2521 results about "Dual axis" patented technology

A point-to-point, wireless, millimeter wave communications link between two stations at least one of which is a mobile station. A millimeter wave transmitter system operating at frequencies higher than 57 GHz with a tracking antenna producing a beam having a half-power beam width of about 2 degrees or less and a millimeter wave receiver also with a tracking antenna having a half-power beam width of about 2 degrees or less. In preferred embodiments each mobile station has a global position system (GPS) and a radio transmitter and both tracking antennas are pointed utilizing GPS information from the mobile station or stations. The GPS information preferably is transmitted via a low frequency, low data rate radio. Each millimeter wave unit is capable of transmitting and / or receiving, through the atmosphere, digital information to / from the other station at rates in excess of 155 million bits per second during normal weather conditions. In preferred embodiments actually built and tested by Applicants digital information has been transmitted at rates of 1.25 gigabits per second. Preferred communication links described here are millimeter wave links operating at frequencies of 71-73 GHz and 74-76 GHz mounted on simple two-axis gimbals. Pointing information of the required accuracy is provided by GPS receivers and standard radio links which send the GPS calculated positions to the millimeter wave systems at the opposite end of the link. In these embodiments there is no need for any complicated closed loop pointing information derived from received signal intensity or phase. On moving platforms locally generated inertial attitude information is combined with the GPS positions to control pointing of the gimbaled transceivers.

An electrode is exposed to a plasma generation volume and is defined to transmit radiofrequency power to the plasma generation volume, and includes an upper surface for holding a substrate in exposure to the plasma generation volume. A gas distribution unit is disposed above the plasma generation volume and in a substantially parallel orientation to the electrode. The gas distribution unit includes an arrangement of gas supply ports for directing an input flow of a plasma process gas into the plasma generation volume in a direction substantially perpendicular to the upper surface of the electrode. The gas distribution unit also includes an arrangement of through-holes that each extend through the gas distribution unit to fluidly connect the plasma generation volume to an exhaust region. Each of the through-holes directs an exhaust flow from the plasma generation volume in a direction substantially perpendicular to the upper surface of the electrode.

An eyepiece includes a display module for providing display light, a concave end reflector, and a viewing region including a partially reflective surface to redirect at least a portion of the display light out of an eye-ward side of the eyepiece along an emission path. The partially reflective surface is obliquely angled with an offset from 45 degrees relative to the eye-ward side to cause the emission path to have a first oblique angle in a horizontal dimension relative to a first normal vector of the eye-ward side. The concave end reflector is tilted such that a second normal vector from a center point of the concave end reflector is obliquely angled relative to a top or bottom surface of the eyepiece to cause the emission path to have a second oblique angle in a vertical dimension relative to the first normal vector of the eye-ward side.

An apparatus and method for determining an inclination angle θ between an axis of an elongate object such as a cane, a pointer or a jotting implement such as a pen, pencil, stylus or the like and a normal to a plane surface at times when a tip of the elongate object is contacting that plane surface. The apparatus has an emitter mounted on the object for illuminating the plane surface with a probe radiation at an angle σ with respect to the axis of the object. The apparatus also has a detector mounted on the elongate object for detecting a radiation characteristic of a scattered portion of the probe radiation returning from the plane surface and a computing unit for deriving the inclination angle θ from the radiation characteristic. A scanning arrangement, such as a uniaxial or biaxial scanner, or a light guiding optic can be used for varying angle σ, and the probe radiation can be emitted in the form of a scan beam. Preferably, the emitter and detector of the scattered portion of the probe radiation are integrated and the scattered portion of the probe radiation whose characteristic is being measured is the back-scattered portion. The radiation characteristic detected by the detector can be the intensity, polarization, time-of-flight or any combination thereof.

A solar concentrator is provided that comprises two stages. The first stage comprises either a trough-shaped concentrator cusp unit having two major opposed sides joined by two ends. The inner surfaces of the first stage concentrator are mirrored. Further, the ends have two flat, angled surfaces, while the two sides have a Bezier-generated cylindrical shape that approximate parabolic surfaces followed by a straight section. The second stage comprises a bi-axial gradient refractive index (GRIN) element, in which two gradient refractive index materials, each having a high index surface and a low index surface, are joined together along their high index surfaces. The two ends of the bi-axial element are flat, while the two sides also have a Bezier-generated cylindrical shape that approximate parabolic surfaces followed by a straight section. The top surface of the bi-axial element is provided with a cylindrical surface, while the bottom, or exit, surface is ground flat. The high index boundary is parallel to the side surfaces of the first stage unit. A solar cell is bonded to the flat exit surface of the second stage of the concentrator of the present invention. An array of such concentrators and solar cells, in which the solar cells are electrically interconnected, may then be deployed for converting solar energy into useful electrical energy. The 2-D / 3-D concentrator evidences much lower mass than prior art concentrators. Further, as the array, or panel, of solar cells wobbles in space, the concentrator will continue to operate, even at lower efficiencies, due to the larger acceptance angle. Concentration ratios on the order of 50x are realized with the present concentrator. However, design studies allow concentration ratios in excess of 300x when used with 3-D versions of the same concept. The second stage can comprise mirrored surfaces. Or, the first stage can comprise a conical section and the second stage a radial GRIN element.

It is an object of the present invention to provide an innovative hinge device of a dual-shaft construction that performs a synchronized pivoting motion, and that can smoothly perform an undulating pivoting motion without any unsteadiness; and an electronic device using the hinge device. The present invention is a hinge device in which a second member 2 is connected to a first member 1 so that the second member 2 can perform an undulating pivoting motion from a state in which the first member 1 and second member 2 are overlapped, wherein the hinge device is constructed so that pivot shaft parts 4 and 5 are disposed in parallel on a hinge base 3 disposed between the end part of the first member 1 and the end part of the second member 2; the hinge base 3 is provided so as to be free to perform an undulating pivoting motion with respect to the first member 1 via the first pivot shaft part 4; the second member 2 is disposed so as to be free to perform an undulating pivoting motion with respect to the hinge base 3 via the second pivot shaft part 5; a first pivoting part 6 and second pivoting part 7 that pivot in a relative manner when performing an undulating pivoting motion are respectively disposed on the first pivot shaft part 4 and second pivot shaft part 5; and the first pivoting part 6 and second pivoting part 7 are connected by a connecting link part 17, so that the second pivoting part 7 is caused to perform a transmitted co-pivoting motion by this first pivoting part 6.

A catheter having an elongated shaft with a tubular member which forms at least a portion of the shaft and which is formed of a biaxially oriented thermoplastic polymeric material, and a method of forming the catheter shaft by radially and longitudinally expanding the tubular member to biaxially orient the polymeric material. A catheter of the invention has an improved combination of low bending stiffness, high rupture pressure, and high tensile strength, for improved catheter performance.

A two-stage dual-pintle hinge mainly includes at least one connecting element which has two apertures run through by a first axis and a second axis in the same direction. The first axis and the connecting element form a first pivot displacement, and the second axis and the connecting element form a second pivot displacement. The first and second axes have respectively a first anchor portion and a second anchor portion. The connecting element has a corresponding third anchor portion. During the first pivot displacement, the first anchor portion and the third anchor portion form an anchor relationship and drive the second pivot displacement of the connecting element and the second axis. During the second pivot displacement, the second anchor portion and the third anchor portion form an anchor relationship to stop pivoting.