92results about How to "Stable focus" patented technology

Digital cameras with triangulation auto focus systems include a spot beam emitter than can be used to project a spot onto a subject that is captured in an image and used to electronically automatically determine a subject to camera distance.

The invention belongs to the technical field of war game deduction, and discloses a novel emergency computer war game deduction system and method. A data service layer is used for providing various persistent data and access support services for a model support layer; a model support layer is used for simulating data for a deduction engine; the deduction engine is used for packaging the core logicof the system and providing a deduction service for the deduction process; the application layer provides service information for the user side; and the user side interacts the information provided by the application layer. Aiming at a specific chess piece model, the chess piece model can be formed by combining basic models, a data and expansibility basis is provided for a war game chess system,and the system adopts metadata to describe the basic models to simplify model construction and expansion; the data service can be used for providing access support for various persistent data of the system; a supporting means is provided for armed police forces to carry out novel combat training means research; and an open armed police war game deduction platform is provided.

An apparatus and method for forming and controlling a pattern for spraying surfaces with a fluid uses a rotary atomizer spray head having an air shaping ring with shaping air nozzles inclined in a direction of rotation of a bell cup to direct the air onto the cup surface near the cup edge. The air shape ring optimizes the shape air control to create a stable, focused pattern that minimizes robot speed while maintaining high transfer efficiency. Nozzles extending parallel to the axis of rotation of the bell cup can be provided. Selection of the shaping air flow rate produces broad, collapsed and tubular spraying patterns.

The invention discloses an automatic focusing method of an infrared imaging system. The automatic focusing method includes the steps of judging whether the focusing operation is needed or not, calculating the image stretching coefficient and selecting a focusing window if the focusing operation is needed, then obtaining infrared image data, conducting gray stretching on the infrared image data through the calculated image stretching coefficient, saving data after the gray stretching is carried out on the data in the focusing window in a focusing window matrix, using the focusing window matrix to calculate evaluation function values, judging whether the current focusing position is the best focusing position or not according to the evaluation function values, finishing the focusing process if the current focusing position is the best focusing position, otherwise adjusting a lens and executing the steps again. The automatic focusing method of the infrared imaging system gives considerations to characteristics of infrared imaging system imaging and automatic focusing, overcomes the shortcoming of the infrared image low signal-to-noise ratio, and is stable in focusing process and high in work efficiency.

An AF apparatus for a microscope (1) of the present invention includes: an observational optical system (6) which radiates light on an object under inspection (3) via one of multiple interchangeable objective lens (2) and which has a CCD (imaging device) (5) for observing reflected light from the object under inspection (3); a light flooding portion (7) which radiates a laser (non-visible light) on the object under inspection (3) via the objective lens (2) of the observational optical system (6); a focal point detection optical system (10) which has a photo-detector (photo-electric conversion portion) (8) that is arranged at an image surface of a light figure of the reflected laser from the object under inspection and that outputs signals corresponding to the position of the light figure inside the image surface, and which detects the relative distance between the objective lens (2) and the object under inspection (3); an object position adjusting unit (11) which adjusts the focal position of the object under inspection (3) based on the output signals from the focal point detection optical system (10); and a diaphragm unit (12) which adjust the area on which the laser is radiated so as to be inside the imaging area of the CCD (5).

Digital cameras with triangulation auto focus systems include a spot beam emitter than can be used to project a spot onto a subject that is captured in an image and used to electronically automatically determine a subject to camera distance.

The invention discloses a focusing triggering method and a focusing triggering system capable of intelligently selecting a focusing mode. The method comprises the steps as follows: setting weight of each focusing mode of a shooting terminal and a focusing detection mechanism corresponding to each focusing mode, respectively executing focusing detection according to the focusing detection mechanism corresponding to each focusing mode, and respectively judging whether to trigger the corresponding focusing mode according to the detection result of each focusing detection mechanism; submitting a focusing application if the corresponding focusing mode is triggered, otherwise not submitting the focusing application; checking the submitted focusing application according to the weight of each focusing mode, and using the focusing application with the highest weight as the current focusing mode to focus so as to intelligently and orderly select the focusing and prevent the diversification of automatic focusing modes to interfere each other. The focusing application and the focusing detection of the focusing mode whose weight is lower than that of the current focusing mode are stopped in the focusing process to save system resources.

The invention discloses automatic calibration equipment for the light intensity of a DLP (Digital Light Processing) printing equipment projector. The automatic calibration equipment comprises a base; the base is provided with a first cylindrical linear guide rail which moves along the X-axis direction, a first sliding platform, a second cylindrical linear guide rail which moves along the Y-axis direction, a second sliding platform, a mounting platform, a third cylindrical linear guide rail which moves along the Z-axis direction and a third sliding platform in sequence from bottom to top; an extending platform is arranged at a side edge of the base in front of the third sliding platform; the third sliding platform and the extending platform are provided with a projector and a light intensity sensor respectively; the projector and the light intensity sensor are connected with a system control board; a calibration method comprises the following steps: step (1) focusing and adjusting; step (2) determining calibration reference light intensity; step (3) collecting compensation mask gray level numerical value of the projector; step (4) generating a compensation mask; step (5) carrying out calibration. The automatic calibration equipment provided by the invention is reasonable in design, compact in structure, convenient to operate and good in stability and can effectively obtain the light intensity of the projector.

An image pickup apparatus which is capable of performing stable and high-speed focusing on an object intended by a photographer. In a video camera as the image pickup apparatus, an image pickup element picks up an object image formed by a photographic optical system including a focus lens and thereby outputs a video signal. A face-detecting section detects a face detection area based on the video signal. An AF signal processing circuit generates an AF evaluation value signal. An external ranging unit generates object distance information. A microcomputer performs a TV-AF process using an AF evaluation value of the AF evaluation value signal and an external ranging AF process using the object distance information. The microcomputer controls execution of the two focus control processes according to a result of the detection by the face-detecting section.

Devices are provided for separating and focusing charged analytes, comprising a separation chamber and two or more electrodes, for example, an electrode array. A membrane separates the separation chamber and the electrodes. The separation chamber of the device is configured, that is, the separation chamber has a shaped geometry, which serves to induce a gradient in an electric field generated by the electrodes in the electrode chamber. Optionally, molecular sieve is included in the separation chamber that is operative to shift the location at which a stationary focused band of a charged analyte forms under a given set of focusing process parameters. Methods are provided for separating and focusing charged analytes comprising introducing a first fluid comprising at least one charged analyte into the separation chamber of a device as just described, applying an electric field gradient to the charged analyte to focus the charged analyte in the electric field gradient.

Digital cameras with triangulation auto focus systems include a spot beam emitter than can be used to project a spot onto a subject that is captured in an image and used to electronically automatically determine a subject to camera distance.

It is to provide an information recording medium having a visual information recording layer which is a high sensitive visual information recording layer capable of recording at a relatively low temperature without having a heat effect on an electronic information recording medium and which is excellent also in durability of the display record. An information recording medium having at least a visual information recording layer for recording visual information and a substrate, characterized in that the visual information recording layer contains organic matter particles having a melting point of at least 50° C. and at most 180° C. and an average particle size of at least 0.5 μm and at most 2.0 μm, and is capable of recording by heating or irradiation with light without substantial chemical change of the organic matter particles.

The invention provides an optical check device capable of preventing distortion caused by bending, nutation etc. of the checking objects. The optical check device of the invention comprises: an object state for placing the checking object; an imaging unit for imaging the checking object placed on the object state; a light unit for lightening the checking object; and a rolling component for supporting the edge of the area imaging by the imaging unit and keeping flatness of the imaging area.

An optical disk apparatus has a first optical system having an objective lens with a first NA, a second optical system having an objective lens with a second NA lower than the first NA, an addition mechanism for adding focus error signals detected by the first and second optical systems, and an alignment mechanism for aligning the objective lens in accordance with the addition result of the addition mechanism.

Devices are provided for separating and focusing analytes, comprising a separation chamber and electrodes separated from the separation chamber by a membrane. The electrodes are operative to generate an electric field in the separation chamber. Molecular sieve in the separation chamber is operative to shift the location at which a stationary focused band of the analyte forms under a given set of focusing process parameters. Methods are provided for separating and focusing charged analytes, comprising introducing a first fluid comprising at least one charged analyte into the separation chamber of a device as just described, applying an electric field gradient to the separation chamber to focus the charged analyte at a location in the separation chamber. Methods are provided for separating and focusing un-charged (including inadequately charged) analytes, comprising introducing a fluid comprising at least the uncharged analyte and lipids, micelles and / or vesicles into the separation chamber of a device as just described, and applying an electric field gradient to the separation chamber to focus the analyte (in association with the lipids, micelles and / or vesicles) at a location in the separation chamber.

An optical system of a stereo video endoscope with lateral viewing direction. The optical system including: a sideways looking distal optical assembly; and a proximal optical assembly. Where the distal optical assembly includes, successively in a direction of light incidence on a common optical axis: an entrance lens configured as a raised negative meniscus, an optical deflection unit; and an exit lens configured as a hollow positive meniscus, Where the distal optical assembly has, at least in sections, a right and a left lens system channel of identical type and arranged parallel to one another, each of the right and left lens system channel having: a dedicated optical axis, and at least one first lens and an achromatic lens group in the direction of light incidence.

The invention provides a hoisting clamp for speed changer assembly, belonging to the technical field of mechanical engineering, and aims to solve the problems of high labor intensity for moving a combined piece, relatively low precision for matching the combined piece and a shell and low assembly efficiency caused by large weight of a shaft system and shifting fork assembly combined piece in the conventional speed changer assembly. The hoisting clamp for speed changer assembly comprises a positioning board, wherein a plurality of shifting fork positioning pieces for positioning a shifting fork assembly are fixedly connected to a board surface of the positioning board; a plurality of shaft system positioning components for fixing a shaft system are arranged on the positioning board; and a hoisting ring is fixedly connected to the other board surface of the positioning board. The hoisting clamp for speed changer assembly and a hoisting tool are used for hoisting workpieces, so that a phenomenon of mutual displacement of accessories during transportation is avoided; and the hoisting clamp for speed changer assembly has the advantages of firm connection, stable force application and transportation, labor saving and the like. The process of assembling the combined piece and the shell can be adjusted immediately, so that the assembly quality of a product can be guaranteed effectively.

An image pickup apparatus capable of focusing on an object with stability based on a recognized object area. A video camera includes an image pickup device for picking up an image formed by an image-pickup optical system including a focus lens, a face detection processing circuit for detecting, based on a video signal output from the image pickup device, an object area on an imaging screen and the likelihood of an object being present in the object area, and a computer for controlling a focus adjustment based on the object area when determining that the likelihood detected by the face detection processing circuit satisfies a predetermined condition, which is varied according to an imaging state.

The invention provides a focusing structure, a lens module and a camera module provided with the lens module. The focusing structure comprises a base, a movable part, magnets and coils located at the edge of the base. The movable part comprises a movable sheet and a plurality of balls. The middle of the movable sheet is provided with a mounting hole. At least two siding rods are arranged on the peripheral edge of the movable sheet in a spaced mode. The sliding rods are perpendicular to the movable sheet. The base is provided with sliding grooves corresponding to the sliding rods. The inner walls of the sliding grooves are provided with rolling grooves in a concaved mode. The balls are sequentially arranged in the rolling grooves and form rolling surfaces protruding out of the rolling grooves. A focusing lens is contained and fixed into the mounting hole. The magnets are arranged on the movable sheet and surround the mounting hole. The movable sheet is contained in the base. The sliding rods are mounted in the sliding grooves in a sliding mode and abut against the rolling surfaces. The movable sheet is located in the base through frictional force between the sliding rods and the balls. The coils are opposite to the magnets. The invention further provides the lens module and the camera module which are provided with the focusing structure.

An object of the present invention is to realize stable focus entry control even in the case where a wideband focus error signal is used with which the focus error signal sensitivity and the level in the vicinity of a focus point vary depending on a light path length. In order to achieve the object, the present invention uses a second focus error signal having a wide range, causing an objective lens to approach a disk while maintaining a predetermined rate of change with respect to time, and, during approach, a transition to focus servo is performed by detecting the focus position according to the first focus error signal.

The invention discloses an automatic focusing device. The device comprises a lens, a lens drive component, a first control module and a second control module. The first control module is applicable for obtaining a first frequency response result of pixels of an original image in a first mode and outputting a noise reduction image based on the first frequency response result of a passband part. The second control module is applicable for extracting a space domain edge operator at an interested image position of the noise reduction image, correspondingly multiplying the space domain edge operator and the pixel values at the interested image position according to edge directions and summing, thus obtaining a space domain result. The first control module is also applicable for obtaining a second frequency response result of interested pixels of the original image in a second mode. The lens drive component is applicable for taking the lens position when an expected space domain result / the second frequency response result is realized, as a focusing position, thus driving the lens. According to the device, under the conditions of low contrast textures and weak light, the focusing accuracy and the focusing speed of a photographed object are improved.

The invention provides a combined type deep purification device for desulfurized wet flue gas. The device comprises a venturi negative absorption demisting layer, an efficient demisting layer, a condensation demisting layer and a hyperfine demisting layer from bottom to top, wherein a cross beam I is arranged between the vacuum negative absorption demisting layer and the efficient demisting layer; hanging plates I are arranged at left and right ends of the cross beam I; support square steel I is arranged at the lower ends of the hanging plates I; a collecting tank is arranged in the middle of the support square steel I; the vacuum negative absorption demisting layer is provided with venturi blades; the efficient demisting layer is provided with efficient demisting layer blades; a cross beam II is arranged between the condensation demisting layer and the hyperfine demisting layer; the condensation demisting layer is provided with condensation demisting layer blades; the hyperfine demisting layer is provided with hyperfine demisting layer blades; and support plates are arranged at left and right ends of the cross beam II. The combined type deep purification device for desulfurized wet flue gas provided by the invention is favorable in purification effect and reliable in operation.

A focusing apparatus includes a determination unit configured to determine whether an object is a moving object, and a focusing unit configured to perform focusing using information on driving of the focus lens generated based on the focus detecting signal in response to an operation of an operation unit. The determination unit determines whether the object is the moving object, using a first threshold before the operation of the operation unit, and using a second threshold different from the first threshold after the operation of the operation unit. The focusing unit performs first focusing that continuously performs the focusing when the determination unit determines that the object is the moving object before the operation of the operation unit, and performs the first focusing when the determination unit determines that the object is the moving object after performing second focusing that performs the focusing once.

An optical disc apparatus has: a spherical aberration correction unit (7) which corrects the spherical aberration generated in a light spot on a recording layer; a control unit (52) which focuses a light beam on a predetermined recording layer, and shifts the focal point position of the light beam from the current recording layer to another recording layer; and a focus jump control unit (60) which controls correction of spherical aberration and shift of the focal point position based on the interlayer distance between the current recording layer and a recording layer which adjoins in a direction opposite to a direction of shifting the focal point position of the light beam. By this configuration, focus jump is stably executed.