Laser doppler velocimeter
Patent 5272513 Issued on December 21, 1993. Estimated Expiration Date: 
December 6, 2011. 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.
December 6, 2011. 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 3915572 Erbium laser ceilometer Eye-safe laser cloud height rangefinder Pulsed laser radar apparatus Pulsed coherent Doppler laser radar Optical equipment of fiber laser Doppler velocimeter Patent #: 5013928 InventorsAssigneeApplicationNo. 804888 filed on 12/06/1991US Classes:356/28.5, Of light interference (e.g., interferometer)356/28With light detector (e.g., photocell)ExaminersPrimary: Hellner, MarkInternational ClassG01S 003/08AbstractA laser Doppler velocimeter is formed using erbium-doped fiber as the lasing medium. Within the velocimeter, all optical signals, transmitted and received, are handled by optical fibers. A telescope with a single optical fiber input/output interface acts as both the transmission device to focus the radiation at a specified point, and as the receiving system for collecting reflected radiation. The portion of the reflected radiation collected by the receiving system is analyzed to determine the Doppler shift caused by targets at the focal point of the telescope. | |
