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US 4,394,060 AGranted
Light beam scanning system with saw transducer
AssigneeCanon Kabushiki Kaisha
InventorsCarl M. Verber, Richard P. Kenan, Richard Ridgway
Life of this patent
Estimating the term…
Abstract
A very compact light beam scanning system is provided by utilizing the optical integrated circuit technique. A Luneburg lens of As.sub.2 S.sub.3 and a SAW transducer device are provided on a waveguide and a wideband heterodyning RF oscillator including two varactor tuned oscillators and a digital linearization circuit are provided as the drive circuit for the transducer device.
Claims10
A light beam scanning system comprising:
- an optical waveguide;
- SAW transducer means for generating surface acoustic waves in said waveguide;
- and
- driving means for driving said SAW transducer means, said driving means comprising a heterodyning RF sweep generator having a varactor tuned oscillator and a constant frequency oscillator.
1 more element
A light beam scanning system comprising:
- an optical waveguide;
- SAW transducer means for generating surface acoustic waves in said waveguide;
- and
- driving means for driving said SAW transducer means, said driving means comprising a varactor tuned oscillator and a digital linearization circuit for compensating for the non-linearity of the frequency of said varactor tuned oscillator.
1 more element
A light beam scanning system comprising:
- an optical waveguide;
- a Luneburg lens comprising As.sub.2 S.sub.3 provided on said waveguide;
- SAW transducer means for generating surface acoustic waves in said waveguide;
- and
- driving means for driving said SAW transducer means with a linear chirp signal.
2 more elements
Dependencies are inferred from the claim text.