Granted Patent B2

US 12,287,189 · App. 18/400,476 · Granted Apr 29, 2025

Inventors: Ivan Li Chuen Yeoh (Wesley Chapel, FL); Lionel Ernest Edwin (Hollywood, FL); Samuel A. Miller (Hollywood, FL)

Assignee: Magic Leap, Inc.

G01B11/14G01B11/22G02B27/01G02B27/017G06F3/013G06T15/20G06T19/006G09G3/003G09G3/006G09G5/02H04N13/144H04N13/327H04N13/344H04N13/383H04N13/398G02B2027/011G02B2027/0178G06F2203/011G06T3/20G06T3/40G06T3/60G06T2207/10012G06T2207/10052G09G3/2092G09G3/3406G09G2320/0233G09G2320/0242G09G2320/0276G09G2320/028G09G2320/029G09G2320/0626G09G2320/0666G09G2320/0673G09G2320/0693G09G2340/0464G09G2360/16H04N13/395

Abstract

Claims (17)

1. An optical metrology system for image correction of a display, the system comprising:

at least one camera configured to capture one or more images of virtual content being projected by the display, wherein the display is configured to present the virtual content at a plurality of depth planes; and

a hardware processor programmed with executable instructions to:

access the one or more images captured by the at least one camera;

determine, based at least partly on the one or more images, at least one value indicating a luminance of each of a plurality of points on the display;

calculate, based at least partly on said determined values, at least one correction for the display, wherein the at least one correction includes a chromatic balancing correction; and

store the at least one correction in memory that is associated with the display,

wherein the display comprises a plurality of display layers, and

wherein to calculate the chromatic balancing correction, the hardware processor is programmed to:

identify a color cluster associated with at least one of the plurality of display layers, the color cluster comprising at least one additional display layer;

for different points of the at least one display layer, compare the value associated with luminance corresponding to the point on the at least one display layer with a value associated with luminance corresponding to the point on the at least one additional display layer; and

calculate an amount that lowers different values associated with luminance of the at least one display layer to a lower value associated with its corresponding point of the at least one additional layer.

2. The optical metrology system of claim 1 , wherein at least one of the display layers comprises a depth layer configured to present at least a portion of the virtual content at one of the plurality of depth planes.

3. The optical metrology system of claim 1 , wherein at least one of the display layers comprises a color layer configured to present at least a portion of the virtual content formed of light that is within a particular range of wavelengths.

4. The optical metrology system of claim 1 , wherein each of the display layers comprises one or more waveguides.

5. The optical metrology system of claim 1 , wherein the at least one camera comprises a light field camera or a digital camera having a small depth of focus.

6. The optical metrology system of claim 1 , wherein the virtual content comprises at least one of a checkerboard pattern, a geometric pattern, or a stochastic pattern.

Assignments (3)

Continuity (10)

References Cited (160)