Abstract: Provided are a backlight module, a display panel and a display apparatus. The backlight module includes a back plate, including a bottom plate and a frame surrounding the bottom plate; at least one light bar, fixed on an inner sidewall of the frame, wherein a gap is formed between an end portion of the light bar and the inner sidewall of the frame in an extension direction of the light bar; and a reflector sheet, disposed in the frame and on the bottom plate, wherein at least one first sidewall of the reflector sheet is provided with at least one first protrusion, the first protrusion being extended from the first sidewall on which the first protrusion is disposed towards an inner sidewall of the frame opposite to the first sidewall on which the first protrusion is disposed, and the first protrusion being disposed in the gap.

Abstract: The present disclosure relates to the technical field of coal-fired power plant equipment, in particular to a PLC coal machine control system, including a PLC control unit, a weighing unit one, a weighing unit two, a drive unit, a frequency converter, a belt motor and a velocity measuring unit; wherein the PLC control unit is electrically connected to the weighing units one and two, for making a real-time collection of weight values of the two units; and the PLC control unit is electrically connected to the drive unit, frequency converter and velocity measuring unit, for making a real-time collection of output signals of the drive unit, velocities of the frequency converter and velocities detected by the velocity measuring unit. According to the present disclosure, the PLC controller is employed to process signals, so that the stability of the system is improved and stable operation of a generator set is guaranteed.

Abstract: Provided are a backlight module, a display panel and a display apparatus. The backlight module includes a back plate, including a bottom plate and a frame surrounding the bottom plate; at least one light bar, fixed on an inner sidewall of the frame, wherein a gap is formed between an end portion of the light bar and the inner sidewall of the frame in an extension direction of the light bar; and a reflector sheet, disposed in the frame and on the bottom plate, wherein at least one first sidewall of the reflector sheet is provided with at least one first protrusion, the first protrusion being extended from the first sidewall on which the first protrusion is disposed towards an inner sidewall of the frame opposite to the first sidewall on which the first protrusion is disposed, and the first protrusion being disposed in the gap.

Abstract: Disclosed are a backlight module and a display device. An optical film includes a main body portion and at least one fixing portion connected to the main body portion, the main body portion is fixed to a light exit surface of a light guide plate, and the fixing portion is snap-fitted to a fixing surface of the light guide plate; the fixing portion is snap-fitted to the fixing surface of the light guide plate.

Abstract: A backlight module and a displaying device. The backlight module comprises a backplane, a reflector plate and a light guide plate that are disposed in sequence, a light strip disposed on a first side of the light guide plate, and a plurality of positioning assemblies disposed at two ends of the first side of the light guide plate respectively, wherein each light guide assembly comprises a positioning element disposed on the backplane and a guide surface disposed at a corner of the first side of the light guide plate. The positioning assemblies are disposed on the first side, where the light strip is located, of the light guide plate, such that the light guide plate will be driven to move away from support members under a reactive force of the positioning elements when expanding.

Abstract: Disclosed are a backlight module and a display device. An optical film includes a main body portion and at least one fixing portion connected to the main body portion, the main body portion is fixed to a light exit surface of a light guide plate, and the fixing portion is snap-fitted to a fixing surface of the light guide plate; the fixing portion is snap-fitted to the fixing surface of the light guide plate.

Abstract: A backlight module and a displaying device. The backlight module comprises a backplane, a reflector plate and a light guide plate that are disposed in sequence, a light strip disposed on a first side of the light guide plate, and a plurality of positioning assemblies disposed at two ends of the first side of the light guide plate respectively, wherein each light guide assembly comprises a positioning element disposed on the backplane and a guide surface disposed at a corner of the first side of the light guide plate. The positioning assemblies are disposed on the first side, where the light strip is located, of the light guide plate, such that the light guide plate will be driven to move away from support members under a reactive force of the positioning elements when expanding.

Abstract: The present invention belongs to the field of optical detection devices, and specifically discloses a polarization modulator and a polarization measurement system, comprising a rotating compensator and a polarizer, in which the rotating compensator is a continuously rotating composite waveplate, the composite waveplate is composed of a plurality of single-waveplates of the same material, and the overall structure of the composite waveplate is determined by thicknesses and fast axis intersection angles of the respective single-waveplates according to the optimization design of the polarization characteristic transfer matrix of the polarization modulator. The polarization modulator of the invention has the advantages of simple structure, easy processing and a wide applicable wavelength range, and a wide-waveband polarization measurement system can be designed based on the polarization modulator, which is adapted to the requirements of wide-waveband precision polarization measurement.

Abstract: The present invention belongs to the field of optical detection devices, and specifically discloses a polarization modulator and a polarization measurement system, comprising a rotating compensator and a polarizer, in which the rotating compensator is a continuously rotating composite waveplate, the composite waveplate is composed of a plurality of single-waveplates of the same material, and the overall structure of the composite waveplate is determined by thicknesses and fast axis intersection angles of the respective single-waveplates according to the optimization design of the polarization characteristic transfer matrix of the polarization modulator. The polarization modulator of the invention has the advantages of simple structure, easy processing and a wide applicable wavelength range, and a wide-waveband polarization measurement system can be designed based on the polarization modulator, which is adapted to the requirements of wide-waveband precision polarization measurement.

Abstract: A device for measuring a large-area and massive scattered field in nanoscale. The device includes a polarization state generator disposed on an output optical path of a laser source, a polarization state analyzer operating to demodulate a polarized light beam emitted thereon, a first objective lens and a first lens disposed on an optical path of a sample stage, and a scanning mirror disposed on an optical path in front of or at the rear of the polarization state generator.

Abstract: A device for measuring a large-area and massive scattered field in nanoscale. The device includes a polarization state generator disposed on an output optical path of a laser source, a polarization state analyzer operating to demodulate a polarized light beam emitted thereon, a first objective lens and a first lens disposed on an optical path of a sample stage, and a scanning mirror disposed on an optical path in front of or at the rear of the polarization state generator.

Abstract: An alignment method for optical axes of a composite waveplate includes rotating a rotatable waveplate, which rotates about a central axis with respect to a fixed waveplate, and adjusting the rotation angle thereof until the differences between the spectral parameters of the composite waveplate and ideal spectral parameters are smaller than preset values.

Abstract: A method for extracting a critical dimension of a semiconductor nanostructure. The method includes: 1) determining a value range for each parameter to be extracted, whereby generating an electronic spectra database, and employing training spectra and support vector machine (SVM) training networks for training of SVMs; 2) employing the SVMs after training to map measured spectra to yield a corresponding electronic spectra database; and 3) employing a searching algorithm to search for an optimum simulation spectrum in the corresponding electronic spectra database, simulation parameters corresponding to the simulation spectrum being the critical dimension of the semiconductor nanostructure to be extracted.

Abstract: An alignment method for optical axes of a composite waveplate includes rotating a rotatable waveplate, which rotates about a central axis with respect to a fixed waveplate, and adjusting the rotation angle thereof until the differences between the spectral parameters of the composite waveplate and ideal spectral parameters are smaller than preset values.

Abstract: A method for extracting a critical dimension of a semiconductor nanostructure. The method includes: 1) determining a value range for each parameter to be extracted, whereby generating an electronic spectra database, and employing training spectra and support vector machine (SVM) training networks for training of SVMs; 2) employing the SVMs after training to map measured spectra to yield a corresponding electronic spectra database; and 3) employing a searching algorithm to search for an optimum simulation spectrum in the corresponding electronic spectra database, simulation parameters corresponding to the simulation spectrum being the critical dimension of the semiconductor nanostructure to be extracted.