30results about How to "Control luminous intensity" patented technology

An interactive type showcase comprises a containing unit, a light-transmitting face plate, a sensor, light source modules and a processing unit, wherein the containing unit is provided with a show shelf used for placing exhibited merchandise; the light-transmitting face plate is arranged on the front face of the containing unit, can be a transparent display panel and can also be provided with a touch area partially; the sensor can be a photo sensor and / or a proximity sensor; the light source modules are arranged in the containing unit and used for illuminating the exhibited merchandise on the show shelf; the processing unit controls the light source modules according to induction results or preference of users. Thus, the luminous intensity, the luminous chromaticity, the luminous color temperature, the luminous frequency spectrum and / or the illumination angles of light sources inside the light source modules are changed by means of the induction results of the sensor or operation conducted by consumers on the touch area, and therefore the optimal luminous effect is obtained.

The related control method for LED used as decorative lighting lamp comprises: applying IR technology to remote control the LED, using MCU or ASIC to code or random control signal, arranging an external analog electric signal input interface and pre-set remote control coding data memory, using embedded-MPU to receive signal and generate digital PWC signal to control RGB current of every LED. This invention is benefit to build individual dynamic lighting atmosphere.

The invention provides a uniform light-emitting device which comprises light-emitting diodes and a light-reflecting cover. Each light-emitting diode is a single-side light-emitting type light-emitting diode, and the light-reflecting cover is a diffused reflection light-reflecting cover. At least three single-side light-emitting type light-emitting diodes are arranged in a circle according to the shape of the light-reflecting cover in the light-reflecting cover, and the light-emitting faces of the light-emitting diodes face to the outside of the circle and are opposite to the light-reflecting cover. The direction position of the single-side light-emitting type light-emitting diodes is adjusted according to needed direction, and the single-side light-emitting type light-emitting diodes irradiate the light-reflecting cover with a proper distance and an incidence angle, then illumination of corresponding irradiated region on the light-reflecting cove is adjusted, and light irradiating the entire side wall of the light-reflecting cover is further more uniform. Meanwhile, colors corresponding to the light-emitting diodes are selected, the light-emitting intensity of various light-emitting diodes is controlled, and any required light color can be mixed. In addition, after the diffused reflection light-reflecting cover is adopted, light emitted by the light-emitting diodes irradiates the surface of the diffused reflection light-reflecting cover and is scattered completely, all of the light shines to a translucent screen, and the utilization rate of the light energy is high.

A light emitting diode package according to an embodiment of the present invention includes a plurality of red LEDs, green LEDs and blue LEDs arranged for emitting a white light using a color mixing, at least one white LED emitting the white light and a printed circuit board having a circuit pattern for driving the plurality of red LEDs, green LEDs, blue LEDs, and white LEDs.

A sunlight irradiation simulator comprises a power control unit, a power regulator, a sensor, a light wall, a control host and a display. The power regulator receives the radiation strength which is radiated by the light wall to a measured object by the sensor and then processes and transmits the radiation strength to the control host; by comparing the radiation strength with a set target value, the control host returns the result thereof to the power regulator which then regulates the power that is supplied to the light wall by a light source control unit according to the returned result and controls the radiation strength of the light wall. The simulator solves a series of problems in the aspect that the light source strength is not easily controlled. The light wall sends light wave which simulates the solar radiation spectrum, and thus causes the experiment to be more suitable for the real natural environment, truer and more reliable.

The invention discloses a photo-stimulation and signal acquisition probe, which comprises a probe substrate, wherein the probe substrate comprises a front end part and a rear end part, wherein the front end part, which is of a sharp structure, is implanted in an organism, and the front end part is provided with a sensor and a light emitting source; and the rear end part is provided with a sensor electrode electrically connected to a sensor, a light emitting source electrode electrically connected to the light emitting source and a public electrode. The probe provided by the invention, which is simultaneously integrated with a light emitter light emitting unit and a sensor detection unit for photo-stimulation, can facilitate operations.

The invention belongs to the technical field of luminescent materials, and particularly relates to borosilicate rare earth luminescent microcrystalline glass, and a preparation method and applicationthereof. The chemical composition of the borosilicate rare earth luminescent microcrystalline glass is aMO.bLn<2>O<3>.cB<2>O<3>.dSiO<2>.eAl<2>O<3>: xBi, yGe, zRE. According to the invention, rare earth ions including RE, Bi, Ge, Al and the like are doped into the microcrystalline glass, and a crystal field around the rare earth ions is further adjusted by utilizing different ion radiuses, coordination potentials, bond types, bond lengths, coordination numbers and the like of the rare earth ions, so the control of color and luminous intensity is facilitated; and through sensitization of Bi ionsto other rare earth ions (such as Tb<3+>, Eu<3+>, Tm<3+>, Dy<3+> and the like), the microcrystalline glass has higher luminous intensity and can be applied to LED luminescent devices.

An apparatus controlling a cold cathode fluorescent lamp and a scanning apparatus having the same are disclosed. The scanning apparatus including the fluorescent lamp and a scan unit comprises: a central processing unit (CPU) controlling the scan unit to be in one of the stand-by mode, the scan mode and the sleep mode and outputting a square signal having a variable duty ratio based on the operation mode of the scan unit; a rectifying unit receiving the square wave signal from the CPU, rectifying the square wave signal into the level of DC voltage based on the duty ratio of the square wave signal, and outputting the rectified DC voltage; a feedback unit detecting the voltage applied to the fluorescent lamp and outputting the detected voltage as a feedback signal; a controlling unit controlling the illumination of the fluorescent lamp based on the voltage that is inputted from the feedback unit, the controlling unit outputting a control signal variably controlling the voltage applied to the fluorescent lamp depending on the level of DC voltage that is inputted from the rectifying unit; and a drive unit applying variable AC voltage to the fluorescent lamp based on the control signal that is inputted from the controlling unit, thereby driving the fluorescent lamp.

The invention provides a paper positioning and driving device for a label printer and an application method thereof. The structure comprises a mechanical structure and an electrical structure, whereinthe electrical structure is arranged to make contact with and fixed to at least one element of the mechanical structure, the mechanical structure comprises a structural part, an infrared light-emitting tube, a first photosensitive sensor and a second photosensitive sensor, the structural part is used for fixedly installing electronic components of the electrical structure, the electrical structure drives the infrared light-emitting tube to emit light through a generated control signal, and the first photosensitive sensor and the second photosensitive sensor receive infrared light emitted by the infrared light-emitting tube. According to the method, the above-mentioned device is adopted for positioning / driving, the problem that label paper is inaccurate in positioning and poor in compatibility is effectively solved on the premise of low cost, accurate positioning of label consumables and black label consumables can be achieved, and the reliability of products is greatly improved.

The invention discloses a liquid display, a backlight module and a control method used for the backlight module, wherein, the backlight module is provided with a first luminous element and a second lumination element with different colour systems; the first luminous element is provided with a first luminous period; the second luminous element is provided with a second luminous period; the control method of the invention comprises the steps as follows: the luminous intensity of the first luminous element is sensed by at least twice so as to obtain at least two first sensing signals; the luminous intensity of the second luminous element is sensed by at least twice so as to obtain at least two second sensing signals; according to the first sensing signal and the second sensing signal, and the luminous intensity of the first luminous element and the second luminous element are respectively controlled or compensated according to the first sensing signal and the second sensing signal. The liquid crystal display device, the backlight module and the control method of the backlight module can save the cost and the usage space of the circuit, and effectively control or compensate the suitable luminous intensity of the luminous element.

The invention provides a control method for a fluorescent transparent ceramic high power LED light source. The blue light LED chip array of a high power light source is divided into several areas. An equal amount of some red light LED chips are added into a blue light chip of each area. The blue light chips and red light chips in the areas are controlled by separate current sources, the current of the red light chips is maintained to be unchanged, the change value Delta Vf of the forward voltage drop of the red light chips in a selected time period is monitored in real time through an A / D module, a temperature change amount Delta T of the red light chips is obtained according to a formula Delta T = Delta Vf / k, if Delta T exceeds a limit threshold T1, an output mode of the current source of the blue light chips of the area is adjusted through a MCU single chip microcomputer, line current is changed into a preset pulse current mode from a DC current mode, and when the voltage drop of the red light chips is smaller than Delta Vf, which means that the temperature change amount of the red light chips is reduced to a set threshold T2, the input current mode of a blue chip array is restored to the DC mode.

The invention provides a method for the luminescence of a microwave electrodeless ultraviolet light source, comprising the steps as follows: microwaves from a microwave source are collected and transmitted through wave-collecting materials; the microwaves are gathered around a microwave electrodeless ultraviolet illuminant; the luminescence intensity of the microwave electrodeless ultraviolet illuminant is adjusted through regulating the degrees of the collected microwaves. The invention also provides a device for realizing the method, the structure of which is that the device consists of a microwave generator, a microwave-collecting device and an electrodeless ultraviolet illuminant. The electrodeless ultraviolet illuminant is arranged below the microwave generator; the microwave-collecting device is arranged around the electrodeless ultraviolet illuminant, and leads the microwave to be gathered around the illuminant. The method for the luminescence of the microwave electrodeless ultraviolet light source and the device for realizing the method can be applied for the photo-catalytic synthesis, the sterilization and disinfection and the water treatment, and can lead the electrodeless illuminants with lengths more than 80 cm to glow, control the luminescence intensity, improve the resource utilization, and reduce power consumption with wide application.

The present invention relates to the field of medical devices, in particular to a two-in-one eye chart light box, which includes a box body, a transmission shaft, a motor, an eye chart, a travel switch, a remote controller, a light-emitting board, a control unit and a receiving unit. The transmission shaft is connected to the top of the box, and the vision chart is wound on the transmission shaft; the travel switch is electrically connected to the control unit; the receiving unit is used to receive the signal from the remote control, and the control unit controls the light-emitting panel and motor. The box is also provided with a light guide plate and reflective paper, the eye chart is sandwiched between the light guide plate and the front panel of the box, and the luminescent plate is sandwiched between the light guide plate and the reflective paper; the box is also equipped with an electromagnetic Iron, the electromagnet is electrically connected with the control unit, and the eye chart is provided with a magnetic piece used in conjunction with the electromagnet. The invention realizes the switching of different eye charts by controlling the transmission shaft through the remote controller, and can adjust the luminous intensity of the light box to meet the needs of patients, thereby improving the accuracy of visual inspection.

The invention relates to the technical field of intelligent electronic devices and provides an energy-saving lamp module. The energy-saving lamp module comprises a power supply chip, a single-chip microcomputer, at least one CMOS switch and at least one LED lamp, wherein the power supply output end of the power supply chip is connected with one end of the CMOS switch, and the other end of the CMOS switch is connected with the LED lamp; the signal control end of the single-chip microcomputer is respectively connected with the CMOS switch and the power supply chip; the single-chip microcomputer is used for sending out a first control signal to the power supply chip at the first moment to control the power supply chip to output constant voltage and first constant current; meanwhile, the single-chip microcomputer sends out a PWM signal to the CMOS switch to control the CMOS switch to perform PWM dimming on the LED lamp; the single-chip microcomputer is also used for sending out a second control signal to the power supply chip at the second moment to control the power supply chip to output constant voltage and second constant current; the second constant current is smaller than the first constant current.

The invention discloses an illuminating-adjustable controller with high sensitivity. The illuminating-adjustable controller comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first diode, a second diode, a third diode, a fourth diode, a special touchable light adjusting chip, a touch piece, a thyristor and a lamp tube. For the adjustable illuminating controller disclosed by the invention, through the repeated touch to the touch piece, the luminous intensity of the lamp tube can be controlled, the adjustable illuminating controller has the advantages of being higher in sensitivity, simple in integral structure, lower in use cost, convenient to use, low in static power consumption and reliable in operation, and the adjustable illuminating controller has a higher popularization and promotion value.

The invention relates to an LED display module and an LED display screen, the LED display module comprises a PCB substrate, the front surface of the PCB substrate is fixedly provided with a front surface circuit, the back surface of the PCB substrate is fixedly provided with a back surface circuit, the front surface circuit is electrically connected with the back surface circuit, a driving chip is fixedly arranged in the PCB substrate, and the driving chip is electrically connected with the front surface circuit and the back surface circuit. A light-emitting chip set is fixedly arranged on the PCB substrate, the light-emitting chip set is electrically connected with the front circuit, and packaging glue for packaging the light-emitting chip set and the front circuit is further arranged on the PCB substrate. Compared with the prior art, the layout of the LED display module is optimized, heat dissipation is accelerated, and cost is reduced.

The invention discloses an LED lamp with high color rendering and adjustable color temperature, and comprises a cavity as well as an LED chip and a fluophor which are arranged in the cavity; wherein the LED chip comprises at least two blue light chips and at least one yellow light chip which are all arranged at the bottom part of the cavity; and the fluophor is composed by red fluorescent powder, green fluorescent powder and glue, and is filled in the cavity. The invention also discloses a manufacturing method of the LED lamp with high color rendering and adjustable color temperature, comprising the steps as follows: at least two blue light chips and at least one yellow light chip are positioned at the bottom part of the cavity; and the red fluorescent powder and green fluorescent powder are mixed by the glue to form a fluophor to be filled in the cavity. The invention matches the blue light chips with the yellow light chip, rationally arranges the number and position of the two chips, changes the driving electric current and adjusts the dosage ratio of the red fluorescent powder and green fluorescent powder so that a white light LED lamp with high color rendering index and adjustable color temperature can be manufactured.

The invention discloses a light-emitting diode encapsulation driving method. The method includes: applying different driving currents to multiple red LEDs, green LEDs and blue LEDs and driving the LEDs independently according to colors of the LEDs so as to form white light by color mixing, or applying current to white LEDs to emit white light, wherein the red LEDs, green LEDs, blue LEDs and white LEDs are separated and connected by circuit patterns of a printed circuit board, and the LEDs in each color are driven independently. The light-emitting encapsulation driving method has the advantages that the white LEDs are arranged together with the LEDs in the three primary colors for color mixing so as to form a light-emitting diode encapsulation, so that light with good color rendition and brightness can be provided, brightness of the white LEDs are used for improving brightness, light output of the LEDs in the three primary colors for color mixing needs not to be increased, the LEDs of the light-emitting diode encapsulation can be prevented from degradation, and the white light with superior color mixing characteristics can be emitted.

The invention discloses a method for enabling an automobile interior lamp to form a mixed color streamer effect and the automobile inteior lamp, wherein a first light source and a second light sourceare arranged at the left end and the right end of a light guide element of the automobile interior lamp respectively, and each of the first light source and the second light source comprises a light-emitting element capable of emitting red primary color light, green primary color light and blue primary color light. The first light source and the second light source are electrically connected withthe controller, the controller is used for controlling the light-emitting elements of the three primary colors to emit light simultaneously or randomly according to a specific time sequence, and lightemitted by the first light source and the second light source is projected into the light guide elements from the two ends of the light guide elements to be conducted. Therefore, the light guide element generates a mixed color and a visual effect of light flowing. As long as a small number of LED light sources are used, the light rays can be mixed in the light guide element to change the light emitting color by controlling the LEDs to emit light simultaneously or randomly according to a specific time sequence, so that the light guide element has the visual effects of mixing the light rays andenabling the light rays to flow.

The invention discloses a cosmetic mirror with a holding structure. The cosmetic mirror comprises a cosmetic mirror body and a mirror rod (42) matched with the cosmetic mirror body, the cosmetic mirror body comprises a back shell (10), a mirror body and a control system, the mirror body and the control system are both installed on the back shell (10), a back groove (44) is further formed in the opposite side where the mirror body is installed on the back shell (10), and the mirror rod (42) is installed on the back groove (44) through a hinge (37). The defect that in the prior art, a cosmetic mirror with a light source is poor in light source quality or uneven in light can be overcome. According to the cosmetic mirror, the special light source mirror body structure design is adopted, a circuit structure used for light source control is combined, light homogenization can be achieved, the light quality is effectively improved, meanwhile, after the mirror rod is connected with the cosmeticmirror body, multi-angle pitching operation of the cosmetic mirror body can be achieved, and therefore multi-angle observation of a user is facilitated.

The invention relates to the technical field of scanning equipment, in particular to an image acquisition device for a flat scanner. An AD sampling module comprises a CIS acquisition unit and an HT82V36 analog-to-digital conversion unit which are in electric signal connection with an MCU main chip, wherein the 11th end of the CIS acquisition unit processor U1 is sequentially connected with a resistor R11, a triode Q3 and a resistor R5 in series; the tenth end of the processor U1 is sequentially connected with a resistor R12, a triode Q2 and a resistor R3 in series; the ninth end of the processor U1 is sequentially connected with a resistor R13, a triode Q1 and a resistor R1 in series; the other end of the resistor R5, the other end of the resistor R3 and the other end of the resistor R1 are all connected with the MCU main chip. By optimizing the control circuit of the CIS, the light emitting intensity and the lighting-on and lighting-off speeds of the LED lamp in the CIS are better controlled, signal conversion and output are better and more quickly completed, and the situations that signal noise is too high and damage occurs are not likely to happen.

The present invention relates to the technical field of intelligent electronic equipment. By providing an energy-saving lamp module, it includes a power chip, a single-chip microcomputer, a plurality of CMOS switches and a plurality of LED lamps, and the power output end of the power chip is connected to one end of a plurality of CMOS switches. The other end of the switch is connected to a plurality of LED lamps respectively, and the signal control terminals of the single-chip microcomputer are respectively connected to a plurality of CMOS switches and the power supply chip; The first constant current, at the same time, the single-chip microcomputer sends PWM signals to a plurality of CMOS switches respectively, to control a plurality of CMOS switches to carry out PWM dimming to a plurality of LED lamps; The control signal is used to control the power supply chip to output a constant voltage and a second constant current, wherein the second constant current is smaller than the first constant current, thereby effectively saving electric energy and prolonging life.

The invention discloses a space illuminance distribution measurement and interactive light adjustment control method and device. According to the control method, more than one illuninzce sensor is arranged in a room space, and by adopting an illuminance frequency conversion technology, all sensed illuminance valves are converted to a periodic signals with different frequencies, so that a good signal to noise ratio can still be obtained in long-distance transmission; based on a digital frequency detection technology, illuminance measurement module set can obtain the illuninance value at a certain collocation point as long as the frequency of a received signal is sensed; and based on a digital direct current frequency conversion technology, a light adjustment control module set can the luminous intensity of each light-adjustable illuminating lamp in multiple stages. By using the space illuminance distribution measurement and interactive light adjustment control method and device provided by the invention, the illuninance at all points can be measured and the luminous intensity of all light-adjustable illuminating lamps can be controlled, and meanwhile the efficacy of low cost is achieved.

A control method for fluorescent transparent ceramic high-power LED light source, which divides the blue LED chip array of the high-power light source into several regions; adds an equal amount of red LED chips to the blue chips in each partition; and the red light chip are each controlled by a separate current source, keeping the current of the red light chip constant, and monitoring the change value ΔVf of the forward voltage drop of the red light chip within a selected time period through the A / D module in real time, according to ΔT= ΔVf / k is the temperature change ΔT of the red light chip. If ΔT exceeds the limited threshold T1, the output mode of the current source of the blue light chip in the partition is adjusted through the MCU microcontroller, and the line current is changed from a DC current mode to a preset pulse. In the current mode, when the voltage drop of the red chip is less than ΔVf, that is, when the temperature change of the red chip drops to the set threshold T2, the input current mode of the blue chip array is restored to the DC mode.

An embodiment of the invention discloses a light-emitting diode package which comprises a plurality of red LEDs (light-emitting diodes), green LEDs, blue LEDs, at least one white LED and a printed circuit board. The red LEDs, the green LEDs and the blue LEDs emit white light by mixing colors, the white LEDs emit white light, and the printed circuit board is provided with circuit patterns for driving the red LEDs, the green LEDs, the blue LEDs and the white LEDs.

The disclosed semiconductor heterojunction comprises: a broad band-gap n+ doped electron emission layer, a narrow band-gap n- doped layer contacted and grown on last layer by a mutation heterojunction, an active layer grown on last layer, and a p-type doped layer grown on the n- layer. Wherein, a quantum trap formed near the n- light-doped side, and a potential barrier is formed on n+ side. The relative LED based on former semiconductor heterojunction can control its luminous intensity by changing the voltage on n- doped layer.

The invention discloses a cosmetic mirror adopting multi-contact control. The cosmetic mirror comprises a back shell, a cosmetic mirror body, a control circuit board, a battery and a controller adopting a touch control mode or an infrared control mode, the cosmetic mirror body, the control circuit board and the battery are installed on the back shell in a matched mode, and the controller is also installed on the back shell and controls the light emitting intensity of the cosmetic mirror body or / and on-off of power supply of the cosmetic mirror body. The infrared control mode controller comprises an infrared PCB, a light-transmitting plate and a light-blocking silica gel sheet which are arranged in sequence, the infrared PCB is arranged at a hole reserved in the back shell, and an infraredtransmitter and an infrared receiver are further arranged on the infrared PCB; a special light source mirror body structure design is adopted, and a circuit structure for light source control is combined, so that light homogenization can be realized, and the light quality is effectively improved; and an infrared or touch control mode is adopted, so that the cosmetic mirror can be turned on and off, the brightness can be adjusted, great convenience is brought to a user, and the user experience is effectively improved.

The invention discloses a light supplementing device and a robot, the light supplementing device comprises a light intensity acquisition module, a control module, a first controllable switch module and a light supplementing module, the light intensity acquisition module can acquire the light intensity of the current environment of the robot, and the control module adaptively controls the on and off of the first controllable switch module according to the light intensity. The luminous intensity of the light supplementing module is in negative correlation with the light intensity of the current environment. Compared with the prior art, the light supplementing device is additionally arranged in the robot, the light emitting intensity of the light emitting module can be adaptively adjusted according to the light intensity of the environment of the current position where the robot is located so that it can be guaranteed that a camera can shoot clear photos, and it is guaranteed that the camera can correctly make contact with an electrode; and thus, the reliability of automatic recharging of the robot is improved.

The invention relates to the field of movable lighting, and particularly discloses a method and a system for controlling the illumination intensity of an LED table lamp. The method comprises the following steps: transmitting a standard white light beam to the surface of paper, and enabling the standard white light beam to be perpendicular to the surface of the paper; according to the CIE coordinate (Xn, Yn) of reflected light, acquiring the offset (Xc, Yc) of the reflected light in a standard CIE coordinate (X0, X0), the spectrum FC corresponding to the offset (Xc, Yc) and the variation (see the specification for the expression) of the reflected light intensity relative to that of the standard white light beam; and controlling the driving currents of a warm light LED, a cold light LED, a red light LED, a blue light LED and a green light LED in the LED table lamp according to the (Xc, Yc), FC and the variation of the reflected light intensity. By obtaining (Xc, Yc) of the reflected light and the variation of the reflected light intensity and controlling the luminous intensity of the warm light LED, the cold light LED, the red light LED, the blue light LED and the green light LED according to (Xc, Yc), FC and the variation of the reflected light intensity, the spectrum corresponding to the reflected light on the paper is close to the sunlight spectrum saturation, and excessive fatigue of eyes caused by glare due to excessive reflection or diffuse reflection is prevented.