Apple Inc.

Tahereh Majdi

Sheng Zhang

Jin Li

Tong Zhu

Giovanni Carbone

Shengchang Cai

William W Sprague

Guanjun Tan

Lingyu Zhu

Duncan A K Mcroberts

Milad Akhlaghi Bouzan

Anup Rathi

Aditi G Kanhere

Youngbae Son

Kyu Hyun Kim

Sijia Ma

An electronic device may have a display panel. Light from the display panel may be focused by a lens assembly towards a viewer. Optical crosstalk, off-axis color shift, and/or the presence of the lens assembly may cause color non-uniformity in images viewed through the lens assembly. To obtain color calibration information, first information may be used to simulate the color of the display panel when viewed through a lens assembly from a first number of points. The first information may include an average display panel color emission profile and a map of correlation between pixel locations and incident angles and corresponding pupil locations and gaze directions. The color of the display panel through the lens assembly may be measured at the first number of points to extract a lens non-uniformity contribution. The lens non-uniformity contribution may then be used to simulate color at a second, larger number of points.

Method of obtaining color calibration information for an electronic device

An electronic device may have a display panel with an array of display pixels. Light from the display panel may be focused by a lens assembly towards a viewer. The presence of the lens assembly may cause geometric distortion for a viewer viewing images on the display through the lens assembly. To mitigate geometric distortion, geometric distortion compensation may be performed in the electronic device. The electronic device may include both a fixed lens element and a removable lens element in the lens assembly. The removable lens element may be changed, allowing the distortion function associated with the lens assembly to change over time. To dynamically compensate for geometric distortion caused by a lens assembly with a removable lens, ray tracing may be used to determine the geometric distortion caused by the lens assembly depending upon the particular removable lens that is present in the lens assembly.

Electronic device display having distortion compensation

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Sunnyvale, CA, United States of America

Tahereh Majdi