37results about "Sextants" patented technology

A vertical support rigidly mounted to a planar base positions and supports a cryocooler expander unit off axis and away from a sample to be examined. The sample support is likewise rigidly mounted to the planar base with a rigidly mounted sample housing therein. The cryocooler expander unit is suspended in the vertical support by spring dampening bearings. A pair of opposing flexible vacuum bellows connects the cryocooler expander unit to the sample housing and vertical support. This configuration isolates the sample from vibration. Flexible thermal links associated with an predictive electronic closed loop control sequence maintains sample temperature.

A light-emitting apparatus, for enabling a beam of light to be projected on a desired target located a distance away to project the beam on the desired target without any or substantially any undesired movement. The apparatus may include a housing, a light generating device located within the housing and operable to generate a beam of light, a sensing device or devices for sensing an undesired action of the housing, a control circuit operable to provide a control signal corresponding to the sensed undesired action, and a drive device operable to counter act all or at least some of the undesired action of said housing in accordance with said control signal. The sensing device or devices may be one or more gyroscopes, accelerometers or other such devices.

A laser reference device includes at least one planar or flat surface and an internal laser light source for generating a laser light beam. A lens inside the device may convert the laser light into a fan-shaped beam, and project the beam adjacent the planar or flat surface of the housing. The fan-shaped beam thus projects along that surface of the housing. If the laser leveling device is placed with the flat surface on a table or floor, for example, the fan-shaped beam will be in a level plane. This allows a user to place the laser leveling device on a surface and generate a laser light to align surfaces or objects, such as objects on a wall.

A method includes initializing an inertial measurement unit (IMU) at a starting location and gathering acceleration and rotational data as the IMU is moved to an intermediate location. An indication that the IMU is at the intermediate location is received. The method includes gathering acceleration and rotational data as the IMU is moved to an ending location and calculating a position of the ending location based on a known position of the starting location and the acceleration data. The method includes calculating corrected acceleration data based on a difference between the calculated position of the ending location and a known position of the ending location, and calculating a position of the intermediate location based on the corrected acceleration data are provided.

An automatic inclination corrector and an inclination sensor using the automatic inclination corrector free from the temperature, for optical instruments. A transparent container 3 seals silicon oil C having a free liquid surface C1. A collimation lens 2 guides the laser beam from the diode 1 to the free liquid surface C1. The inclination corrector corrects the tilt of the instrument to glide the laser beam L4 from the container 3 to advance the beam upward with a normal angle. A reflecting mirror 5 reflects beam L2 after total reflection at the free liquid surface C1. The beam is inverted by a roof prism 6 and passes through silicon oil C and the free liquid surface C1 once. This removes the refractive index n influence to the laser beam L4, and gives an angular change to the laser beam 4 to head the laser beam L4 to a fixed direction.

A capacitor charging semiconductor apparatus including a plurality of serially connected capacitors to be charged. A direct current source is applied to the plurality of capacitors. A plurality of bypass transistors is provided to bypass charge current supplied to the plurality of capacitors when a voltage of a capacitor exceeds a prescribed reference level. A plurality of parallel monitor circuits is provided to control the plurality of bypass transistors to equally charge the plurality of capacitors. A plurality of capacitor connection terminals is connected to both ends and intersections of the plurality of capacitors. A plurality of transistor connection terminals is connected to the plurality of control terminals of the bypass transistor. A prescribed number of capacitors is optionally charged by increasingly shorting a number of capacitor connection terminals from the highest and lower voltage side capacitor connection terminals.

Disclosed is a system of navigation that is not dependent on man-made satellites. Disclosed is a digital imaging system that may be calibrated using known angular distances and then used to determine unknown angular distances, including the angular distance of celestial bodies above the user's horizon. The digital imaging system may be used in conjunction with a celestial database to determine lines of position and establish a fix revealing the geographic location of the user. The system is expected to be most useful when employed on vessels at sea, including aircraft, and may also be useful on land. The invention offers an alternative to Global Positioning Systems, which are subject to inactivation by governments or traditional mechanical-optical sextants, which are time consuming and cumbersome to use.

The present invention discloses navigation mapper equipment, and particularly relates to a dial for a sextant. The dial comprises a disc body, wherein the disc body is an integrally forming sector structure, the disc surface of the disc body is provided with six adjacent special-shaped holes, and the outer edge of the disc body is provided with a scale display disc. According to the present invention, according to the mechanical principle, the six adjacent special-shaped holes are utilized so as to essentially reduce a weight of the sextant dial, improve stability, easily achieve taking or placing, and ensure product quality; and scale readings are arranged on the scale display disc, such that a service life of the scale readings is increased, and the problem that the scale readings can be aged or unclear due to often friction can not be generated.

A visual aid is used by a pilot in an aircraft to position himself in the cockpit by an axial movement, called movement along the X axis, in an aircraft reference coordinate system, and by a vertical movement, called movement along the Z axis, in the aircraft reference system. The visual aid comprises two geometric shapes (3, 4), separated in space and designed to be visually aligned by the pilot; these shapes have the characteristic that each has a visual reference (31, 41) on its surface, approximately in the same horizontal plane perpendicular to the vertical XZ plane.

In such sports, as golf, foot alignment in a stance is an important. To obtain proper foot alignment is hard. There are many aids one could use to help a person to obtain a proper alignment. But, this invention/patent idea of a “ray line beam device” that is attached to the shoe gives a person an opportunity to line their feet properly.

The invention discloses a transmission device of a sextant. The transmission device comprises a dial, a micro-motion disk and an indicating arm which is fixedly connected with an axis bracket of the dial. The micro-motion disk is connected with the dial through the indicating arm, and moves in a relatively sliding manner along the outer edge of the dial; a salient strip is arranged at the side edge of the micro-motion disk, and is in relative contact with the surface of a handle assembly fixed on the indicating arm. The micro-motion disk slidably moves on the dial through handles, when the micro-motion disk works, the handles are furled and thus the micro-motion disk can slide on the dial, and when the handles are released, and thus a certain distance can be kept between the micro-motion disk and the dial. The transmission device disclosed by the invention has the advantages of being simple in structure of the whole scheme, concise in working procedures and convenient to use, and saves the labor cost, and improves the work efficiency.

The invention discloses a self-reference sextant. The self-reference sextant comprises a mechanical sextant, a movable mirror tilt angle sensor, a fixed mirror tilt angle sensor, an information processing system, a display unit, a communication interface, a host computer application system, a control system and a power supply system. The movable mirror tilt angle sensor is used for sensing a tilt angle of the mirror face of a movable mirror of the mechanical sextant, the fixed mirror tilt angle sensor is used for sensing a tilt angle of the mirror face of a fixed mirror of the mechanical sextant, the information processing system collects tilt angle information from the two tilt angle sensors in real time and processes the collected information according to a control instruction from the control system, the display unit dynamically displays the processing results of the observed information, the host computer application system exchanges information with an automatic angle measurement integrated device through a communication interface and calculates results and the power supply system provides power for the whole self-reference sextant. The self-reference sextant does not influence the original use of a navigation sextant, is independent of water-sky line observation and greatly improves positioning opportunity, positioning precision and an automation degree.

A sextant comprises a disc, a movable lens, a fixed lens, a telescope, a swing arm, an installation shell, a support, a first reflector and a second reflector. The installation shell is a hemispherical shell with an upward port, a dial of the disc is downward and vertically arranged in the installation shell, and the installation shell is installed on the support through a rotary mechanism so that the port can be kept to be parallel to the sea level all the time. The first reflector is used for receiving light reflected by the fixed lens and reflecting the light to the second reflector. The telescope is arranged on the edge of the top of the installation shell and can receive the light reflected by the second reflector, a light-sensitive resistor is arranged on the edge of the movable lens, and the light-sensitive resistor is connected with a buzzer. The installation shell and the support are matched so that the observation face of the sextant can be always kept flush with the sea level, and horizontal stability of the sextant is improved. The first reflector, the second reflector, the movable lens and the fixed lens are matched so that the light can be located above the installation shell after being reflected, the light can be conveniently observed through the telescope, and use is convenient. The light-sensitive resistor and the buzzer are arranged so that an operator can quickly and conveniently search for a light source.

A sextant high in horizontal stability comprises a panel, a moving mirror, a fixed mirror, a telescope, a swing arm, a mounting shell, a support, a first light-reflecting mirror and a second light-reflecting mirror, wherein the mounting shell is a hemispherical shell with an upward end opening, a dial of the panel faces downward and is arranged in the mounting shell vertically, and the sidewall of the mounting shell is provided with a through hole allowing the fixed mirror to expose. The mounting shell is mounted on the support by enabling the end opening thereof to keep parallel to the sea level constantly through a rotating mechanism. The first light-reflecting mirror and the second light-reflecting mirror are arranged on the panel, the first light-reflecting mirror is used for receiving rays reflected by the fixed mirror and reflecting the received rays to the second light-reflecting mirror, and the telescope is arranged on the mounting shell and capable of receiving rays reflected by the second light-reflecting mirror. The sextant high in horizontal stability has the advantages that the mounting shell is matched with the support to enable an observation surface of the sextant to keep horizontal to the sea level constantly, so that horizontal stability of the sextant is improved; the first light-reflecting mirror and the second light-reflecting mirror are matched with the moving mirror and the fixed mirror to enable the reflected rays to be positioned above the mounting shell, so that observation of the rays by the telescope is facilitated, and convenience in use is achieved.

The invention discloses a centralized positioning assembly for a sextant indication arm. The centralized positioning assembly is provided with a dial, wherein the end part of the dial is provided with a circular hole which is matched with a centre bearing, the center bearing is in gap junction with the dial through the circular hole, the circular hole is communicated with a threaded hole for fixing the center bearing, a cone point set screw is arranged in the threaded hole and is used for fixing the center bearing, and a copper pointless screw is additionally arranged behind the cone point set screw and can effectively prevent an inner screw from loosening, so that the center bearing and the circular hole are arranged on a same axis, and the measurement accuracy is also improved.

The invention discloses a navigation surveying and mapping instrument, and particularly relates to a sextant provided with a body. The surface of the body is provided with a protective layer, and the protective layer is an alumina adhesive layer. The alumina adhesive layer arranged on the surface of the sextant has strong adhesion ability, not only can be in favor of a coloring effect of a paint, but also can isolate corrosion of moist air to the sextant, and thereby playing an effect of protecting the sextant and prolonging the service life.