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US 5,200,606 AGranted
Laser radar scanning system
AssigneeLTV Missiles and Electronics Group
InventorsNicholas J. Krasutsky, Lewis G. Minor, Edward M. Flowers
Life of this patent
Estimating the term…
Abstract
An apertured mirror permits an outgoing, transmitted laser beam to pass and reflects a return, reflected beam onto a detector array.
Claims14
Apparatus for splitting reflected light from transmitted light, comprising:
- an optical system operable to transmit a first, diverging beam of light along a first axis and to receive a second, reflected beam coaxial with the first beam, the second beam having greater cross-sectional area than the first beam, said optical system including
- a splitter mirror lying in a plane at an angle to the first axial and having an off-center aperture coaxial with the first beam, the aperture being smaller in area than the second beam, and the mirror being sized to reflect a substantial portion of the second beam.
A laser scanning system, comprising:
- a. a laser light source operable to emit a laser beam along a first optical path;
- b. a turning mirror being positioned to redirect the laser beam along a second optical path;
- c. a mirror having an aperture therein, the aperture being off-center and located in the second optical path such that the redirected laser beam passes therethrough;
- and
- d. a scanning mirror being positioned in the second optical path to scan the redirected laser beam passing through said aperture along a third optical path.
2 more elements
A method of transmitting and receiving laser light comprising the steps of:
- a. generating a laser beam;
- b. passing the laser beam through an off-center aperture in a receiving mirror;
- c. scanning the laser beam in a scan pattern to reflect the beam off a target;
- d. receiving light of the laser beam reflected from the target;
- and
- e. reflecting the received light off the receiving mirror.
3 more elements
A laser scanning system comprising:
- a laser light source operable to emit a laser beam;
- a mirror having an aperture therein, the aperture being off-center with respect to said mirror and being positioned to pass said laser beam therethrough;
- a scanning device being positioned to receive said laser beam passing through said aperture, said scanning device redirecting said laser beam along a predetermined path;
- and
- an afocal Cassegrainian telescope being positioned to receive said redirected laser beam from said scanning device, said telescope transmitting said laser beam toward a target and receiving reflections of said transmitted laser beam from said target.
2 more elements
Dependencies are inferred from the claim text.