Compensation for deformation in head mounted display systems

A computer-implemented method comprising:

• maintaining first data for a first target image associated with an undeformed state of a first eyepiece of a head-mounted display device and second data for a first image for presentation by a first projector that is i) included in and optically coupled to the first eyepiece and ii) part of the head-mounted display device;
• receiving, from a first temperature sensor that is coupled to the first projector of the first eyepiece and is part of the head-mounted display device, a first temperature measurement of the first projector;
• determining a first transformation that maps the first image to the first target image and that accounts for a position of the first projector with respect to the first eyepiece using, at least in part, the first temperature measurement of the first projector;
• and
• applying the first transformation to a subsequent image for presentation, by the first projector, onto the first eyepiece of the head-mounted display device.

A head-mounted display device comprising:

• a wearable frame;
• a first eyepiece elastically mounted to the wearable frame, the first eyepiece comprising a first projector rigidly and optically coupled to the first eyepiece, the first projector being configured to emit light to the first eyepiece;
• a first temperature sensor elastically mounted to the wearable frame and configured to capture a temperature of the first eyepiece;
• one or more processors and one or more storage devices on which are stored instructions that are operable, when executed by the one or more processors, to cause the one or more processors to perform operations comprising:
• maintaining first data for a first target image associated with an undeformed state of the first eyepiece and second data for a first image for presentation by the first projector;
• receiving, from the first temperature sensor, a first temperature measurement of the first projector;
• determining a first transformation that maps the first image to the first target image and that accounts for a position of the first projector with respect to the first eyepiece using, at least in part, the first temperature measurement of the first projector;
• and
• applying the first transformation to a subsequent image for presentation, by the first projector, onto the first eyepiece of the head-mounted display device.

A non-transitory computer storage medium encoded with instructions that, when executed by one or more computers, cause the one or more computers to perform operations comprising:

• maintaining first data for a first target image associated with an undeformed state of a first eyepiece of a head-mounted display device and second data for a first image for presentation by a first projector that is i) included in and optically coupled to the first eyepiece and ii) part of the head-mounted display device;
• receiving, from a first temperature sensor that is coupled to the first projector of the first eyepiece and is part of the head-mounted display device, a first temperature measurement of the first projector;
• determining a first transformation that maps the first image to the first target image and that accounts for a position of the first projector with respect to the first eyepiece using, at least in part, the first temperature measurement of the first projector;
• and
• applying the first transformation to a subsequent image for presentation, by the first projector, onto the first eyepiece of the head-mounted display device.