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| Number | Title | Issue Date |
| 7924415 | Apparatus and method for a light direction sensor The present invention provides a light direction sensor for determining the direction of a light source. The system includes an image sensor; a spacer attached to the image sensor, and a pattern mask attached to said spacer. The pattern mask has a slit pattern that ... | 04/12/2011 |
| 7227626 | Method for determining the current position of the heads of vehicle occupants The invention relates to a method for determining the current position (A, B, C, D) of a head (9) of an occupant (8) in the passenger compartment (2) of a motor vehicle (1), said head moving toward an automatic dynamic disabling zone (... | 06/05/2007 |
| 7199872 | Method and apparatus for ground-based surveying in sites having one or more unstable zone(s) The invention relates to ground-based surveying on a site (2) which comprises an unstable zone (60) and at least one control point (FCP1, FCP2, FCP6, FCP7; CP1–CP3) placed outside the unstable zone, in which ... | 04/03/2007 |
| 7113271 | Method to accurately measure the angular orientation of a rotating axis to a reference line A method is described that measures the angular orientation of a rotational axis to a reference line. The reference line is defined by the position of a string. The alignment device includes a collimated light source that is projected approximately perpendicular to ... | 09/26/2006 |
| 6462810 | Surveying system The present invention provides a surveying system, which comprises a survey instrument main unit for receiving and detecting a guide light projected from a collimation target, a horizontal rotating mechanism 38 for rotating the survey instrument main unit... | 10/08/2002 |
| 6274862 | Arrangement for determining the incidence angle of radiation and especially solar radiation A device for determining the angle of incidence () of incident radiation and particularly sunlight (S) includes an array of light sensitive elements (10, 11 and 12) and a shadow mask (15) arranged above the elements. The shadow mask (15) includes a... | 08/14/2001 |
| 5189295 | Three axis earth/star sensor An earth sensor primarily for use at geosynchronous altitude measures Pitch, Roll, as well as Yaw. Pitch and Roll are obtained from the sun illuminated earth crescent viewed through a pinhole by a CID video camera. A circular mask positioned in front of t... | 02/23/1993 |
| 4810870 | Sun sensor with periodic pattern reticle and reference phase signal generating means Sunlight passes through the light-transmission sections of a periodic pattern reticle of a sun sensor, and light components thus divided at regular intervals are incident on the light-receiving surface of a photoelectric converting section. The photoelect... | 03/07/1989 |
| 4794245 | Position sensor A radiant energy angle sensor is provided wherein the sensitive portion thereof comprises a pair of linear array detectors with each detector mounted normal to the other to provide X and Y channels and a pair of slits spaced from the pair of linear arrays... | 12/27/1988 |
| 4791297 | Yaw sensing conical scanner horizon sensor A radiation detector is scanned over two fan fields of view by first and second cylindrical lenses spaced about the axis of rotation of a common optical element positioned on the axis of rotation. The optical element is rotated about the optical axis by a... | 12/13/1988 |
| 4710619 | Apparatus for generating a signal providing information regarding a radiating source, especially an infrared source Information regarding an object, especially brightness information, is obned by scanning the object with an optical scanner, especially an infrared scanner to provide a respective analog signal. The analog signal is produced by passing the received radia... | 12/01/1987 |
| 4397559 | Apparatus for processing electromagnetic radiation and method Measuring apparatus including a ruled member having alternate transparent and opaque zones. An optical coupler connecting the ruled member with electromagnetic radiation-conversion apparatus. The conversion apparatus may include a photomultiplier and a di... | 08/09/1983 |
| 4018532 | Sun direction detection system A sun direction detection system is disclosed. It includes a housing with a slit, through which a line image of the sun is directed into the housing in a first direction. Placed in the housing is a substrate on which at least one pair of detectors are dep... | 04/19/1977 |
| 3992106 | Error cancelling scanning optical angle measurement system An attitude determining system for vehicles, such as spacecraft or for ground-based environments measures the angle between a reference and the line-of-sight to a star or other celestial object of known position or to aircraft and missiles. The system inc... | 11/16/1976 |
| 3981588 | Means and method for determining meridian location and azimuth Stellar events are timed through a lens system and reticle by a photomultiplier tube, times are compared and a difference factor computed, the difference factor is implemented to move the lens system, reticle and photomultiplier until times are equal, ver... | 09/21/1976 |
