133 results about "Pentagonal prism" patented technology

In an embodiment, an antenna for a medical device, e.g., an implantable medical device (IMD), comprises an electrically conductive wire that spirals to form a three-dimensional shape of a rectangular cuboid. In another embodiment, the antenna comprises an electrically conductive wire that spirals to form a three-dimensional shape of an elliptical cylinder, an oval cylinder, an elongated pentagonal prism, an elongated hexagonal prism, or some other shape where the longitudinal diameter of the antenna is greater than the lateral diameter of the antenna. The antennas are sized to fit within a portion of a header of the medical device. Such antennas are designed to provide increased antenna gain and antenna bandwidth.

The invention discloses a full optical path drift compensation high-precision roll angle measuring method and a device, and belongs to the technical field of photovoltaic testing. By using a pair of retro-reflector as sensitive device, the roll angle information is obtained through the parallel two-beam differential measurement, in which the parallel beam through a set of double pentagonal prism and a pentagonal prism splitting the collimated laser beam after splitting obtained by the dual beam parallelism prism precision guaranteed without adjustment, greatly enhance the feasibility and practicability of measurement methods; by using a rectangular prism as beam translation and reverse means that two beams measuring light path completely overlap, and the light path direction reciprocal use This feature, in twice while improving measurement resolution, combined with a total path of the light drift compensation method, can achieve all-optical laser beam path is completely drift compensation, to resolve the current measuring method using laser collimation of the laser beam cannot completely eliminate the drift angle the impact of the common problems that can achieve the roll angle measurement resolution of better than 0.1 'accuracy of better than 1'; compact optical structure of the present invention, the adjustment is simple, no more freedom crosstalk error, moving parts without cable, easy on-site measurement .

The invention discloses a method for preparing a large-size sheet by using small-diameter wood. The method comprises the steps of: cutting small-diameter wood with a diameter of 6-11cm into wood sections with lengths of 1m, grouping into 5 groups according to the diameter of the small head and the 10mm difference, and drying until the water content is 12 percent; sawing the wood sections into rough regular hexagonal prisms, inscribed circles of bottom surfaces of which are 46mm, 56mm, 66mm, 76mm and 86mm, extending through a finger joint tenon and cutting according to the specification, milling into refine regular hexagonal prisms, inscribed circles of bottom surfaces of which are 40mm, 50mm, 60mm, 70mm and 80mm; symmetrically splitting the regular hexagonal prisms into quadraprisms through the maximum diagonal plane; symmetrically splitting the regular hexagonal prisms into pentagonal prisms through a plane vertical to the side surfaces of the hexagonal prisms; and selecting the quantities of the refine regular hexagonal prisms, and the pentagonal prisms and the quadraprisms, thereby obtaining a rectangular large-section glued wood beam through coating, assembling and bidirectional-pressurizing, and sawing into the large-size sheet with the thickness of 5-20mm. According to the method, the utilization rate and the use value of the small-diameter wood are improved.

The invention discloses a method and a device for measuring material deformation based on automatic tracking of laser marks. According to the method, laser output by a laser passes through a division plate to form laser marks with different patterns, is ejected to a pentagonal prism and irradiated on a mark line of a material to be tested (namely a sample) after being reflected by the pentagonal prism; a servo motor and a motor controller drive the pentagonal prism to rotate, so that laser marks automatically track the changes of the sample mark line during deformation of the material; imagesof the laser marks and the sample mark line are acquired by a charge coupled device (CCD) in real time and input to a computer; and the deformation of the sample is obtained after digital image processing. The device has high anti-interference capability, and is low in cost and easy for practical application. Moreover, the measurement precision of the material deformation can reach over 0.02 percent.

A laser centering device (30) that is attached to a survey apparatus by replacing it with a centering telescope optical system is formed of an inner barrel (32) that fixes a pentagonal prism (40) at one end thereof and is internally provided with a laser beam source (42), an intermediate barrel (34) that moves the inner barrel in the axial direction and fixes it so as to adjust the position thereof, and an outer barrel (36) that turns the intermediate barrel around the axis and fixes it so as to adjust the angle thereof, and at the same time, is fixed at the portion (38) for fixing the centering telescope optical system of the survey apparatus (1). The invention provides a laser centering device for which the emission direction of a laser beam is simply adjusted.

The invention discloses a multi-beam long-rail interferometer for detecting a grazing tubular off-axis aspheric mirror, belonging to detection equipment in the technical field of optical detection. The technical problem to be solved is to provide the multi-beam long-rail interferometer for detecting the grazing tubular off-axis aspheric mirror, and the technical scheme comprises a laser light source, a polarizer, a multi-beam splitter, an aperture, a polarization beam splitter, 1/ 4 wave plates, pentagonal prisms, a tubular aspheric mirror to be detected, Fourier transform lenses, CCD camera and the like. The polarizer, a right angle prism, the multi-beam splitter, the aperture, a half-wave plate, the polarizing beam splitter, a second 1/4 wave plate and a reference plane mirror are arranged on the optical axis of the laser light source successively; the prismatic face of the polarization beam splitter takes 45 degrees with the optical axis, and the right side thereof is provided with the Fourier transform lens and the CCD camera successively; the left light path is provided with a first 1/4 wave plate, a first pentagonal prism and a second pentagonal prism, and the exit face of the second pentagonal prism is opposite to the inner surface of the tubular off-axis aspheric mirror to be detected; and the tubular off-axis aspheric mirror to be detected is placed on a rotation platform.

The invention relates to a device and method for automatically revising the focal plane position of a collimator. The device comprises a dividing plate, a pentagonal prism, an aim-taking system and a main control computer. A to-be-tested collimator is arranged between the dividing plate and the pentagonal prism. The pentagonal prism is arranged at a light outlet of the to-be-tested collimator. The aim-taking device is arranged on an light outgoing path formed by turning a light path through the pentagonal prism. The main control computer respectively controls the dividing plate and the pentagonal prism to move and controls image and data collection by the aim-taking system. The device and method for automatically revising the focal plane position of the collimator are high in revising efficiency and small in number of judging errors.

The invention belongs to the technical field of inorganic nanomaterial preparation and particularly discloses a rhodium nano nail cluster and a synthesis method of the rhodium nano nail cluster. According to the method, the Rh nano nail cluster with unique morphology and a unique structure is synthesized by a solvothermal method by taking rhodium acetylacetonate as a precursor, oleylamine and ethylamine as a solvent, a reducer and a morphology control agent and polyvinylpyrrolidone as a stabilizing agent. The prepared Rh nano nail cluster comprises 12 Rh nano nails; nail caps of the Rh nano nails are pentagonal pyramids; nail studs are pentagonal prisms; the single Rh nano nail is 25-105nm in length and 7-15nm in width; the prepared Rh nano nail cluster is uniform in particle size, large in specific surface area and high in atom utilization ratio and shows good electrocatalytic activity; and compared with the traditional Rh catalyst, the electrocatalytic activity is improved obviously.

A polishing rubber disc face shape detection device for a large annular polishing machine comprises a straight guide rail, a laser device, a lens set, an illumination slit, a light splitting prism, a pentagonal prism, a rectangular prism, a base, a CCD, a displacement regulation device, a movable table and a telescopic sleeve. The polishing rubber disc face shape detection device can detect the face shape of a polishing rubber disc of the large annular polishing machine and is simple in structure, convenient to operate, stable, reliable and high in accuracy, safety of workpieces is ensured in the workpiece carrying process, and damage caused when external impurities are led to the surfaces of the workpieces is avoided.

The invention discloses a method and a device for measuring the radial deviation of a metal tank. According to the method, a wall climbing robot drags and carries an optical pentagonal prism, which can achieve a good optical reflection effect and is controlled by a corresponding electric control system to make the robot walk upwards and downwards along the bus direction of the metal tank wall and to automatically position the measurement points. An electronic total station is utilized to track the pentagonal prism so as to automatically perform range finding when the robot arrives at the various set measurement points and to realize radial deviation measurement with higher precision and wider applicability. The design of the invention is innovative and reasonable. Highly intelligent, the device works reliably and safely. The method and the device are completely suitable for occasions with explosions and dangers. Convenient and flexible to operate, the method and the device can reduce the labor intensity greatly, therefore, increasing the measurement efficiency. In addition, with the method and the device, the automation degree for radial deviation measurement of oil tank can be increased so as to better meet the requirements illustrated in the check regulations of JJG168-2005 Stand-up Metal Tank Capacity, therefore, making the method and the device of good prospects for wide promotions.

The invention discloses a testing apparatus for the shape of a large-aperture flat mirror. The testing apparatus includes a pedestal, a rotary table, a rotary device, a pentagonal prism, a flat mirror, a grating ruler, a first autocollimator and a second autocollimator. The rotary table is arranged on the pedestal. The rotary device is fixedly connected with one end of the rotary table and is driven by the rotary device to rotate. The pentagonal prism, the flat mirror and the grating ruler are all arranged on a plane where the rotary device is away from one side of the rotary table. The firstautocollimator and the second autocollimator are arranged on one end of the rotary device and are closely adjacent to each other by being perpendicular to the rotary device. The pentagonal prism is inalignment with the first autocollimator, and the flat mirror is in alignment with the second autocollimator. The testing device is capable of testing the surface of a large-aperture flat mirror in ahorizontal direction and is high in testing accuracy.

The invention provides an optical coaxial calibration device and an application method thereof. The device includes a main mirror, a beam splitter, a receiving pentagonal prism, a receiving steering prism, an aiming pentagonal prism, an aiming steering prism, a white light source and a CCD camera; an emitting optical axis is emitted to the main mirror and reflected by the main mirror to focus to the CCD camera; a receiving optical axis passes through the receiving pentagonal prism and the receiving steering prism and is reflected by the main mirror to the CCD camera; an aiming optical axis passes through the aiming pentagonal prism and the aiming steering prism and is reflected by the main mirror to the CCD camera; the emitting optical axis, the receiving optical axis and the aiming optical axis are adjusted to be coaxial with the white light source as the reference; the beam splitter divides a to-be-measured light source into two parts and makes one part of the to-be-measured light source reach the position of the white light source and the other part of the to-be-measured light source reach the position of the CCD camera. According to the optical coaxial calibration device and the application method thereof, the main mirror is small in diameter and weight and convenient to move, and the whole system structure is simple and convenient to operate.

The invention provides a preparation method of a regular pentagonal prism-shaped copper micrometer wire, and relates to preparation methods of micrometer nanoelectrode materials. The preparation method comprises the following steps: EDTA-2Na and copper salt are dissolved in water, urotropin and CTAB are sequentially added at the time of stirring, and a mixed solution is obtained after uniform stirring; the mixed solution is placed in a high pressure reactor for a reaction on the condition of 120-200 DEG C for 24-240 hours; after the reaction is over, sediment is extracted through a centrifugal effect, washed and dried to obtain the regular pentagonal prism-shaped copper micrometer wire. According to the preparation method, chemicals low in cost are used; compared with most copper wire preparation methods, the preparation method has the advantages of being simple, easy to operate, high in yield, low in pollution, low in energy consumption, economical and environmentally friendly since raw materials can be recovered, and the like.

The invention relates to a depolarization pentagonal prism which comprises a pentagonal prism body and a wedge corner piece.The oblique face, adjacent to the right-angle face, of the pentagonal prism body is connected with the longest oblique side of the wedge corner piece in a face mode.The pentagonal prism body and the wedge corner piece are made of the same substrate material.A depolarization medium thin film layer and a glue layer are arranged between the combining faces of the pentagonal prism body and the wedge corner piece.The pentagonal prism body is plated with the depolarization medium thin film layer.The glue layer is glued between the depolarization medium thin film layer and the wedge corner piece.The defects that a metal depolarization thin film frequently used for depolarization of an existing pentagonal prism is not excellent in depolarization effect, not long in service life, large in design and production control difficulty, poor in matching degree with glue, and not high in repeatability and stability are overcome, and the depolarization pentagonal prism has the advantages of being good in depolarization effect, good in matching degree with various types of glue, low in design and production precision control difficulty and high in repeatability and stability.

The invention discloses a method for short-distance calibration of laser plummet device. A vertical and upward laser beam is converted to a horizontal laser beam in an indoor small region by a pentagonal prism and a planar mirror, the total optical distance of the beam is same as conventional calibration distance, a beam ending point can fall into a target near to equipment, an operator is convenient to directly observe, measure and adjust, a single person can rapidly complete operation, and the problems of labor and time waste, high check cost and the like of a conventional method are also solved; the method has the advantages of accuracy, safety, high efficiency, environmental friendliness and labor saving, random verification can be performed, the device is low in cost, is simple to maintain and can be repeatedly used, and the calibration accuracy conforms to national technological specification requirement.

A light engine combines light of first, second, and third color ranges using three pentagonal prism elements. Each prism has first and second diagonal surfaces. Each first diagonal surface has a first dichroic treatment and each second diagonal surface has a second dichroic treatment. The prisms are arranged with the first diagonal surface of the first prism juxtaposed with one diagonal surface of the third prism and with the second diagonal surface of the second prism juxtaposed with the other diagonal surface of the third prism. A first light beam of the first color is reflected at a right angle by the first diagonal surfaces, and a second light beam is reflected at a right angle by the second diagonal surfaces. A third light beam of the third color passes unreflected through the surfaces to produce a combined light beam or common output light path.

The invention discloses a surface fluid driving device. The device comprises a fan, a bracket and two pressure-equalizing chambers, wherein the bracket is connected with the fan; the two pressure-equalizing chambers are symmetrically arranged on the bracket up and down; rectangular narrow slots which correspond to each other in position are formed in the two pressure-equalizing chambers; and each pressure-equalizing chamber comprises an outer shell and an inner shell which is sleeved in the outer shell, wherein the outer shell is designed into a hollow pentagonal prism structure with two closed ends, the inner shell is designed into a hollow cylindrical structure with an opened end and a closed end, and a flow-equalizing wall is horizontally arranged between the outer shell and the inner shell and divides the space between the outer shell and the inner shell into two independent chambers. According to the surface fluid driving device, pressurized gas is sprayed from the slots of the outer shells of the pressure-equalizing chambers to form a gas cutter, and the gas cutter is used for scraping excessive liquid substances on the surface of a band steel, so that the quality and the yield of a product are increased substantially, and the device is also convenient to maintain.

The invention relates to an alignment device redirector, belongs to the technical field of precise calendar design, surveying instrument manufacture, measuring instrument detection and the like, and mainly solves the technical problem of rotating an alignment object image for 90 degrees around a main optic axis. The alignment device redirector consists of a pentagonal prism mounting part and a right angle prism mounting part. The right angle prism mounting part finishes the positioning and mounting of a right angle prism. The pentagonal prism mounting part finishes the positioning and mountingof a pentagonal prism, and finishes positioning connection with the right angle prism mounting part and the fixed connection of a reserved port and an alignment device. During calibrating focusing operation errors of a theodolite and a total station type electronic tacheometer, the alignment device redirector is matched with the alignment device to produce a high-precision horizontal alignment target for the device.