Raster scanned projector with microelectromechanical system scanner
AssigneeMagic Leap, Inc.
InventorCharles David Melville
Life of this patent
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Abstract
An optical scanner is described and includes an optical beam assembly and a transducer. The optical beam assembly includes a pivoting portion having a cantilevered beam; a stationary portion; a first torsional flexure coupling a first side of the pivoting portion to the stationary portion; and a second torsional flexure coupling a second side of the pivoting portion to the stationary portion. The transducer includes a first magnetic element disposed on the pivoting portion and a second magnetic element disposed on the stationary portion. The first and second magnetic elements are configured to generate magnetic fields that interact to rotate the pivoting portion relative to the stationary portion about an axis defined by the first and second torsional flexures.
Claims20
An optical scanner comprising:
- a cantilevered beam assembly, comprising:
- a stationary portion;
- a pivoting portion comprising a cantilevered beam dimensioned to resonate in a bend mode in a plane at a first frequency;
- at least one torsional flexure coupling the pivoting portion to the stationary portion, the at least one torsional flexure being configured to allow the pivoting portion to rotate about an axis defined by the at least one torsional flexure;
- and
- a transducer for maneuvering the cantilevered beam in a scan pattern.
An optical scanner, comprising:
- a cantilevered beam assembly, comprising:
- a pivoting portion comprising a cantilevered beam;
- a stationary portion;
- a first torsional flexure coupling a first side of the pivoting portion to the stationary portion;
- and
- a second torsional flexure coupling a second side of the pivoting portion to the stationary portion;
- and
- a transducer comprising a first magnetic element disposed on the pivoting portion and a second magnetic element disposed on the stationary portion, the first and second magnetic elements being configured to generate magnetic fields that interact to rotate the pivoting portion relative to the stationary portion about an axis defined by the first and second torsional flexures.
An optical scanner, comprising:
- a cantilevered beam assembly, comprising:
- a stationary portion;
- a pivoting portion comprising a cantilevered beam dimensioned to resonate in a bend mode in a plane at a first frequency;
- at least one torsional flexure coupling the pivoting portion to the stationary portion, the at least one torsional flexure being configured to allow the cantilevered beam to rotate about an axis defined by the at least one torsional flexure;
- a transducer for maneuvering the cantilevered beam in a scan pattern;
- a first optical fiber and a first waveguide configured to deliver light from the first optical fiber to a distal end of the cantilevered beam;
- and
- a second optical fiber and a second waveguide configured to deliver light from the second optical fiber to the distal end of the cantilevered beam.
Dependencies are inferred from the claim text.