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US 8,218,014 B2Granted
Electromagnetic scanner having variable coil width
AssigneeMicrovision, Inc.
InventorsJason B. Tauscher, Dean R. Brown, Matthew Ellis, Wyatt O. Davis, Mark P. Helsel
Life of this patent
Estimating the term…
Abstract
Briefly, in accordance with one or more embodiments, a scanner for a scanned beam display may comprise a scanning platform having a mirror disposed thereon to reflect a beam of light impinging on the mirror, a drive coil disposed on the scanning platform to scan the reflected beam of light in response to a drive current applied to the drive coil. The drive coil has coil winding segments having a narrower width in one or more regions of the drive coil, and has coil winding segments having a greater width in one or more other regions of the drive coil to provide a the drive coil with a reduced electrical resistance.
Claims11
An apparatus, comprising:
- a scanning platform having a mirror disposed thereon to reflect a beam of light impinging on the mirror;
- a drive coil disposed on the scanning platform to scan the reflected beam of light in response to a drive current applied to the drive coil;
- and
- wherein the drive coil has coil windings having a narrower width in one or more regions of the drive coil, and has coil windings having a greater width in one or more other regions of the drive coil to provide the drive coil with a reduced electrical resistance, wherein the drive coil has a first number of coil winding segments on a first side of the drive coil, and the drive coil has a second number of coil winding segments on a second side of the drive coil, the second number being greater than the first number such that there is an increased mass on the second side due to the greater number of coil winding segments, and the coil winding segments on the first side having a greater width than a width of the coil winding segments on the second side such that the there is an increased mass on the first side due to the greater width of the coil winding segments that matches or nearly matches the increased mass on the second side.
1 more element
A scanned laser display, comprising:
- a laser source to provide a laser beam as an output;
- a scanning platform having a mirror disposed thereon to reflect the laser beam impinging on the mirror;
- a drive coil disposed on the scanning platform to scan the reflected beam of light in response to a drive current applied to the drive coil;
- and
- a controller to control the drive current applied to the drive coil;
- wherein the drive coil has coil winding segments having a narrower width in one or more regions of the drive coil, and has coil winding segments having a greater width in one or more other regions of the drive coil to provide the drive coil with a reduced electrical resistance, wherein the drive coil has a first number of coil winding segments on a first side of the drive coil, and the drive coil has a second number of coil winding segments on a second side of the drive coil, the second number being greater than the first number such that there is an increased mass on the second side due to the greater number of coil winding segments, and the coil winding segments on the first side having a greater width than a width of the coil winding segments on the second side such that the there is an increased mass on the first side due to the greater width of the coil winding segments that matches or nearly matches the increased mass on the second side.
3 more elements
An information handling system, comprising:
- a graphics circuit to provide a video image output;
- a laser source to provide a laser beam output in response to the video image output;
- a scanning platform having a mirror disposed thereon to reflect the laser beam impinging on the mirror;
- a drive coil disposed on the scanning platform to scan the reflected beam of light in response to a drive current applied to the drive coil;
- and
- a controller to control the drive current applied to the drive coil in response to the video image output;
- wherein the drive coil has coil winding segments having a narrower width in one or more regions of the drive coil, and has coil winding segments having a greater width in one or more other regions of the drive coil to provide the drive coil with a reduced electrical resistance, wherein the drive coil has a first number of coil winding segments on a first side of the drive coil, and the drive coil has a second number of coil winding segments on a second side of the drive coil, the second number being greater than the first number such that there is an increased mass on the second side due to the greater number of coil winding segments, and the coil winding segments on the first side having a greater width than a width of the coil winding segments on the second side such that the there is an increased mass on the first side due to the greater width of the coil winding segments that matches or nearly matches the increased mass on the second side.
4 more elements
Dependencies are inferred from the claim text.