Linear direction sensor cameras for position measurement
Patent 4973156 Issued on November 27, 1990. Estimated Expiration Date: 
October 10, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 10, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References H412 3084261 Arrangement for locating radiaring sources Arrangement for locating radiating sources Optical direction of arrival sensor with cylindrical lens Laser alignment system Patent #: 4889425 InventorApplicationNo. 419280 filed on 10/10/1989US Classes:356/141.5, With at least 2-dimensional sensitivity356/3.14, Using at least a pair of viewing axes356/147Measurement in two planes (e.g., azimuth and elevation; hour angle and declination)ExaminersPrimary: Tarcza, Thomas H.Assistant: Wallace, Linda J. International ClassG01C 001/00AbstractThree linear direction measurement sensors mounted adjacent to one another comprise a device for simultaneously measuring the directions of a plurality of optical targets. Four linear direction sensors distributed over at least two locations comprise a device for simultaneously measuring the three-dimensional positions of a plurality of optical targets.Other References
Field of SearchMeasurement in two planes (e.g., azimuth and elevation; hour angle and declination)Alignment of axes nominally coaxial By fiber or waveguide interferometer (e.g., Sagnac effect) Following a target (e.g., a star or instrument pointer or other object) other than a pattern Target illuminated by artificial light source Self-luminous target | |
