78results about How to "Narrow spectrum" patented technology

A method and apparatus to control a lighting source such as a streetlight and modulate the output of the lighting source so that artificial illumination is reduced when moonlight is available to illuminate the area. The apparatus includes a sensor assembly for detecting moonlight in the night sky, an electronic circuit for processing the sensor signals in combination with moonrise and moonset data, and modulating the power applied to the lighting source in response to the intensity of the incident moonlight.

Methods and compositions for the treatment of skin disorders (e.g., acne, rosacea) are described.

VCSEL diode comprises a bottom electrode (10), conducting substrate material (11), a bottom mirror (12) formed by a multilayer distributed Bragg reflector (DBR) of certain conductivity and reflectivity RA, and an active region (13) comprising a plurality of layers some of which are quantum wells. It also comprises a top mirror (14) formed by a multilayer distributed Bragg reflector (DBR) with reflectivity RB<RA and conductivity of a second type. There are a number of layers (15, 18) which through a process of selective oxidation (exposure to a high temperature wet atmosphere) may be selectively converted to oxide layers, therefore producing well defined internal oxide apertures within the top mirror. There is a high-conductivity semiconductor top contact layer (17), a top electrode layer (19) with a centrally located aperture from which light is emitted, and a trench (16) which defines a mesa type VCSEL. The VCSEL comprises at least one oxide suppression layer in the top mirror whose function it is to suppress high order transverse optical modes.

The invention provides a display device, a display panel thereof, and a transparent display panel. A first sub-pixel of the transparent display panel is arranged to comprise a light-transmitting area and a non-light-transmitting area, wherein the non-light-transmitting area is provided with a first light reflecting anode, a first light-emitting structure layer and a first cathode in a stacked mode, and the light-transmitting area completely wraps the non-light-transmitting area, or the non-light-transmitting area completely wraps the light-transmitting area. The light emitted by the first light-emitting structure layer can be reflected back and forth between the first light-reflecting anode and the first cathode for multiple times to form a microcavity effect, so that the light-emitting efficiency is enhanced, the frequency spectrum is narrowed, and the display quality of the transparent display panel is improved; when the full screen displays, the color coordinates of the light-transmitting display area and the non-light-transmitting display area are basically consistent, and deviation is avoided. The non-light-transmitting area is completely wrapped by the light-transmitting area, or the non-light-transmitting area is completely wrapped by the light-transmitting area, so that light emitted by one first sub-pixel can be uniformly diffused to all pixels around, the color coordinate offset is reduced, and the color rendering consistency under different visual angles is improved.

The invention discloses a backlight module and a display device. The backlight module comprises a glass cavity and blue light-emitting diodes. The glass cavity is internally provided with red light quantum dot material and green light quantum dot material in a packaging mode. The two ends of the glass cavity are each provided with one blue light-emitting diode. The red light quantum dot material and green light quantum dot material in the glass cavity correspondingly emit red light and green light after being excited by light emitted by the blue light-emitting diodes. In this way, the quantum dot material is arranged in the glass cavity in the packaging mode, the two ends of the glass cavity are each provided with one blue light-emitting diode, and the quantum dot material correspondingly emits red light and green light after being excited by the light emitted by the blue light-emitting diodes, so that the red light and the green light are mixed with blue light reflected by the surface of the glass cavity to form white background light, the function of a backlight source is achieved; besides, the two ends of the glass cavity are provided with the blue light-emitting diodes serving as excitation light sources, and narrow frame design of the display device is facilitated.

The invention relates to an organic electroluminescent device, a display panel and a display device. The organic electroluminescent device comprises a first electrode, a second electrode and an organic layer located between the first electrode and the second electrode. The organic layer comprises a light-emitting layer, the light-emitting layer contains a main material, a thermal activation delayed fluorescence sensitizer and a green fluorescent dye, and the green fluorescent dye has a structure as shown in a formula I. The thermal activation sensitization fluorescence technology is used, andthe green fluorescent dye with a specific structure, the sensitizing agent and the main material are matched for use so that the effects of narrowing the spectrum of the device and improving the colorpurity of green light are achieved, the device has the efficiency equivalent to that of a phosphorescent green light device, and the display panel comprising the device has a relatively high displaycolor gamut area.

The invention discloses an electroluminescence device, which structurally and sequentially includes a substrate / a conducting layer / a hole injection layer / a hole transmission layer / an electronic blocking layer / a luminous layer / a hole blocking layer / an electronic transmission layer / an electronic injection layer / a cathode layer, wherein the luminous layer adopts a composite layer structure; the composite layer structure sequentially includes a first blue light luminous layer / a first quantum well / a red light-green light phosphorescence luminous layer / a second quantum well / a second blue light luminous layer; the first blue light luminous layer is prepared on the surface of the electronic blocking layer; and the hole blocking layer is prepared on the surface of the second blue light luminous layer. According to the electroluminescence device provided by the invention, the first and the second blue light luminous layers are placed on the two sides of the red light-green light phosphorescence luminous layer respectively, so that the illumination of the red light and the green light can be completely excited by the emitted blue light, the energy utilization ratio is improved, and further the luminous efficiency can be enhanced.

Provided is a microwave-signal generating method and device based on the excited brillouin scattering effect and the optical frequency comb in high nonlinear fibers. The invention belongs to the technical field of microwave photonics. The device comprises a tunable laser, a first coupler, a second coupler, a first circulator, a second circulator, a first high nonlinear fiber, an attenuator, a fourth coupler, a first photoelectric detector, a power divider, an intensity modulator, a fourth DC voltage regulator, a first double parallel mach-zehnder modulator, a fifth DC voltage regulator, a sixth DC voltage regulator, a seventh DC voltage regulator, a third circulator, a second high nonlinear fiber, a third coupler, a second photoelectric detector, a microwave amplifier, a second double parallel mach-zehnder modulator, a first DC voltage regulator, a second DC voltage regulator, a third DC voltage regulator, an isolator, a fifth coupler, a third photoelectric detector and a frequency analyzer. Due to the advantages of mode selection and positive feedback of a photoelectric oscillator, the microwave signals which are output by the device have the advantages of good spectrum purity and low noises.

The invention is directed to a multispectral illumination device for a microscope or for a reader. According to the invention, the illumination device comprises at least three receptacle positions for lighting modules and at least one receptacle position for coupling modules, the mechanical devices for connecting the lighting modules or coupling modules at the receptacle positions to the illumination device being designed in such a way that the lighting modules or coupling modules can be easily changed. Further, the receptacle positions are arranged in such a way that, with suitable selection of the lighting modules and coupling modules, all individual spectra of the lighting modules in a total spectrum are available simultaneously at the output of the illumination device.

The invention discloses a white light electrogenerated light-emitting apparatus, which comprises the structure including a substrate, a conductive layer, a hole injecting layer, a hole transmitting layer, an electron stop layer, a light emitting layer, a hole stop layer, an electron transmitting layer, an electron injecting layer and a cathode layer in sequence; the light emitting layer is a composite layer structure, and the composite layer structure comprises the following layers of a red phosphor light emitting layer, a first interval layer, a blue light emitting layer, a second interval layer and a green phosphor light emitting layer in sequence; and the red phosphor light emitting layer is prepared on the surface of the electron stop layer, and the hole stop layer is prepared on the surface of the green phosphor light emitting layer. According to the invention, light emitting layers of blue light emitting materials, red and green light phosphor materials are applied in the white light electrogenerated light-emitting apparatus, red and green light phosphor light emitting layers are respectively arranged on both sides of the blue light emitting layer, therefore the triplet state energy of blue light can be fully captured, and the light emitting efficiency is further increased.

A bidirectional direct sequence spread spectrum half-duplex RF modem. The RF modem can be applied to transmit and receive numerous types of analog and digital pulse modulation. The modem incorporates a SAW based correlator for performing the spreading and de-spreading functions in the transmitter and receiver. A programmable frequency synthesizer provides the frequency source for various signals in the modem including the local oscillator (LO), IF interrogating pulse and clock signals. An upconverter / downconverter provides frequency translation to the desired frequency band. Pulse gating and interrogating pulse shaping are employed to reduce the spectral side bands of the transmitted spread pulse. The RF modem operates as a analog or digital pulse transmitter and receiver. It is adapted to be generic and is versatile enough to be used in many different types of data communication systems, such as OOK, PWM and PPM. The RF modem can be used as the physical (PHY) layer in a layered communication system such as the ISO OSI communication stack. In an alternative embodiment, the transmission bit rate is increased by using a plurality of correlators wherein each is configured with a unique function (i.e., code) that is orthogonal to the other functions.

An ultra low-power transmission system for use with a battery-operated device. The ultra-low power transmission system comprises an encoded transmitter and an addressable ultra -low power receiver. The ultra low-power receiver comprises an RF front-end block for receiving and demodulating an incoming RF signal. The RF front-end block includes an amplifier for amplifying the received RF signal and a frequency discriminator for demodulating the amplified RF signal to produce a baseband signal. The amplifier and the frequency discriminator are each comprised of enhancement mode, high-mobility electron transistors (E-HEMTs). The ultra low-power further receiver comprises a correlator for receiving the baseband signal from the frequency discriminator and detecting a codeword therein. The correlator comprises a plurality of switched capacitors for storing samples of the baseband signal. The correlator is operable to couple the plurality of switched capacitors in order to integrate the samples stored thereon.

Disclosed is a multi impulse-adding amplifier. Femtosecond laser parameter chirp impulse laser amplifier comprise beam divider, frequency converter, multi-pulse adding amplifier, frequency doubler, impulse stretcher, delay lines, dichroic mirror and non-linear crystal. The pumping light and light signal are generated from the same light impulse, controlling the optical path difference via delay lines and realizing full synchronizing.

A bidirectional direct sequence spread spectrum half-duplex RF modem. that can be applied to transmit and receive numerous types of analog and digital pulse modulation. The modem incorporates a SAW based correlator for performing the spreading and de-spreading functions in the transmitter and receiver. A programmable frequency synthesizer provides the frequency source for various signals in the modem including the local oscillator (LO), IF interrogating pulse and clock signals. An upconverter / downconverter provides frequency translation to the desired frequency band. Pulse gating and interrogating pulse shaping are employed to reduce the spectral side bands of the transmitted spread pulse. The RF modem operates as an analog or digital pulse transmitter and receiver. It is adapted to be generic and is versatile enough to be used in many different types of data communication systems, such as OOK, PWM and PPM. The RF modem can be used as the physical (PHY) layer in a layered communication system such as the ISO OSI communication stack. In an alternative embodiment, the transmission bit rate is increased by using a plurality of correlators wherein each is configured with a unique function (i.e., code) that is orthogonal to the other functions.

A method for population and patient-specific medication therapy review using a computer particularly adapted for a medication therapy management or health care delivery organization is provided, wherein the method includes at least the steps of: collecting patient claims data; reviewing the patient claims data for accuracy and data integrity; identifying particular characteristics sought within the patient claims data; organizing and structuring the patient claims data; establishing a set of clinical rules; transforming the set of clinical rules established into a computer language, and entering the transformed clinical rules into an electronic database; and analyzing the patient claims data by applying the clinical rules using a computer particularly adapted for a medication therapy management or health care delivery organization, thereby producing an analytical result. In further embodiments, the analytic results are used to evaluate the need for patient-level medication therapy review and, optionally, to actually conduct a patient-level medication therapy review based on the review of the analytic results.

The invention discloses a high-temperature hard solder quasi-continuous semiconductor laser bar stack encapsulating method. n bars, n+1 conductive cooling partition blocks and n+1 electric-insulating cooling fins are stacked alternately and welded in a reflowing mode at one time through high-temperature hard solder with a special tool clamp to form a laser bar stack unit, and then the laser bar stack unit and a heat sink are welded in a reflowing mode again through soft solder with relatively low temperature. The method can obviously reduce welding stress in the high-temperature hard solder quasi-continuous semiconductor laser bar stack encapsulating process, prolong the service life of devices and improve the output rate and the photoelectric performance.

Radiation occurs when current is injected into an active layer from electrodes. A pair of clad layers is disposed sandwiching the active layer, the clad layer having a band gap wider than a band gap of the active layer. An optical absorption layer is disposed outside at least one clad layer of the pair of clad layers. The optical absorption layer has a band gap wider than the band gap of the active layer and narrower than the band gap of the clad layer. A spread of a spectrum of radiated light can be narrowed.

The present invention relates to the field of communication and transmission of signals. In particular, the present invention relates to a new communication and / or modulation method. The present invention also relates to improving channel occupancy. The present specification discloses the adoption of phase transitions / changes in a manner that indicates a code by virtue of their position (timing) in the communication. This is referred to as Phase Position Modulation.

The invention relates to the technical field of display, and discloses an organic light emitting device. The organic light emitting device comprises a light emitting unit, wherein the light emitting unit has m types of light emitting wavelengths, is a monochromatic organic light emitting diode or a white organic light emitting diode with an optical filter, at least one organic light emitting diodeis provided with a microcavity structure, the microcavity optical path L of the organic light emitting diode with the optical fiber and the light emitting wavelength Lambda of the corresponding lightemitting unit conform to the following relation expression: L=nLambda, n is more than or equal to 2 and is a positive integer, the n corresponding to the at least one organic light emittingdiode is more than or equal to 3, i is less than or equal to m but more than or equal to 1, and i and m are positive integers. The n-order microcavity effect can be achieved in the organic light emitting diode with the microcavity structure, the n is the positive integer more than or equal to 2, a second-order microcavity, a third-order microcavity, a fourth-order microcavity or higher-order microcavity can be achieved, the microcavity effect is improved, the spectrum is further narrowed, and the color gamut area is further expanded.

The invention provides a data transmission method applied to a label end in a passive radio-frequency identification system, which has the technical scheme that codes with the same length are adopted for a binary datum 0 and a binary datum 1, in addition, the binary datum 0 is coded in a high-level or low-level coding mode without jumping at a middle phase, and the binary datum 1 is coded in a rising-edge or trailing-edge coding mode with jumping at a middle phase. Through the coding method provided by the invention, the phase jumping between coding waveforms of two adjacent binary data in the coding process can be avoided for solving the problem of phase jumping between the coding waveforms of the two adjacent binary data in the existing coding method.

The present invention relates to an illumination device (1) for providing a controllable illumination configuration. The illumination device comprises a light-source unit (2; 20) comprising a plurality of individually controllable solid state light-sources (8); and an optical element (3) arranged to modulate light from the solid state light-sources through a modulation area (16) of the optical element (3). The illumination device (1) further comprises an actuator (4) connected to the light-source unit (2) and controllable to move the light-source unit relative to the optical element (3) in such a way that the solid state light-sources (8) pass the modulation area (16) of the optical element (3) in succession; and a control unit (5) configured to control each of the solid state light-sources (8) to emit light with a time-varying intensity corresponding to the illumination configuration while the solid state light-source (8) moves past the modulation area of the optical element.

The invention provides a display panel and a display device, the display panel comprises a first display area and a second display area, wherein the first display area comprises a first anode, a pixeldefinition layer and a light emitting function layer; the first anode comprises a first transparent conducting layer, a first metal reflecting layer and a second transparent conducting layer which are sequentially stacked, and the first metal reflecting layer is arranged on the first transparent conducting layer and corresponds to the light-emitting unit; the first metal reflecting layer is provided with a groove; the display device comprises the display panel. The grooves are formed in the metal reflecting layer, the first metal reflecting layer in each pixel area is partially and totally reflected, and part of the first metal reflecting layer can be semi-transparent and semi-reflective; when light emitted by the light-emitting functional layer is reflected back and forth between the first reflecting layer and the cathode, a micro-cavity effect is formed, so the transmissivity is improved, the efficiency loss of the under-screen position is not too high, the service life is prolonged, and the imaging quality of the under-screen camera is improved.

The invention discloses a method for generating a light source needed by cultivation of rare Chinese medicinal herbs, belonging to the field of cultivation of Chinese medicinal herbs and relating to the field of photovoltaic agriculture, in particular to the technical field of supply of an appropriate planting light environment to the cultivation of rare Chinese medicinal herbs by adopting a light-electricity-light converting technology. Specific to the problem of the lack of rare Chinese medicinal herb resources in China, the invention provides a method for generating a light source needed by cultivation of rare Chinese medicinal herbs. In the method, a large-sized integrated solar panel is manufactured for photoelectric conversion, and electric energy is converted into a light source ofa special spectral coverage needed by rare Chinese medicinal herbs with a semiconductor solid illuminating technology. According to the method, the problem of difficulty in cultivating genuine Chinese medicinal herbs can be solved effectively, large-sized photovoltaic rare Chinese medicinal herb cultivation demonstration centers can be built in depressed areas with sufficient sunlight on a large scale, and special technical support and a demonstration platform are provided for the photovoltaic industrial development of rare Chinese medicinal herbs.

The invention provides a high-power semiconductor laser unit of a low thermal stress structure. The high-power semiconductor laser unit of the low thermal stress structure has low thermal stress and can be adapted to complex working environments. The high-power semiconductor laser unit mainly comprises four structure layers which are stacked sequentially, the first layer is a heat sink serving as a positive electrode connection block, the installation plane of the heat sink is provided with a chip installation region and an insulating region, the second layer comprises a semiconductor laser unit chip and an insulating strip, the semiconductor laser unit chip is welded to the chip installation region, the insulating strip is installed in the insulating region, the third layer is an electrode connection layer playing a conductive role, and the fourth layer is a negative electrode connection block. In the electrode connection layer, the portion welded to the semiconductor laser unit chip is of a plane dentiform structure and used for reducing the thermal stress between the electrode connection layer and the chip, a gap is formed between the portion and the negative electrode connection block, and other portions of the electrode connection layer are welded to the negative electrode connection block.

Narrow pulses transmitted wirelessly from a transmitting antenna to a receiving antenna are used to measure the electrical permittivity of the medium of interest between the two antennas. Timing signals are transmitted along a shielded transmission line coincident with the wireless transmission through the medium. The received waveform is digitized in the time domain and analyzed to determine the propagation time. The effects of dispersion caused by the conductive and dielectric properties of the medium on the transmitted waveform are overcome through analysis of the digitized waveform, resulting in an accurate measurement of the propagation time and thus the permittivity of the medium, from which volumetric moisture content may be derived.

An automatic microscope apparatus intended to be used in the phase contrast imaging of living cells. The apparatus includes a sample plate station in which a sample plate containing a sample to be examined can be fitted, as well as a microscope. The microscope includes an optical element, an imager and an illumination arrangement that can be arranged to illuminate the sample. The illumination arrangement includes an LED illuminator to provide illumination.

Acoustic signal tones of a hearing aid need to be adjusted to the particular situation so as to be easy to hear, i.e. on the one hand they should not be too loud in quiet situations, and on the other hand they should not be too quiet in noisy situations. In order to fulfill these requirements, the acoustic signals of the hearing aid according to the invention are shifted up or down in frequency if the ambient noises are extremely pronounced, particularly in the frequency band range of the acoustic signals.

The invention provides a data encoding method applied to a label end in a passive radio frequency identification system. According to the technical scheme, binary data 0 and binary data 1 are encoded in same length, wherein if the binary data 1 is encoded in the manner of jumping the middle phase, the binary data 0 is encoded in the manner of not jumping the middle phase, and if the binary data 0is encoded in the manner of jumping the middle phase, the binary data 1 is encoded in the manner of not jumping the middle phase. Through the data encoding method provided by the invention, the phasejump probability between the encoding waveforms of two adjacent binary data in the encoding process can be reduced so as to solve the problem that the phase jump probability between the encoding waveforms of two adjacent binary data is relatively high in the traditional encoding method.

The invention relates to the technical field of display, and discloses an organic electroluminescence device and organic electroluminescence equipment. The device comprises an organic luminescent diode with the luminescent wavelength of lambda, wherein the organic luminescent diode comprises a microcavity structure; the relation between the microcavity optical path of the organic luminescent diodeand the luminescent wavelength of the organic luminescent diode meets the relational expression that L=n lambda, wherein lambda is greater than or equal to 577 nm and smaller than or equal to 492 nm;n is greater than or equal to 3, and is a positive integer; the organic luminescent diode comprises a first electrode layer, a luminescent layer and a second electrode layer which are stacked in sequence; the first electrode layer comprises a reflecting layer, a light compensating layer and a transparent anode layer which are stacked, and the transparent anode layer is arranged close to the luminescent layer. The organic luminescent diode corresponding to green light luminescent wavelength can realize three-step microcavity or higher-step microcavity, so that the spectrum is narrowed effectively, and the color gamut area is increased. The technical problem that a traditional green light device is difficult to realize color gamut expansion like a red light device or a red light device dueto the personal limitation is solved.