Calibrating sensor alignment with applied bending moment

On a wearable display device comprising a frame, a first sensor and a second sensor spatially distributed on the frame, and one or more displays supported by the frame, a method of calibrating an alignment between the first sensor and the second sensor, the method comprising:

• during device manufacturing, bending the frame to place the frame in a bent configuration to the frame, the bent configuration corresponding to a bending moment that would result from the device being worn on a head within an intended range of head widths;
• while the frame is in the bent configuration, determining a determined alignment between the first sensor and the second sensor in the bent configuration;
• and
• storing calibration data in memory on the wearable display device based upon the determined alignment.

On a wearable display device comprising a frame, a first camera and a second camera spatially distributed on the frame, one or more displays supported by the frame, and a storage system comprising calibration data related to a determined alignment between the first camera and the second camera with the frame in a bent configuration, a method comprising:

• obtaining a first image of an environment from the first camera and obtaining a second image of the environment from the second camera;
• using the calibration data, determining a distance from the wearable display device to a feature captured in the first image and the second image, wherein using the calibration data comprises using calibration data that was determined during manufacturing of the wearable display device and for which the bent configuration corresponds to a bending moment that would result from the device being worn on a head within an intended range of head widths;
• obtaining a stereo image to display based upon the distance from the wearable display device to the feature;
• and
• outputting the stereo image via the one or more displays.