Hybrid catadioptric system for advanced optical cavity velocimetry
First Claim
1. An optic probe for projecting light rays comprisinga housing defining an interior space between a proximate end and a distal end;
- one or more optic signal conductors entering the housing through the proximate end and terminating within the interior space of the housing, the one or more optic signal conductors configured to provide optic signals to the probe;
a reflector having an open distal end and a reflective interior surface;
a first set of lens configured to receive the optic signals and present a first subset of optic signals to at least one second lens and present a second subset of optic signal to the reflector;
one or more additional lenses adjacent the first lens configured to direct the first subset of optic signals through the open distal end of the reflector, wherein the second set of optic signals bypass the one or more additional lenses to reflect from the reflective interior surface of reflector and out the open second end of the reflector.
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Accused Products
Abstract
A probe including reflector is disclosed to measure the velocity distribution of a moving surface along many lines of sight. Laser light, directed to the surface by the probe and then reflected back from the surface, is Doppler shifted by the moving surface, collected into probe, and then directed to detection equipment through optic fibers. The received light is mixed with reference laser light and using photonic Doppler velocimetry, a continuous time record of the surface movement is obtained. An array of single-mode optical fibers provides an optic signal to one or more lens groups and a reflector, such as a parabolic reflector having a mirrored interior surface.
25 Citations
20 Claims
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1. An optic probe for projecting light rays comprising
a housing defining an interior space between a proximate end and a distal end; -
one or more optic signal conductors entering the housing through the proximate end and terminating within the interior space of the housing, the one or more optic signal conductors configured to provide optic signals to the probe; a reflector having an open distal end and a reflective interior surface; a first set of lens configured to receive the optic signals and present a first subset of optic signals to at least one second lens and present a second subset of optic signal to the reflector; one or more additional lenses adjacent the first lens configured to direct the first subset of optic signals through the open distal end of the reflector, wherein the second set of optic signals bypass the one or more additional lenses to reflect from the reflective interior surface of reflector and out the open second end of the reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An optic lens system for projecting light rays comprising
a housing defining an interior space between a first end and a second end; -
one or more optic signal conductors configured to carry optic signals, the optic signal comprising a first set of optic signals and a second set of optic signals; one or more lenses configured to receive at least the first set of optic signals from the one or more optic signal conductors; a reflector having an open first end and an open second end with a surface extending between the open first end and the open second end and an interior of the surface being reflective, the reflector configured to receive at least the second set of optic signals and reflect the second set of optic signals through the second open end of the reflector at a first angle; wherein the one or more lenses are configured to project at least the first set of optic signals through the open second end at a second angle, the second angle being different from the first angle. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method, during photonic Doppler velocimetry, for presenting an optic signal to a curved surface and receiving a reflection from the curved surface during movement of the curved surface comprising:
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establishing a distal end of a probe facing the curved surface, the probe having a proximate end and distal end including at least one lens and a reflector, the reflector having an open distal end which faces the surface; generating optic signals; presenting the optic signals to an optic signal conductor, passing the optic signal through the optic signal conductor to the at least one lens, the at least one lens separating the optic signals into a first set of optic signals and a second set of optic signals; reflecting the second set of optic signals from an interior surface of a reflector, the reflecting having a reflective interior surface, the reflected second set of optic signals passing through the open distal end of the reflector toward the surface; passing the first set of optic signals through the open distal end of the reflector toward the surface; initiating movement of the curved surface; receiving one or more surface reflections of the first set of optic signals and the second set of optic signals through the open distal end of the reflector, the surface reflections being reflected from the curved surface; passing the one or more surface reflections through at least one lens to the optic signal conductor. - View Dependent Claims (17, 18, 19, 20)
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Specification