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533 results about "Light pillar" patented technology

A light pillar is an atmospheric optical phenomenon in which a vertical beam of light appears to extend above and/or below a light source. The effect is created by the reflection of light from tiny ice crystals that are suspended in the atmosphere or that comprise high-altitude clouds (e.g. cirrostratus or cirrus clouds). If the light comes from the Sun (usually when it is near or even below the horizon), the phenomenon is called a sun pillar or solar pillar. Light pillars can also be caused by the Moon or terrestrial sources, such as streetlights.

Ultraviolet curing equipment and method for optical fiber coating

The invention relates to ultraviolet curing equipment and method for an optical fiber coating. The equipment comprises a cylindrical mounting base, wherein an inner cavity of the cylindrical mounting base is provided with UVLED (Ultraviolet Light Emitting Diode) light source modules in a peripheral direction and an axial direction; a cylindrical focusing lens is arranged in front of light-emitting surfaces of the UVLED light source modules, so that ultraviolet rays emitted from the UVLED light source modules are focused on a same curing axis. The ultraviolet curing equipment disclosed by the invention is long in service life, small in heating amount and low in energy consumption; a layout space of light sources is large, so that the output of the UV light sources of a plurality of UVLED light source modules are focused on the curing axis to form a UV light column with high light intensity; an optical fiber absorbs UV and is cured when passing through the UV light column; the light strength of the light column is high and the light sources are from multiple directions, so that the equipment has higher curing efficiency and better curing uniformity, the curing time is shortened, the work efficiency of wiredrawing of the optical fiber is improved, and the curing quality of the coating is improved.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD

Light-emitting diode (LED) bulb

A light-emitting diode (LED) bulb comprises a light-permeable bulb shell, an LED luminous source, a stem, a driver and an electric connector, wherein the stem is provided with a support pillar, a horn tube, an exhaust tube and electric lead wires; the bulb shell and the stem are sealed in a vacuum mode, and low-viscosity high-thermal-conductivity gas is filled in the bulb shell; the LED luminous source is composed of at least one transparent LED light-emitting column; the LED light-emitting column comprises a high-thermal-conductivity transparent tube inserted in the outer surface of the support pillar; at least one string of LED chips and a luminescent powder layer are arranged on the surface of the transparent tube; the chips are in series connection or in series-parallel connection, electric lead wires of chip electrodes are connected with the electric lead wires of the stem, a stem electrical connection wire is connected with the output end of the driver, the input end of the driver is connected with the electric connector, and the electric connector is communicated with an external alternating current (AC) or direct current (DC) power supply. The LED bulb has the advantages that thermal resistance between the LED chips and the heat dissipation gas is low, heat dissipation effect is good, an LED bulb with higher luminous flux and higher luminous efficiency can be manufactured, the light-emitting component is firmly fixed, can withstand strong shock, and is high in reliability, and the LED bulb is simple in manufacturing process and low in cost.
Owner:ZHEJIANG LEDISON OPTOELECTRONICS

Robot positioning method and device and electronic equipment

The application relates to a robot positioning method and device and electronic equipment. The method comprises the steps: determining a first residual item through matching of a laser point cloud anda grid map through the obtaining of the laser point cloud and the grid map of a robot; determining a detection position of a reflective column according to the laser point cloud, and matching the detection position with the calibration position of the reflective column to determine a second residual term; determining the maximum and minimum values of the first residual term and the maximum and minimum values of the second residual term by using nonlinear optimization; determining a frame pose of laser equipment according to the maximum and minimum values; and determining the pose of the robotaccording to the frame pose. Therefore, a problem that the pose precision of the robot obtained after fusion is low when the deviation of observation information or prediction information is large due to the fact that filtering fusion is conducted on the pose matched with the contour and the pose matched with the light reflection column based on a filtering mode is solved, and the positioning precision of the robot is improved.
Owner:ゼジャンハーレイテクノロジーカンパニーリミテッド

A seamless splicing display device and a seamless splicing method thereof

ActiveCN102270411AEliminate stitching gapsRealize the trapezoidal magnifying glass effectIdentification meansLight guideMagnifying glass
The invention discloses a seamless splicing display screen device and a seamless splicing method thereof. The device comprises a transparent box and conical light guide pillars; the box has a trapezoid structure and a small end of the box is arranged on a display panel; a plurality of installation holes which are matched with the light guide pillars are formed in the box along the direction vertical to the display panel; two end faces of each light guide pillar are polished surfaces; and the light guide pillars are arranged in the installation holes and the cone directions of the light guide pillars are consistent with the trapezoid direction of the box; and the aperture of the small end of the installation hole is less or equal to the space between the small end of the light guide pillars. The transparent trapezoidal box with the conical installation holes is adopted, and the conical light guide pillars are arranged in the conical installation holes, and the light guide pillars correspond to pixels on the display panel, so that the trapezoidal magnifier effect of the whole box is achieved by using the function of amplifying and conducting pixel light points by the light guide pillars; therefore, the splicing gap between the display screens in a splicing screen or a splicing wall is eliminated, and the device is low in cost and has high operability.
Owner:SHENZHEN PROTRULY ELECTRONICS CO LTD

Handle rotary table rack camera-shooting round pressing plate copper alloy glass inspection equipment

PendingCN105547807AChange labor intensityOvercome the defect of no self-lockingMaterial strength using single impulsive forceEngineeringLight pillar
The invention relates to toughened glass test and inspection equipment, in particular to handle rotary table rack camera-shooting round pressing plate copper alloy glass inspection equipment. The equipment is improved in that a platen handle is arranged on the rear end vertical face of a test platen, handle ends are arranged at the two bent ends of the platen handle, and both the handle ends at the two bent ends are fixed to the rear end vertical face of the test platen; a movable camera assembly is arranged on a square camera shooting rod, a rotation impactor is slidably fixed to an impacting cross-bar, a circular orbit pressing plate assembly is fixed to the plane of the test platen, a cullet guider is fixed among a platen support, lock pin supports and the upper planes of support side plates, and a lower end opening of the cullet guider falls into an upper end opening of a cullet collecting cart. By means of the equipment, labor intensity of the fragmentation test is changed, camera shooting is conducted, and fragment images are transmitted to a computer processing center; the test platen is provided with the platen handle, light pillar lock pins are combined to be locked and located in pulling-and-insertion lock holes in the two sides of the test platen, and the defect that the platen handle does not have the self-locking function is overcome.
Owner:WENZHOU ECONOMIC TECH DEV ZONE HAIZHIJIE ELECTROMECHANICAL PROD DESIGN STUDIO

Method for measuring atmospheric optical turbulent current profile based on imaging laser radar of laser light beam

The invention discloses a method for measuring an atmospheric optical turbulent current profile based on an imaging laser radar of a laser light beam. Laser light is emitted vertically upward by a laser emission unit, beam expanding is carried out on the laser light through a beam expanding mirror to reduce a divergence angle of the laser light, and the light beam is formed; a pupil plate is installed at the front end of a telescope objective lens of an optical receiving unit, an optical wedge mirror is installed on the pupil plate, a CCD is installed at the rear end of a telescope, and when the telescopic mirror is aligned to the laser light beam to image the light beam, due to beam split action of a light wedge, two light beam images in the vertical direction occur on a CCD target face; light beam images formed by various image elements of the CCD correspond to light beams on different heights, the jitter amount of the CCD images in the horizontal direction on the different heights are counted through the adoption of a differential image moving method, turbulent current information in the route of an imaging receiving face of the laser light beam can be obtained, then turbulent current information on different integral paths is analyzed, and a turbulent current strength profile is obtained. The method has high time resolution and space resolution, and is easy to implement and complete in theory.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

LED condensation light source and material sorting device based on same

The invention provides an LED condensation light source applicable to the photoelectric sorting, which comprises an LED linear array, a fixing support, a scattering uniform light plate, a condensation pillar lens, wherein the condensation pillar lens is a plano-convex cylindrical surface lens; the LED linear array, the scattering uniform light plate and the condensation pillar lens are parallelly and fixedly mounted on the fixing support at certain intervals; the scattering uniform light plate is positioned between the LED linear array and the condensation pillar lens; light sent out by the LED linear array scatters through the scattering uniform light plate, and converges after penetrating the condensation pillar lens. The invention further provides a material sorting device based on the LED condensation light source. The LED condensation light source and the material sorting device have the advantages that emergent light of the LED condensation light source converges through the control of the angle of the emergent light, longer distance lighting can be realized, besides, the lighting luminance and uniformity can be guaranteed, the photoelectric sorting device provided by the invention can enlarge the distance from the LED condensation light source to a material detecting area, the problem of sticky glass window surface when the conventional sorting equipment is used for sorting materials is solved, and the sorting precision is improved.
Owner:HEFEI MEIYA OPTOELECTRONICS TECH

Pneumatic double-plate optical fiber tester for LED (Light Emitting Diode) indicating lamp

The invention relates to a pneumatic double-plate optical fiber tester for an LED (Light Emitting Diode) indicating lamp. A test operation board comprises a bracket, a control box and a pneumatic device; the bracket is taken as a support body; a test needle bed is arranged at the inner side of the control box; a positioning board for a circuit board is arranged above the test needle bed and is embedded in an open pore at the upper part of a box body; the pneumatic device comprises an air cylinder, a lifting stand and guide posts; the lifting stand is driven by the air cylinder to downwards move and press the circuit board, so that LED test points on the back of the circuit board are in contact with test needle heads; glass light posts are in contact with the LED surface of the circuit board; during testing, a power supply of a test circuit is connected and the LED is lightened; light transmits to a tester panel window of the test operation board through the glass light posts and optical fibers; and whether the LED is qualified or not is judged by visually observing the luminous state of the LED; and according to the test instrument, test efficiency of the LED can be increased, quality of products can be improved, operation work procedures are simplified and production efficiency can be increased.
Owner:TIANJIN ZHONGHUAN ELECTRONICS COMP

Light pole laser paper and printed matter color difference measurement method

The invention relates to light pole laser paper and a printed matter color difference measurement method. a color measurement automatic detection system is adopted, and in the case of measurement, the light pole direction of the light pole laser paper is vertical to the horizontal direction of a measurement platform; the distance between adjacent sampling points of a color measurement instrument in the horizontal direction of the measurement platform and the number are set, and color information of a sample at different positions is measured; in raw chroma data of a standard sample and a test sample and turnover chroma data obtained by arranging sampling point data in a reverse order, sampling points with the maximal L<*> value, the a<*> value and the b<*> value in a first light pole period are found out, and with the sampling points as reference, all chroma values are translated; and color differences and average color difference values are calculated, different alignment modes are taken to calculate the minimal color different value in the obtained average color difference value to serve as the final color different value for the standard sample and the test sample. All to-be-tested samples are unified to be positioned to corresponding positions on the light pole laser paper for sampling and comparison, and the measurement precision is improved.
Owner:BEIJING INSTITUTE OF GRAPHIC COMMUNICATION

A method for measuring grating parameters of light pillar laser paper by utilizing a spectrophotometer

The invention relates to a method for measuring grating parameters of light pillar laser paper by utilizing a spectrophotometer. The method comprises the following steps: according to a grating equation, drawing a distribution relation graph of grating constants and wave lengths under different diffraction angles and diffraction order numbers; utilizing the multi-angle spectrophotometer to collect spectroscopic data of the light pillar laser paper at different measurement areas along the light pillar direction and vertical to the light pillar direction, and drawing a spectral energy curve distribution diagram under different probing angels; with the distribution relation of grating constants and the wave lengths under different diffraction angles and diffraction order numbers, analyzing change rules of the obtained spectroscopic data and calculating grating constants of rating strips; and fixing the relative position of an unthreaded hole of the multi-angle spectrophotometer and the laser paper, rotating plane of the light pillar laser paper for 90 DEG, measuring spectral information of the same place, and deducing ruling direction of the rating strips of the light pillar laser paper. The method solves the problem, that the laser paper is difficult to measure accurately, puzzled in scientific community and industrial community to some degree; and the method has the advantages of being convenient to operate and simple and fast.
Owner:BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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