Back to results
US 2010/0060863 A1Published application
Distortion Altering Optics for MEMS Scanning Display Systems or the Like
AssigneeMicrovision, Inc.
InventorsJoshua M. Hudman, Joshua O. Miller
Life of this patent
Estimating the term…
Abstract
Briefly, in accordance with one or more embodiments, a wedge is disposed after the MEMS scanner in a MEMS scanning display system which redirects the scan cone at the same time stretches and/or squashes the image to reduce or eliminate distortion inherent in scanning projectors, the distortion being a result of a trajectory of the scanned beam caused by the off axis input beam and a transform from a scanning mirror to an image plane.
Claims20
An apparatus, comprising:
- a scanning platform capable of scanning an input beam fed off axis to the scanning platform to provide a scanned beam output to display a projected image;
- and
- a optic element capable of altering distortion of the projected image along at least one or more axes, the distortion being a result of a trajectory of the scanned beam caused by the off axis input beam and a transform from a scanning mirror to an image plane.
A scanned beam display, comprising:
- a light source capable of generating a light beam as an input beam for scanning;
- a scanning platform capable of scanning an input beam fed off axis to the scanning platform to provide a scanned beam output to display a projected image;
- a display controller to control the scanning platform and the light source to generate the projected image in response to scanning action of the scanning platform and modulation of the light source;
- and
- a wedge optic capable of altering distortion of the projected image, the distortion being a result of a trajectory of the scanned beam caused by the off axis input beam and a transform from a scanning mirror to an image plane, the wedge optic comprising a first surface and a second surface disposed at a non-parallel angle with respect to the first surface.
2 more elements
A method to alter remapping distortion in a scanned beam display, the method comprising:
- feeding an input beam to be scanned off axis to a scanning platform to generate an output beam in a scan pattern representing a projected image;
- and
- redirecting the input beam, or the output beam, or combinations thereof, using a wedge optic to alter remapping distortion of the projected image, the distortion being a result of a trajectory of the scanned beam caused by the off axis input beam and a transform from a scanning mirror to an image plane.
Dependencies are inferred from the claim text.