16 results about "Plane parallel" patented technology

The application discloses a security check image acquisition method and device, a security check system and a storage medium, relates to the field of active millimeter wave human body security check technology, and can acquire high-quality millimeter wave human body security check images in real time. The method comprises the following steps: constructing target space distribution information of a target object surface contour according to distance information of a plurality of reflection points obtained by detecting the target object by using a ranging sensor; wherein the plurality of reflection points comprise points on the target object surface; determining a target amplitude value of a target position point in the target space distribution information according to echo signals obtained by detecting the target object by using a millimeter wave scanning array; the target position point is a point in a two-dimensional plane parallel to a scanning plane of the millimeter wave scanning array; the target amplitude value is used for representing scattering intensity of the target position point to electromagnetic waves emitted by the millimeter wave scanning array; and determining a two-dimensional image of the target object according to the target space distribution information and the target amplitude value.

This invention relates to the field of profile processing technology, specifically disclosing a method for cutting profiles. The method includes the following steps: determining the lengths of each side of the profile's cross-section; summing the lengths of all parallel sides to obtain the total length, defining them sequentially as a first group and a second group according to their total length; randomly selecting one side from the first group as the first side, and randomly selecting one side from the second group as the second side; determining the angle between the first and second sides as α; passing the profile through the fixed blade's fixed edge and the moving blade's moving edge; setting the first side parallel to the horizontal plane, and moving the moving blade relative to the fixed blade along a first direction to complete the cutting of the profile, wherein the angle between the first direction and the horizontal plane is half α. This method avoids deformation of the first and second sides, prevents burrs caused by deformation, avoids secondary shaping, saves costs, and helps ensure the strength and other properties of the profile.

The application provides a method and device for virtual focal point size detection of an objective lens group mounting seat, which comprises the following steps: constructing a three-dimensional orthogonal reference surface through a three-coordinate device according to the measured machining and installation reference of the objective lens group mounting seat, and establishing a Cartesian coordinate system based on the three-dimensional orthogonal reference surface; measuring three-dimensional size data of two objective lens mounting holes on the objective lens group mounting seat through the three-coordinate device, and constructing two axis lines corresponding to the two objective lens mounting holes respectively according to the three-dimensional size data; constructing a focal plane, wherein the focal plane is parallel to a Top surface in the three-dimensional orthogonal reference surface; judging whether the two intersection points formed between the two axis lines and the focal plane are located in a virtual small ball with a center being a point where the focal plane and the axis line of the Cartesian coordinate system intersect, and determining that the objective lens group mounting seat is qualified if yes. The application is helpful to use the qualified objective lens group mounting seat to an optical system.

The present application relates to a kind of thirteen degrees of freedom gear measuring device based on multiple groups of line structure light orthogonal view field, belong to the field of precision testing technology and instrument.For the problems of high angle sensitivity, low measurement efficiency and poor universality of existing gear measuring device, the device includes platform-rail unit, main and auxiliary measuring head unit and precision rotary table unit.Innovatively, double measuring head cooperative measurement is used, the main measuring head light plane is parallel to the gear axis to obtain involute information, and the auxiliary measuring head light plane is perpendicular to the axis to obtain tooth direction information, which constitutes orthogonal view field to realize data fusion and eliminate measurement blind area.The main and auxiliary measuring head unit both have six degrees of freedom pose adjustment capability, and through motor drive, the precise adjustment of X, Y, Z axis spatial position movement and rotation around three axes is realized, the thirteenth rotational freedom is provided by precision rotary table, and the closed-loop feedback system of linear grating and circular grating is further used to improve measurement accuracy and efficiency, suitable for full-parameter high-precision measurement of various gears.

A bucket information acquisition device for acquiring information regarding the shape of a bucket that rotates about a rotational center axis along a predetermined moving plane in a construction machine includes: a distance distribution acquisition unit that acquires the three-dimensional distance distribution of the bucket with respect to a reference point; a reference cross section extraction unit that extracts, from the distance distribution acquired by the distance distribution acquisition unit, a reference cross section which is a cross section of the bucket obtained by cutting the bucket along a plane parallel to the moving plane; an approximate line identification unit that identifies, based on the reference cross section, an approximate line approximating the reference cross section composed of a straight line and a curve; and a bucket shape calculation unit that calculates bucket shape information regarding the shape of the bucket based on the approximate line.

In the linear motion guide device, a plane passing through the width direction center of the slider body and the length direction axis of the guide rail is set as a perpendicular center plane (CP), a plane orthogonal to the perpendicular center plane (CP) and passing through the straight line portion center line of the rolling passage is set as a horizontal reference plane (HP), and a plane parallel to the perpendicular center plane and intersecting the chamfer portion is set as a perpendicular reference plane (VP), at this time, the surface of the chamfer portion is located on a rotation locus centered on a point (O2) in a cross section orthogonal to the straight line portion center line, the minimum radius of the rotation locus is larger than the groove bottom radius (r) of the first rail surface, and the point (O2) is a point offset from the groove bottom center (O1) of the first rail surface in a manner away from the first rail surface along the horizontal reference plane (HP).

The application relates to a camera measurement field establishment method and a target, which comprises the following steps: determining the theoretical coordinates of a measured point according to the digital model of a measured object; adjusting the size of a target mark according to an actual working distance; installing a target base on the measured point of the measured object; manually adjusting the angle of the target mark according to the image quality of the mark in the camera field of view, so that the target mark plane is parallel to the camera view plane; taking a photo to calculate the three-dimensional coordinates of the mark center point in the camera coordinate system; calculating the three-dimensional coordinates of the measured point in the camera coordinate system according to the size information of the base and the target and the conversion relationship formula of the target mark center and the measured point; repeating the above steps to record the three-dimensional coordinates of the measured point in the camera coordinate system and the known coordinates of the measured point; calculating the relationship between the measured point coordinates in the camera coordinate system and the known coordinates of the measured point by adopting an optimal fitting algorithm according to the recorded measured point coordinates, and then establishing the measurement field of the camera; and finally realizing the rapid establishment of the measurement field of the camera.

An electrophoretic mobility apparatus comprising a light source, a sample fiberoptic path along which a first source of light including a sample beam travels from the light source, a sample cell along the sample fiberoptic path that receives the first source of light, a reference fiberoptic path along which a second source of light including a reference beam travels from the light source; a lens along the reference fiberoptic path that forms a plane parallel beam from the second source of light; a modulator along the reference fiberoptic path that provides frequency control of the second source of light, a beamsplitter combines the reference beam with a fraction of light scattered from the particles and forms a coherent beam, and a detector comprising an array of photo detector elements onto which the coherent beam is incident, wherein each detector element produces time varying signals from the coherent beam.

To provide a lens device that enables 360-degree field-of-view shooting while suppressing reflections of objects other than the subject. [Solution] The lens device has first and second optical systems and a mount, the first and second optical systems each having a first optical axis, a bent optical section, and a second optical axis extending from the object side to the image side, the mount has a central axis parallel to the second optical axes of the first and second optical systems and passing through the center of the mount, the first optical system has a first nodal point which is a node between the light taken in from the first optical system and the interior of the imaging device body, the second optical system has a second nodal point which is a node between the light taken in from the second optical system and the interior of the imaging device body, the central axis intersects with a straight line including the first optical axis of the first and second optical systems, and when projected onto a plane parallel to at least one of the first optical axes of the first and second optical systems and the central axis, the mount is positioned within a triangular region connecting one of the two points where the maximum angle of view portions of the incident light beams of the first and second optical systems intersect, and the first and second nodal points.

The utility model relates to a kind of handling devices, comprising: mounting structure;Visual mechanism and suction nozzle mechanism are installed on the mounting structure;Adjusting mechanism, at least one of the suction nozzle mechanism and the visual mechanism is adjustable between the position of the adjusting mechanism and the mounting structure;The adjusting mechanism connected with the suction nozzle mechanism is used to adjust the adsorption surface of the suction nozzle mechanism and the first plane parallel;The adjusting mechanism connected with the visual mechanism is used to adjust the optical axis of the visual mechanism and the first plane vertical.In the present application, the mode of adjusting the suction nozzle mechanism and / or visual mechanism by adjusting mechanism, relative to prior art, when adjusting, suction nozzle mechanism and / or visual mechanism can be adjusted without disassembling from mounting structure, time-saving and labor-saving.

Embodiments of the present disclosure generally relate to augmented reality waveguides for augmented, virtual, and mixed reality. More specifically, embodiments described herein provide waveguides with a large field-of-view and a method of forming the same. In one embodiment, a waveguide is provided. The waveguide includes an incoupler (IC) grating. The incoupler (IC) grating includes a plurality of blazed structures disposed over a substrate. The plurality of blazed structures having a blazed surface with a slant angle relative to a plane parallel to the substrate. The waveguide further includes a metal material disposed over the plurality of blazed structures. An intermediate grating and an outcoupler (OC) grating each including a plurality of device structures. The plurality of device structures having a variable depth.

An electrophoretic mobility apparatus comprising a light source, a sample fiberoptic path along which a first source of light including a sample beam travels from the light source, a sample cell along the sample fiberoptic path that receives the first source of light, a reference fiberoptic path along which a second source of light including a reference beam travels from the light source; a lens along the reference fiberoptic path that forms a plane parallel beam from the second source of light; a modulator along the reference fiberoptic path that provides frequency control of the second source of light, a beamsplitter combines the reference beam with a fraction of light scattered from the particles and forms a coherent beam, and a detector comprising an array of photo detector elements onto which the coherent beam is incident, wherein each detector element produces time varying signals from the coherent beam.

A display device includes a display panel and a light-emission board including a base substrate and light-emission units, and a maximum size of the light-emission unit in a direction parallel to the base substrate is not greater than 3 mm; connecting lines of centers of four immediately adjacent light-emission units define a quadrangle; a connecting line of centers of two light-emission units that define the quadrangle and have a largest distance therebetween passes through two first points in edges, close to each other, of the two light-emission units; a distance between the two first points is a first distance D1; an included angle between an outermost light ray of light rays emitted by the light-emission unit and a plane parallel to the base substrate is θ; and a minimum distance between surfaces, close to each other, of the display panel and the base substrate is not less than D1*tanθ / 2.

The application discloses a kind of hanging column mounting bolt pull-out test device and its using method, belong to tunnel construction technical field.It includes: general frame, rotating mechanism, XY horizontal displacement mechanism, swing mechanism, feed mechanism, pull-out mechanism, control system, the three-dimensional space position of the feed mechanism adjustable pull-out mechanism;XY horizontal displacement mechanism is not limited in the moving direction on the plane parallel with the base of rotating mechanism;The end face formed in the top of general frame is adapted with the inner wall arc surface of tunnel.The application solves the limitation that pull-out device can only work in plane, realizes the pull-out work on the inner arc structure surface of tunnel, can simultaneously carry out batch testing to multiple bolts, and is suitable for the distribution working condition of multiple bolts, improves the efficiency of tunnel installation bolt pull-out test, high flexibility, wider application range, improves the safety of tunnel construction.

Embodiments of the present disclosure generally relate to augmented reality waveguides for augmented, virtual, and mixed reality. More specifically, embodiments described herein provide waveguides with a large field-of-view and a method of forming the same. In one embodiment, a waveguide is provided. The waveguide includes an incoupler (IC) grating. The incoupler (IC) grating includes a plurality of blazed structures disposed over a substrate. The plurality of blazed structures having a blazed surface with a slant angle relative to a plane parallel to the substrate. The waveguide further includes a metal material disposed over the plurality of blazed structures. An intermediate grating and an outcoupler (OC) grating each including a plurality of device structures. The plurality of device structures having a variable depth.

This system provides a stage system and a stage calibration method that can acquire and correct the amount of correction for the direction of rotation that occurs due to movement in a plane parallel to the direction of stage movement. [Solution] This stage system 100 is configured to perform the following actions at multiple moving points of the stage 1: control to acquire the coordinates of two calibration marks M, one mark M1 and the other mark M2, which are two of the multiple calibration marks M, for each movement; and control to acquire a θ correction amount to correct for the rotation angle deviation on a plane parallel to the mounting surface 11, based on the acquired coordinates of one mark M1, the other coordinate C1, and the other coordinate C2, which are the coordinates of the other mark M2, and the ideal coordinates when no deviation occurs due to the movement of the stage.