264results about How to "Improve focusing efficiency" patented technology

A semiconductor light-emitting device and a method for manufacturing the same can include a wavelength converting layer located over at least one semiconductor light-emitting chip in order to emit various colored lights including white light. The light-emitting device can include a base board, a frame located on the base board, the chip mounted on the base board, the wavelength converting layer located between an optical plate and the chip so as to extend from the optical plate toward the chip, and a reflective material layer disposed at least between the frame and both side surfaces of the wavelength converting layer and the optical plate.

The application relates to a microscope focusing method and apparatus, a computer apparatus, and a storage medium. The method includes: collecting a coarse focusing image of a microscope; evaluating the image sharpness of the coarse focusing image; determining a coarse focusing position and a focusing adjustment direction according to the image sharpness; acquiring a fine focusing image, being animage shot by the microscope based on the coarse focusing position, of the microscope; and according to the fine focusing image, determining an optimal focusing position. According to the embodiment of the application, the optimal focusing position can be searched directly in the search range determined according to the coarse focusing position; repeated multi-focusing is avoided; the focusing time is saved; and the focusing efficiency is improved.

The invention discloses a camera image resolution estimation system which comprises a camera module, a standard image, an upper computer, a resolution estimation module and a module data collecting module. The invention further discloses an estimation method of the camera image resolution estimation system. The estimation method comprises the steps that (1) the camera module is connected with the module data collecting module; (2) the module data collecting module is provided with a camera and a camera image is read into a cache area; (3) the camera image is transmitted to a memory of the resolution estimation module from the cache area of the module data collecting module through a data line; (4) if a camera resolution estimation value is larger than a set resolution threshold, the resolution estimation module sends the signal that the focus of the camera is adjusted to the required resolution degree; (5) the resolution estimation module estimates the resolution of the image, and the user adjusts the position of a lens according to a display result. The camera image resolution estimation system has the advantages of being intelligent, high in efficiency, high in accuracy and the like.

There is provided a light-emitting module which suppresses wavelength drift. A light-emitting module according to the invention includes a stem and a cap fixed to the upper surface of the stem. A thermo-electric cooler is mounted on the stem and a base is mounted on the thermo-electric cooler. A laser diode is mounted on one side of the base. A thermistor that measures the temperature of the laser diode is mounted on another side. The other side includes an overhung portion that blocks radiant heat transmitting from the cap toward the thermistor.

The invention discloses a broadband polarization and phase control array based on a birefringent super-surface structure. The broadband polarization and phase control array comprises a substrate, a metal reflection film, a medium layer, a cross sub-wavelength optical antenna unit, a birefringent phase control super-surface structure unit and a birefringent phase control super-surface structure array. According to a reasonable design, the birefringent phase control super-surface structure unit has a birefringent effect and a phase control function, and under incident conditions of circularly polarized light, the reflected light further has polarization control and phase control functions of space sub-wavelength resolution; and with respect to the circularly polarized incident light, the birefringent phase control super-surface structure units are arranged to form a birefringent phase control super-surface structure array according to the needed space polarization and phase distributionin order to obtain a special optical field with any polarization and phase distribution. Moreover, the birefringent phase control super-surface structure unit and the birefringent phase control super-surface structure array have wide operating wavelength ranges.

The invention discloses a method and system for automatic focusing of a laser projector. The method includes S1, the laser projector projecting at least one light beam into space; S2, a collecting module collecting light spot images in real time; S3, a recognizing module recognizing the laser light spots according to second derivative of distribution of the light spot strength; S4, a computation module computing parameter values of definition of the light spot images; S5, a focusing module focusing relative relation of a light source constantly and repeating the step 1-4; S5, the focusing module comparing the parameter values acquired in real time to acquire the optimum parameter value, and focusing the light source to the optimum position according to the optimum parameter value. With the method and the system, automatic focusing of the laser projector can be realized, the problem of low precision brought by manual focusing in the prior art is solved, and meanwhile, focusing efficiency is greatly improved.

The invention relates to an auto-focus device for a visible light lens. The auto-focus device comprises an FPGA (field programmable gate array) controller, a video input circuit, a power management module, a motor driving circuit and a serial port communication circuit, wherein the FPGA controller drives a focus motor to move to the best focus position through the motor driving circuit. A focus method includes the steps: a) determining the farthest clear position and setting the position of the motor as A; b) determining the nearest clear position and setting the position of the motor as B; c) determining the whole focus course between the two points A and B; d) judging whether trigger signals are generated or not; e) moving to the nearest local end point; f) seeking a primary focus clear point; g) seeking a secondary focus clear point; h) seeking a tertiary focus clear point. According to the auto-focus device and the method, the focus mode of the maximum stroke of a focus motor in the past is avoided, focus speed is high, the focus motor successively approximates the focus position by gradually decreasing the speed and the step length of the focus motor, so that the final focus position is more accurate, and images are clearer.

The present invention provides a charged-particle beam inspection technology that enables to acquire a shadow contrast enhanced image, and to detect a shallow roughness with sufficient sensitively, which is caused by a micro-scale or nano-scale foreign matter in an inspection of a semiconductor device having a circuit pattern or the like. Immersion objective lens is employed as an objective lens for the high-resolution observation. A converged electron beam is obtained due to the objective lens. An assist electrode, a right detector and a left detector are provided in the objective lens. A velocity component of a secondary electron caused by the irradiation of the sample with an electron beam is discriminated. An azimuth component is further discriminated.

The invention relates to a focusing method and apparatus, an electronic device and a computer readable storage medium. The method comprises the steps of collecting a preview image of a shooting scene;determining a target scene type of the shooting scene according to a scene complexity feature corresponding to the preview image; and obtaining a focusing area of the preview image according to the target scene type of the shooting scene, and performing focusing based on the focusing area. According to the embodiment of the invention, the focusing area of the preview image is acquired according to the target scene type of the shooting scene, and different focusing area acquisition modes are set for the shooting scenes with different complexities, so that the focusing area can be quickly determined under the shooting scenes with different complexities, and the focusing efficiency is improved.

The invention provides automatic focusing equipment of a high-pixel module. The automatic focusing equipment comprises a working table rack, a control panel and a focusing test zone, wherein the control panel and the focusing test zone are arranged on the working table rack, and the focusing test zone is provided with focusing test stations, a focusing light source, defective-pixel light sources, CCD lenses, height sensors and a focusing hand wheel which is used for adjusting the height of the focusing light source. The focusing test stations can achieve accurate locating and control on the module through a motor, and a focusing mechanism for adjusting the focusing hand wheel is arranged on the focusing test zone. By the adoption of the automatic focusing equipment, focusing efficiency of the high-pixel module can be greatly improved, focusing consistency of products is guaranteed, and defective pixels of the module can be detected. The automatic focusing equipment is easy and convenient to operate and high in automation degree.

The invention discloses lens optical equipment and a light path transmission method based on the lens optical equipment. A collimating lens fixed on a collimating interface receives a laser beam and carries out collimating processing, the laser beam is transmitted to a first total internal reflection interface to be subjected to total internal reflection to form a total internal reflection light beam, the light beam is transmitted to a refraction and reflection interface to be subjected to reflection and refraction, a reflection light beam is transmitted to a first focusing interface perpendicular to the reflection light beam transmission direction, a first focusing lens fixed on the first focusing interface carries out focusing on the transmitted reflection light beam, the light beam is transmitted to a light detector to be detected; a refraction light beam is transmitted to a refraction adjusting interface perpendicular to the refraction light beam transmission direction to be subjected to transmission, the light beam is transmitted to a second total internal reflection interface to be subjected to total internal reflection, the light beam is transmitted to a second focusing interface; a second focusing lens fixed on the second focusing interface carries out focusing on the transmitted reflection light beam, and the light beam is transmitted to optical fibers. According to the lens optical equipment and the light path transmission method based on the lens optical equipment, optical fiber transmission efficiency can be improved, and lens optical equipment cost is lowered.

The invention is to a biomedical used multiple-channel hemispherical focused ultrasound phased array apparatus. The invention comprises of a graphic user interface, digital multiple channel phase control kernel, multiple channel driving system, and impedance matching module, power feedback device, as well as the hemispherical low-frequency ultrasound phased array. The invention also serves as a good platform reference to develop a focused ultrasound system in the assisted brain drug delivery application.

The invention relates to improvement of a decoking device for a coal-fired boiler. The decoking device is characterized in that an impact vibration coke top hitting head is composed of a valve control air cylinder or an air pick or a crank arm/connecting rod and a direct driving coke hitting drill bit and arranged at the front end of a coke hitting cross arm. Not only a power device can generate vibration force and impacting force simultaneously and exciting force is strong and powerful, but also the impact vibration coke hitting head can enter a boiler body directly and vibrates and impacts coke blocks directly at a close range. The exciting force generated through the close range of the coke blocks enables coke hitting speed to be fast and powerful, coke hitting effectiveness and reliability are greatly improved, coke hitting and removing effects are remarkably improved, and coke hitting can be operated by a single person or two people.

The present invention relates to an adaptive focusing method. A focusing depth method and a de-focusing depth method are combined for adaptive focusing. An adaptive focusing process is divided into two phases: rough focusing and fine focusing. In the rough focusing process, a current de-focusing amount of a target object is calculated firstly by means of the de-focusing depth method, the de-focusing amount serves as a reference basis to design a search step size, the search process lasts until an estimated de-focusing amount is smaller than a preset threshold, and the rough focusing process is ended. Then, the focusing depth method is adopted to enter the fine focusing process. Large-step-size search is adopted in an algorithm firstly, thereby greatly reducing the search count and improving the focusing efficiency. Moreover, a large-step-size search policy can also avoid influence of a local peak value of an evaluation function. In addition, an area close to a focusing position is focused by means of a high-precision focusing depth method, thereby ensuring the precision of the algorithm.

The invention provides an automatic focusing method and system for a light source projector. The method comprises the steps that S1 a light source projector projects at least one light beam to the space; S2 an acquisition module acquires the light spot image of the light beam; S3 according to the acquired light spot image, a calculation module calculates definition parameter values; and S4 a focusing module compares the parameter values acquired in real time to acquire the optimum parameter value, and adjusts a light source to the optimum position according to the optimum parameter value. According to the method and the system, automatic focusing of the light source projector is realized; the problem of poor precision caused by manual focusing in the prior art is overcome; and the focusing efficiency is greatly improved.