11 results about "Optical detectors" patented technology

The invention provides a two-dimensional double perovskite material. The composition formula of the two-dimensional double perovskite material is AnMIIIMIX8, wherein A is organic amine; MIII is a trivalent metal element; MI is a monovalent metal element; and X is halogen. The two-dimensional double perovskite material has certain advantages of methylamine lead-iodine perovskite and lead-free double perovskite. The material is lead-free and environmentally friendly, has very good light stability and good chemical stability, and is unlikely to deteriorate in air. The material has a suitable andadjustable light absorption band gap, and more importantly can be used for preparing a film at a low temperature by a solution method. The advantages provide basis for the application of the materialin the photovoltaic fields such as solar cells, optical detectors and light-emitting diodes.

The invention discloses a device and method for detecting the optical detector working point of a particle detector. The device comprises a laser, an external modulation device, a cylindrical lens group, a sample cell, a focusing lens and an optical detector which are distributed according to preset positions, wherein the external modulation device is used to generate a detection signal and load the detection signal on the laser beam sent by the laser; and the device also comprises an oscilloscope and a processing circuit, wherein the optical detector is connected with the oscilloscope and the processing circuit through signal wires respectively to display the detection signal from the external modulation device on the oscilloscope and process the detection signal in the processing circuit. By using the device and method of the invention, the optical detector can work in a linear work area and the particle detection can be performed more accurately.

The invention relates to a multi-unit inspection full-automatic condensation point analytical method which comprises the following steps: a sample is divided into a plurality of identical detection units which are relatively independent from one another; every other one DEG C, controlled dry air is blown to the surface of the sample one detection unit is cooling; an optical detector is used to exam the movement of the surface of the sample on the detection unit; a detection system detects the next detection unit, when temperature of the sample drops by another one DEG C, the controlled dry air is once again blown to the surface of the sample; the optical detection system detects scattering light intensity of the surface of the sample prior to gas pulse and in the process of gas pulse; the work process is repeated until no obvious changes of the scattering light intensity of the surface of the sample prior to gas pulse and in the process of gas pulse, which is detected by the optical detection system take place; then an analyzer determines that the sample is completely solidified, at the moment, temperature of the sample is the solidification point. With the method of the invention adopted, the previous manual chemical laboratory analysis process is completely replaced, as a result, analysis time is shortened from 1.5-2 hours to 20-30mins; in addition, analysis accuracy is improved, repeatability is improved from previous 2 DEG C to the existing 1 DEG C, reproducibility is improved from 4 DEG C to 2 DEG C, so that work efficiency is improved and human resource is saved.

The invention discloses a refrigeration-free tunable semiconductor laser based on a multi-wavelength array. The refrigeration-free tunable semiconductor laser comprises a thermistor, a tunable laser array, a wave combining structure, an optical amplifier, an optical branching device, an optical detector and a main controller. According to the invention, when the laser is influenced by the externalenvironment temperature, the influence value caused by the external environment temperature is calculated, and the driving currents of the tunable laser array and the optical amplifier are respectively regulated and controlled according to the calculation result such that the purpose that the final output light is consistent with a theoretical light parameter is achieved. As no refrigeration equipment is adopted, the overall structure of the laser is greatly reduced, the preparation process is further simplified, and even a sealed packaging structure is not adopted such that the cost of a laser device is greatly reduced.

The invention is an optical recognizing device for recognizing papers with special use, such as paper money, comprising at least a light source, at least a light splitting device, at least two optical detectors and a picture identification circuit, where the light splitting device splits the light generated by the corresponding light source into two main beams, which are projected on the paper to be detected to form above two response pictures, and the optical detectors receive these response pictures and the picture identification circuit recognizes true or false and kinds of the papers by analyzing these response pictures.

The embodiment of the invention discloses a pair of glasses and a control method of the glasses, belonging to the technical field of wearable equipment. The glasses comprise a glasses frame, eyeglasses, an optical detector and a controller, wherein the eyeglasses, the optical detector and the controller are respectively mounted on the glasses frame, the optical detector is connected with the controller, the controller is connected with the eyeglasses, and the optical detector is used for detecting first illumination information of ambient light; and the controller is used for adjusting light transmittance performance parameters of the eyeglasses according to the first illumination information detected by the optical detector. According to the glasses, the light transmittance performance parameters of the eyeglasses are determined according to the illumination information, and a second light shielding layer is adjusted so as to increase or decrease the light transmittance, so that the automatic adjustment of the light transmittance of the glasses is realized, and the user experience is improved.

The invention provides an optical detector with a precise positioning function, and relates to the field of optical detection. The optical detector with the precise positioning function comprises a base, a shell is fixedly installed at the top of the base, a movable sliding groove is formed in the position, located on the outer side of the shell, of the top of the base, and a shading plate is rotationally installed in the movable sliding groove through a bearing. According to the optical detector with the precise positioning function, magnifying lenses with different sizes can be clamped and fixed, so that a clamp does not need to be replaced when the magnifying lenses with different sizes are clamped, and the optical detector is convenient and rapid to use, the center positions of the magnifying lenses can be kept at the same position when the magnifying lenses with different diameters and thicknesses are clamped, so that the clamping and positioning accuracy is improved, and finally, the imaging is performed through irradiation, and the imaged image is shot and stored through the acquisition camera, whether the magnifying lens is qualified or not can be determined through distribution of imaging light spots.

The invention relates to an SMT surface-mount detection device. The device comprises a base and a cover body, two supporting plates are fixedly arranged on the upper surface of the base, and a conveying belt used for conveying a PCB is arranged between the two supporting plates; the inner side of the cover body is provided with an automatic optical detector used for detecting SMT surface-mount; a removing mechanism is arranged above the conveying belt and comprises a bottom plate, the two opposite sides of the bottom plate are hinged to two supporting plates respectively, and the supporting plates are provided with driving parts for driving the bottom plate to swing; a discharging plate is fixed to the side, away from the feeding side of the conveying belt, of the bottom plate; two clamping material conveying belts are arranged above the bottom plate and are used for clamping and conveying PCBs to the discharging plate; the discharging plate is provided with a proximity switch; when the automatic optical detector detects the PCBs which do not meet the standard, the driving parts drives the bottom plate to swing until the edge of one side, away from the discharging plate, of the bottom plate is propped against the upper surface of the conveying belt; and when the proximity switch detects the PCBs, the driving parts drive the bottom plate to swing for resetting. The removing mechanism can remove the PCBs which do not meet the standard from the conveying belt.