjusting mechanism and a horizontal alignment device, the problem of ray offset as the position of the light fixture is not in place during the installation of the light fixture can be overcome.

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.

A spectrograph is disclosed generally comprising a radiation source and a dispersion device that includes a plurality of segments arranged adjacently along a plane upon which the radiation is incident, where each of the segments disperses the radiation differently than adjacent segments. In certain embodiments, each segment can be rotated and titled separately from the other segments. In some embodiments, the dispersed radiation is received by a detector in a plurality of spectral channels corresponding to the segments and including radiation of different spectral orders.

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 utility model provides a backlight module, comprising a light source, a light guide plate and a prism brightness enhancement film. A plurality of groove structures are arranged on the light reflecting surface of the light guide plate, each groove structure has a first concaved surface facing to the light source and a second concaved surface backward the light source, the included angle of the first concaved surface and the flat light reflecting surface is not exceed 35 degree. The utility model has the advantages of increasing the luminous flux of angular field of view to human eye, reducing the luminous flux totally reflected by microprism structure of the prism brightness enhancement film, enhancing effectively the brilliance of light guide plate and promoting further the light extraction efficiency of backlight module.

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 provides a display substrate, a display device and a manufacturing method for the display substrate. The display substrate comprises a substrate, a first electrode layer and a second electrode layer, wherein the first electrode layer is located between the substrate and the second electrode layer; the second electrode layer comprises a light-transmitting region; the light-transmitting region comprises a plurality of pattern islands and a plurality of inter-island connecting lines; every two adjacent pattern islands are electrically connected through the inter-island connecting lines; the areas, except the pattern islands and the inter-island connecting lines, in the light-transmitting region are hollowed-out regions; and the orthographic projections of the pattern islands onthe first electrode layer cover the electrodes of the first electrode layer. According to the technical scheme, the problem that an existing display substrate is low in light transmittance is solved.

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 provides a display backplane, a manufacturing method thereof and a display device. Wherein the display backplane comprises a substrate; A thin film transistor array disposed on one surface of the substrate; An ultraviolet light shielding layer arranged on a side of the thin film transistor array away from the substrate; A pixel bounding layer disposed on a side of the ultraviolet light shielding layer remote from the substrate; A thin film encapsulation layer disposed on a side of the pixel bounding layer remote from the substrate, wherein the pixel bounding layer contains a light conversion material capable of emitting ultraviolet light under excitation of infrared light. The inventors have found that the display backplane is simple in structure, easy to implement, and doesnot need to use an expensive ultraviolet photomask to reduce the production cost of the display backplane.

The invention relates to an automatic adjusting method for LED (Light Emitting Diode) luminous flux, which comprises the following steps that: a linear relation between luminous flux output by an LED and the working temperature of the LED and a linear relation between the duty cycle of PWM (Pulse Width Modulation) signals and the luminous flux output by the LED are established and stored in a controller, a temperature sensor reads the working temperature t of the LED and inputs the working temperature t of the LED into the controller, the controller obtains the duty cycle N(t)% of the PWM signals according to the working temperature of the LED, the controller outputs the duty cycle of the PWM signals to a driver and the driver controls the make and break of an LED circuit to automatically adjust the LED luminous flux. With the change of the temperature of the LED, the duty cycle of the PWM signals of LED drive current is changed to change the brightness of the LED.

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 present invention relates to a fluorescent lamp, and in particular to a fluorescent lamp with an improved in-dark starting characteristic. A fluorescent lamp includes: a glass bulb (101) having a discharge space therein; two external electrodes (102 and 103) provided at both ends of the glass bulb; and a phosphor layer (106) provided on an inner surface of the glass bulb. The glass bulb is made of glass that contains 3% to 20% inclusive of sodium oxide. The phosphor layer includes phosphor particles (106R and 106G) containing no alumina and phosphor particles (106B) containing alumina. A metal oxide (107) is attached to surfaces of the phosphor particles containing alumina. Sodium oxide precipitated on the inner surface of the glass bulb improves the in-dark starting characteristic. The phosphor particles containing alumina are protected by the metal oxide for being susceptible to deterioration due to reaction thereof with sodium oxide.

The invention brings forward a wavelength conversion device and a light-emitting device in which the wavelength conversion device is applied. The wavelength conversion device comprises a wavelength conversion layer which is used for absorbing exciting light and emitting stimulated light, and further comprises a light splitting and filtering device which is positioned on one side of the first surface of the wavelength conversion layer, and a reflection device which is used for reflecting the stimulated light and is positioned in one side of the second surface of the wavelength conversion layer. The wavelength conversion device further comprises a light extraction layer which is positioned between the light splitting and filtering device and the reflection device, wherein the thickness of the light extraction layer is less than or equal to 45% of the circumradius of a light spot formed on the wavelength conversion layer by the exciting light. With the wavelength conversion device and the light-emitting device of the invention, and by using the restriction on the thickness of the light extraction layer and the reflection of the stimulated light between the reflection device and the light splitting and filtering device, the decrease speed of the luminous flux of the light emitted from the side surface of the light extraction layer is lower than the decrease speed of etendue, and therefore the light has high brightness.

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 discloses a temperature compensation LED lamp system of body type temperature sampling. The temperature compensation LED lamp system comprises an LED light source module and a temperature compensation circuit, wherein the LED light source module is composed of a set of LEDs, a temperature sensor is arranged in the LEDs, the LED light source module is an illuminant and also a temperature sampling device, the temperature sensor is connected with an LED driving power source to conduct current adjustment through the temperature compensation circuit, the output current is reduced by the temperature compensation circuit at the high temperature, when the temperature is reduced, the output current is increased by the temperature compensation circuit, and the LED light source module reaches the hot balance state in the safe temperature region. The temperature compensation LED lamp system has the advantages that the LED body is used as the temperature detecting technology, when the temperature of an LED lamp exceeds or is lower than the set control temperature, output of a driver can be increased or decreased, the phenomena that light failure and short service life, caused by the excessive heat, of an LED lamp are caused are avoided, and the LEDs stably and reliably work at the constant temperature from beginning to end.

The invention discloses a method for recovering fluorescent powders of a light emitting diode, belonging to the field of application of photoelectric technology. The method for recovering fluorescentpowders of a light emitting diode comprises two steps of washing colloids by using a cleaning agent and drying the washed fluorescent powders. The fluorescent powders recovered according to the methodcan be directly used, and can be re-prepared into fluorescent glue coinciding with regulations by adding colloids according to a required proportion, so that the production cost can be obviously reduced, and the environment pollution can be lightened.

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.

The invention provides a photoelectric sensor, which comprises a photoelectric conversion unit used for receiving optical signals and converting the optical signals into electric signals; and an optical processing layer arranged at the light entering side of the photoelectric conversion unit and used for processing the optical signals to reduce luminous flux of light reaching the photoelectric conversion unit. The invention also provides a display panel comprising the photoelectric sensor, and a display device. The photoelectric sensor can be used in high light intensity, so that light intensity range capable of being accurately measured by the display panel and the display device can be improved greatly.

Provided are an electrophotographic-photosensitive element and an electrophotographic device, which are used in a high speed / resolution color machine of a positively charging type and which are excellent in dot-reproducibility and graduation. Also provided is an electrophotographic-photosensitive element, which can realize the optimum sensitivity characteristics for each device merely by adjusting the film thickness percentage. The electrophotographic-photosensitive element is positively charged into a laminated type by laminating a charge transport layer, which includes a positive hole transport material and a first adhesive resin, and a charge generating layer, which includes a charge generating material, a positive hole transport material and a second adhesive resin, sequentially on a conductive base member. The contents of the charge generating material in the charge generating layer are within a range over 0.7 wt. % and below 3.0 wt. % in the same layer.

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.

The invention relates to a high-pressure discharge lamp for vehicle headlights, comprising a discharge vessel (10) which is sealed in a gas-tight manner and which has a discharge chamber (106). Electrodes (11, 12) and a filling for producing a gas discharge are enclosed in the discharge chamber, wherein the filling is designed as a mercury-free filling that contains at least xenon and halides of sodium, scandium, and zinc. The filling has an amount of zinc halide ranging from 0 mg to 1 mg per 1 cm3 of the discharge chamber volume; the amount of halides that is present in the discharge chamber (106) of the discharge vessel (10) ranges from 8 mg to 15 mg per 1 cm3 of the discharge chamber volume; the cold fill pressure of the xenon ranges from 1.0 megapascal to 1.8 megapascal; and the volume of the discharge chamber (106) of the discharge vessel (10) has a value ranging from 0.015 cm3 to 0.022 cm3.