Abstract: The invention relates to the field of optically-carried information technology and provides a method and device for optically-carried information transmission based on full-spectrum LEDs. The method addresses the problem of visual perception interference caused by multi-color LEDs used for data transmission in the prior art. The method includes: dividing the data to be transmitted according to the first transmission demand information, obtaining a second preset number of data segments; selecting target monochromatic LEDs based on the luminous characteristics of the LEDs and the first transmission demand information; processing the data segments using the target LEDs and preset modulation algorithms to generate corresponding LED control signals; and controlling the target LEDs to transmit optically-carried information based on the control signals.

Abstract: A motorized crushing apparatus includes a zero voltage detector, a manual switch, a motor driver, a motor and a controller. The zero voltage detector is coupled to an AC power source. When a varying voltage of the AC power source is below zero, the zero voltage detector generates a first signal. When the varying voltage of the AC power source is above zero, the zero voltage detector generates a non-zero signal. The manual switch is provided for a user to select a crushing pattern from multiple candidate crushing patterns. The controller is coupled to the zero voltage detector, the manual switch and the motor driver. The controller generates a control signal corresponding to the selected crushing pattern to alternatively turn on and turn off the motor driver under a schedule pattern.

Abstract: The invention relates to the field of lighting technology and addresses the issues of poor light efficiency and stability in existing full spectrum white light LED implementations, which provides a full spectrum semiconductor lighting device and health lighting fixture, which includes: blue light LED chips and fluorescent powders. The blue light LED chips comprise at least a first and second blue light chip, each with peak wavelengths within a specific wavelength range, differing from each other. The fluorescent powders include first, second, third, and fourth fluorescent powders, each with peak wavelengths in distinct wavelength ranges. Through the synergistic use of chips and fluorescent powders, the invention enables the resulting full spectrum lighting devices to have higher light efficiency and stability.

Abstract: A single-mode micro-laser based on a single whispering gallery mode optical microcavity and a preparation method thereof described includes: preparing a desired single whispering gallery mode optical microcavity doped with rare earth ions or containing a gain material such as quantum dots, wherein an optical microcavity configuration include a micro-disk cavity, a ring-shaped microcavity, and a racetrack-shaped microcavity; a material type include lithium niobate, silicon dioxide, silicon nitride, etc.; preparing an optical fiber cone or an optical waveguide of a required size which can excite high-order modes of the optical microcavity, such as a ridge waveguide and a circular waveguides; and coupling, integrating, and packaging the optical fiber cone or the optical waveguide with the microcavity. A pump light is coupled to the optical fiber cone or the optical waveguide to excite a compound mode with a polygonal configuration.

Abstract: A single-mode micro-laser based on a single whispering gallery mode optical microcavity and a preparation method thereof described includes: preparing a desired single whispering gallery mode optical microcavity doped with rare earth ions or containing a gain material such as quantum dots, wherein an optical microcavity configuration include a micro-disk cavity, a ring-shaped microcavity, and a racetrack-shaped microcavity; a material type include lithium niobate, silicon dioxide, silicon nitride, etc.; preparing an optical fiber cone or an optical waveguide of a required size which can excite high-order modes of the optical microcavity, such as a ridge waveguide and a circular waveguides; and coupling, integrating, and packaging the optical fiber cone or the optical waveguide with the microcavity. A pump light is coupled to the optical fiber cone or the optical waveguide to excite a compound mode with a polygonal configuration.

Abstract: The present invention relates to a pest monitoring method based on machine vision. The method includes the following steps: arranging a pest trap at a place where pests gather, and setting an image acquisition device in front of the pest trap to acquire an image; identifying a pest in the acquired image, and obtaining a number of pests; extracting multiple suspicious pest images from a region of each identified pest in the image, and determining identification accuracy of each suspicious pest image, if the number of pests is greater than or equal to a preset threshold for the number of pests; and calculating a predicted level of pest damage based on the number of pests and the identification accuracy of each suspicious pest image. The present invention acquires a pest image automatically through the image acquisition device in front of the pest trap.

Abstract: The present invention relates to a pest monitoring method based on machine vision. The method includes the following steps: arranging a pest trap at a place where pests gather, and setting an image acquisition device in front of the pest trap to acquire an image; identifying a pest in the acquired image, and obtaining a number of pests; extracting multiple suspicious pest images from a region of each identified pest in the image, and determining identification accuracy of each suspicious pest image, if the number of pests is greater than or equal to a preset threshold for the number of pests; and calculating a predicted level of pest damage based on the number of pests and the identification accuracy of each suspicious pest image. The present invention acquires a pest image automatically through the image acquisition device in front of the pest trap.

Abstract: Method for preparing micro-optical structure on a film based on chemical mechanical polishing etching, combining photolithography technology with chemical mechanical polishing technology to make preparation and large-scale integration of large-size high-quality micro optical devices on-chip possible. The method comprises coating metal on film surface, selectively removing the metal film by photolithography (such as femtosecond laser selective ablation, ultraviolet photolithography, electron beam etching, ion beam etching, and reactive ion etching), chemical mechanical polishing, chemical corrosion or over polishing and other steps. Micro-optical devices on-chip prepared by the method have extremely high surface finish and extremely low optical loss.

Abstract: Method for preparing micro-optical structure on a film based on chemical mechanical polishing etching, combining photolithography technology with chemical mechanical polishing technology to make preparation and large-scale integration of large-size high-quality micro optical devices on-chip possible. The method comprises coating metal on film surface, selectively removing the metal film by photolithography (such as femtosecond laser selective ablation, ultraviolet photolithography, electron beam etching, ion beam etching, and reactive ion etching), chemical mechanical polishing, chemical corrosion or over polishing and other steps. Micro-optical devices on-chip prepared by the method have extremely high surface finish and extremely low optical loss.

Abstract: High-power remote phosphor white LED heat-dissipation package relates to an LED heat-dissipation package, for solving the problem of poor heat dissipation of LED package structures. The substrate of the package structure is provided with a boss and a heat conducting ring, and the phosphor structural layer contains hollow glass microspheres. The white LED heat-dissipation package structure in the present invention improves the spatial chroma uniformity of the white light by using the hollow glass microspheres, thereby reducing the costs. The package structure can improve the heat dissipation efficiency of the chip and the utilization ratio of light emitted from the chip. The present invention is applicable to prepare high-power remote phosphor white LEDs.

Abstract: This invention involves a kind of fluorine nitride fluorescent powder and the light emitting device containing the fluorescent powder. The chemical formula of fluorescent powder is Rx(My,Euz)Ala(Sib,Gec,Mnf)NdFe. In the formula, R is selected from Li, Na and K (at least one element); M is selected from Ca, Sr, Mg and Ba (at least one element); x, y, z, a, b, c and d are the amount of substance of each component, where 0<x?0.2, 0.9?y?1.0, 0.001?z?0.1, 0.9?a?0.99, 0.8?b?1.0, 0?c?0.1, 2.5?d?3.0, 0.01?e?1.2, 0.01?f?0.1. In this invention, alkali metal, fluorine element and manganese element are introduced in the fluorescent powder at the same time. The luminous efficiency is high, and the synthetic process is simple. Its structure is same with CaAlSiN3. The fluorescent powder may be used independently or combined with other fluorescent powder to prepare the light emitting device with high performance.