Methods and systems for implementing a high resolution color micro-display

• US 9,389,424 B1
• Filed: 04/02/2015
• Issued: 07/12/2016
• Est. Priority Date: 04/02/2014
• Status: Active Grant

• Current Assignee: Magic Leap, Inc.
• Original Assignee: Magic Leap, Inc.
• Inventors: Schowengerdt, Brian T.
• Primary Examiner(s): Natnael, Paulos M
• Application Number:
  US14/677,931
• Time in Patent Office: 467 Days
• Field of Search: 348/197
• US Class Current: 1/1
• CPC Class Codes: G02B 2006/0098 for scanning
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 26/103 having movable or deformable optical fibres, light guides or waveguides as scanning elements light guides per se G02B6/00
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 3/0056 arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085
• CPC Class Codes: G02B 6/08 with fibre bundle in form of plate
• CPC Class Codes: G02B 6/3504 Rotating, tilting or pivoting the waveguides, or with the waveguides describing a curved path rotary joint G02B6/3628
• CPC Class Codes: H04N 9/14 using optical-mechanical scanning means only
• CPC Class Codes: H04N 9/3129 scanning a light beam on the display screen scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026
• CPC Class Codes: H04N 9/3179 Video signal processing therefor

Abstract

The tiled array of fiber scanners includes multiple fiber scanners arranged in a polygonal pattern determined based on analysis results. Multiple fiber scanners generate multiple component images tiled to form a seamless overall image. A fiber scanner is devised through analysis and includes projector optics, a single-core or multi-core scan fiber disposed within an actuator tube coupled with the projector optics within a housing tube according to analysis results and one or more compensators.

Claims

1. A tiled array of fiber scanned displays, comprising:

a number of fiber scanners that are affixed in the tiled array in a polygonal pattern, wherein

each of the fiber scanners produces a component image;

a fiber scanner in the number of fiber scanners comprises;

projector optics disposed within a housing tube; and

a scan fiber disposed within a piezoelectric actuator tube, which is coupled with the projector optics, according to analysis results and one or more compensators; and

a number of component images are tiled together in a corresponding polygonal pattern derived from the polygonal pattern to produce an overall image that is visually seamless;

the overall image has a resolution of 5.24 mega-pixels with a pixel pitch of 3.66 μ

m and an aspect ratio of 5;

4; and

the tiled array has a dynamic range of 12-bit and produces the overall image at a refresh rate of 72 Hz.