808 results about "Surface type" patented technology

The invention relates to a small and light wide-field free-form surface prism HMD optical system, which belongs to the field of optical system and device design and is applied to the virtual reality and augmented reality field. The invention comprises a free-form surface prism with three optical surfaces, and a micro-image display; the free-form surface prism is made of plastic glass materials with the refractive index greater than 1; the three free-form optical surfaces are concave surfaces, which meet one of the three surface-type equations, and the location relationship of each surface meets three condition equations; the incident angle formed between the widest-field upper edge rays emitted by an LCD and the second free-form surface meets the total reflection conditions; and an image source element is an LCD of 0.61 or 0.59 inches. The small and light wide-field free-form surface prism HMD optical system is light and compact and has the advantages of good aberration correction and high light energy utilization rate; the optical system enables the observer to see clear images in a wide field of view, and the displayed images do not have apparent brightness attenuation and can not easily cause visual fatigue to the observer.

The invention provides an automatic graphical interaction-typed numerical control (NC) turning programming method and system used for improving programming efficiency and NC code quality, prompting quick product process realization (RPPR) and integrated product process development (IPPD). The technical proposal of the invention is that the automatic graphical interaction-typed numerical control turning programming method is characterized in that the method comprises the steps of: reading in blank and part drawing, removing redundant information, and judging whether the graphics are exact; leading the graphics to have real-time interaction function and be capable of correcting the information of the part processing surface, including processing surface type, exact geometrical information and surface roughness; determining whether to execute the corresponding system function modules by carrying out automatic programming or auxiliary programming or mixed programming according to the selection of the user. The automatic graphical interaction-typed numerical control turning control system is characterized in that the automatic graphical interaction-typed NC turning control system comprises a CAD data reading-in module which is respectively connected with an automatic programming module, an auxiliary programming module and a mixed programming module which are respectively connected with an automatic track layout module which is connected with an NC code generation module.

A device for determining the properties of reflective bodies has at least one illuminator that emits light onto a measurement surface, at least one detector for recording the light reflected from the measurement surface, the at least one detector includes a plurality of light-sensitive sensors. Substantially each sensor issues a measurement value characteristic of the light received by each respective sensor. Also included is at least one memory, having at least one first predefined threshold, at least one controller for the measurement sequence which includes at least one processor, whereby a measurement sequence is controllable such that a measurement value of a sensor is allocated to a first surface type when same exceeds the first threshold, wherein at least two sensors are respectively associated with different locations to be measured on the measurement surface, and wherein the controller is configured to issue at least one surface characteristic statistical parameter.

The invention discloses a light-weight holographic road traffic state visual inspection device comprising visual sensors installed at measuring points in each road on a road network, and a microprocessor for analyzing and evaluating the road traffic state according to video image data of the visual sensors. According to the invention, a point replacing surface type video image detection method is adopted to reduce spatial redundancy; an accurate background update strategy based on sampling points is adopted to realize a light-weight, accurate and efficient background update method; and at the same time, the detection of road traffic jam and the detection of various of traffic basic parameters can be completed.

The invention relates to a milling, grinding and polishing device based on an intelligent numerically-controlled platform, belonging to the technical field of modern optical processing. The device comprises an industrial robot, a control module, a driving module, a human-computer interaction interface, a working component, a polishing and cooling liquid cyclic control system and a sucker clamp, wherein the control module and the driving module control and drive the spatial movement and spatial positioning of the industrial robot, thereby controlling the working state of the working component, namely a grinding/polishing module; the control module also controls the human-computer interaction interface and simultaneously controls a stirring device, a temperature control device and a conveying device of the polishing and cooling liquid cyclic control system; and the sucker clamp is used for clamping a workpiece to be processed. The device of the invention has low manufacturing cost, large processing caliber and wide processed surface types, and two functions of grinding and polishing can be realized by replacing grinding heads.

The invention belongs to the technical field of optical microscopic imaging and optical precision measurement and relates to a super-resolution differential con-focal microscope with both macro field coverage observation and micro field coverage observation. The invention mainly comprises a laser (1), a beam expander (2), a spectroscope (4), a polarization spectroscope (5), a range extension tracking and measuring system (6), a measuring objective lens (7), two optical collectors (16) and (19), pinholes (17) and (20), detectors (18) and (21), an LED light emitting diode (12) which is arranged in a direction opposite to the reflection direction of the spectroscope and a CCD detector (11) which is arranged in a direction opposite to the reflection direction of a spectroscope (9). The LED light emitting diode and the CCD detector are used for realizing macro-field coverage observation of a con-focal microscope through imaging the surface type of the detected samples, and the axial resolution power of the con-focal microscope can be raised through deploying the optical path of the differential con-focal microscope.

At least one image captured from a printed document and at least one image captured from a display surface other than a printed document are processed. A surface-type-identification module accepts as input both types of images and identifies, for a particular image, the type of surface from which the image was captured. A display-surface-preprocessing module preprocesses the at least one embedded-interaction-code image captured from a display surface other than a printed document. A printed-document-preprocessing module preprocesses the at least one embedded-interaction-code images captured from a printed document. An embedded-interaction-code-processing module outputs location information for at least one of the at least one image captured from a printed document and the at least one image captured from a display surface other than a printed document.

The invention relates to a method for preparing a micro optical element on a quartz glass substrate by applying femto-second laser, which is characterized by comprising three steps of femto-second laser irradiation, chemical etching and hydrogen-oxygen flame polishing. The method can achieve processing of any surface types including a plane, a standard spherical surface, a non-spherical surface and the like; and the step of the hydrogen-oxygen flame polishing only has a generated product of water, thus the method is environment-friendly, has quick polishing, avoids physical contacts and chemical reactions at the same time, and solves the difficulty which cannot be solved by a common polishing wheel because the high temperature of the flame can repair lattice damages caused by micro-machining.

The invention relates to a broad-band high-gain scannable panel antenna of parabolic reflection surface feeding. A radiation unit is a step-type variable inclination continuous transverse stub groove (VICTS). A feeding network comprises a series connection feeding structure and a parabolic reflection surface feeding network. An electromagnetic wave is reflected into a plane wave through the parabolic reflection surface type feeding network, is coupled to an upper-layer series connection feeding network and finally is radiated to a free space through the VICTS. Through relative rotation between upper and lower layers of a parallel plate waveguide, wave beam scanning is realized. The antenna of the invention covers a satellite communication ku wave band, an antenna work frequency is 10.2GHz-14.8GHz and an impedance bandwidth reaches 36.8%. At a 13GHz frequency point, a 25.7dBi gain is possessed. A antenna scanning angle scope is from 0 DEG to 56 DEG. Compared to a traditional communication in moving system antenna, by using the antenna of the invention, the feeding is simple; wave beam scanning is easy to realize; a dynamic response is fast and is in a panel shape; and a large engineering application prospect is possessed.

The invention discloses a large field-of-view bionic compound eye visual system adopting a dome light cone. The system comprises a curved surface compound eye lens, an aperture diaphragm, the light cone and an image detector, which are connected with one another in sequence; the curved surface compound eye lens comprises sub eyes and a substrate, the sub eyes are hermetically bonded in the hexagonal array mode, the surface type of the sub eyes are non-spherical, the substrate is a curved surface substrate, the aperture diaphragm is a stepped type aperture diaphragm, and the light cone is a dome light cone. According to the invention, the dome light cone coupling strategy is used as the light path conduction mode, on one hand, a curved image formed by the compound eye lens is converted into a planar image, so as to be received by a plane detector, on the other hand, the large field of view image formed by the compound eye lens is compressed into a smaller image according to an equal ratio, so that the large field of view image can be completely imaged in a small-sized detector in a lossless mode, the coupling is realized, and the technical requirements on the size of detectors are accordingly reduced.

The invention relates to an efficient constant-pressure-difference intermittent rotation extrusion abrasive flow polishing method and belongs to the technical field of automatic polishing of large-size complex-curved-surface type part intermittent rotation extrusion abrasive flows which are high in surface quality uniformity requirement. The method comprises that a gear is driven by a hydraulic motor to be meshed with a negative-clearance rotation disc bearing to perform rotation grinding polishing, seal rings are arranged at all connected faces to achieve high-pressure abrasive static seal, easily abrasive seal rings are arranged at the rotation friction positions special high-pressure abrasive seal rings and high-pressure abrasive seals are arranged at the piston abrasive extrusion positions to achieve high-pressure abrasive dynamic seal, and finally, high-pressure abrasive intermittent rotation grinding and polishing are achieved. The 'over-polishing' and 'rounding' phenomena of traditional abrasive flow extrusion are prevented, efficient precise uniform polishing of complex curved surfaces of impellers, blades and the like high in pneumatic performance and surface uniformity is achieved, and the surface roughness Ra of various complex parts can be reduced below 0.8.

An automated wheelchair for moving over a contact surface. The automated wheelchair includes an operator chair for seating the wheelchair operator, a control computer, an operator input device for transmitting operator inputs to the control computer, and two wheelchair wheels for propelling the wheelchair. Each wheelchair wheel includes extendable and retractable spokes. The extension and retraction of each spoke is controlled by a motor. At the ends of each spoke are contact sensor devices. The control computer is programmed to receive inputs transmitted from the contact sensor devices to generate a terrain profile. The control computer generates and sends control signals to each spoke motor in response to the operator inputs and in response to the terrain profile generated by the contact sensor devices. In a preferred embodiment the contact sensor devices are pressure sensor devices. Also in a preferred embodiment, rotatable pneumatic wheels are attached to both ends of each spoke. Preferably, a brake is applied to at least one pneumatic wheel per wheelchair wheel while the wheelchair is moving over the contact surface. Preferably, the automated wheelchair is capable of moving over a variety of contact surface types, including: a set of stairs with uniform rise to run ratio, a set of stairs with non-uniform rise to run ratio, a set of straight stairs, a set of curved stairs, over a curb or over rough terrain.

Embodiments of the invention provide a home management system and method with a 360-degree virtual surface rendering application. Embodiments of the invention generate a listing of home improvement projects from the inspection report to be viewed through a user interface. Homeowners may manage, prioritize, rank, and educate themselves on each listed home improvement project. Embodiments of the invention may contain a 360-degree virtual surface rendering application allowing a homeowner to select different surface types for a room, and then view them on a re-rendered image of the room before purchasing the new surfaces.

A surface optical apparatus that includes a surface optical device with p-side and n-side electrodes, such as a surface emitting laser, a first substrate for supporting the surface optical device directly or through an elastic supporter formed of one or plural layers, and a first electrode wiring of at least a wire formed on the first substrate and electrically connected to one of the electrodes. A current is injected into or a voltage is applied across the surface optical device through the first electrode wiring and the p-side and n-side electrodes. A photodetector for detecting light from the surface optical device may also be arranged in the vicinity of the optical device.

A tire-based system and method for estimating road surface friction includes a model-based longitudinal stiffness estimation generator using tire-based parameter inputs and vehicle-based parameter inputs; an actual longitudinal stiffness estimation generator using real-time vehicle-based parameter inputs; and a tire road friction estimation generator for deriving a tire road friction estimation from a comparative analysis between the actual longitudinal stiffness estimation and the model-based longitudinal stiffness estimation. A road surface classifier algorithm is employed to generate a road surface type analysis from the road friction estimation, an ambient air temperature measurement, and an ambient air moisture measurement.

An exhaust gas post treatment system for nitrogen oxide and particle reduction of internal combustion engines operated with excess air, comprising a particle filter disposed in the exhaust gas stream of the internal combustion engine. The particle filter is a surface-type particle filter or a deep bed filter, and is charged on an outlet side with an SCR-active catalyst material for reducing nitrogen oxides. Ammonia or an ammonia-releasing reduction agent is supplied to the exhaust gas stream upstream of the particle filter.

A technology for machining the non-spherical optical element with monocrystal of Ge features use of numerally controlled lathe and arc diamond cutter. Its technological steps include blanking, coarse grinding, designing and manufacturing attractive fixture, semi-fine machining, fine machining, testing surface type, and trimming. It has high productivity.

The invention relates to a surface-type millimeter wave scanning three-dimensional holographic imaging safety check system which comprises a millimeter wave signal emission driving module, a millimeter wave signal acquisition module, a millimeter wave signal processing module, a millimeter wave emission antenna and a millimeter wave reception antenna. The millimeter wave emission antenna and the millimeter wave reception antenna form a surface-type millimeter wave antenna array, wherein the surface-type millimeter wave antenna array is used for scanning a region to be detected; the millimeter wave emission antenna is connected with the millimeter wave signal emission driving module; the millimeter wave reception antenna is connected with the millimeter wave signal acquisition module; and the millimeter wave signal processing module is connected with the millimeter wave signal acquisition module. According to the surface-type millimeter wave scanning three-dimensional holographic imaging safety check system, through the surface-type millimeter wave antenna array, single scanning time is greatly reduced; and meanwhile, since equipment does need to be subjected to mechanical rotation, equipment wearing is not easy to cause, service time of the equipment is substantially prolonged and equipment fault is reduced.

An equipment for shielding separating and exhausting smoke dust is composed of supporting frame, negative-pressure wind ring generator including a major arc-shaped wind inlet, and positive-pressure wind generator including a minor and arc-shaped wine inlet. The wind guide pipe, blower and exhaust pipe are connected with the said wind inlet. Its advantags are high effect, low noise, and compact structure.