Head-mounted display systems with power saving functionality

A head-mounted display system configured to project light to an eye of a user to display augmented reality image content in a vision field of said user, said head-mounted display system comprising:

• a frame configured to be supported on a head of the user in an upright position;
• a head-mounted display disposed on the frame, said display configured to project light into said user's eye to display augmented reality image content to the user's vision field, at least a portion of said display being transparent and disposed at a location in front of the user's eye when the user wears the frame in the upright position such that said transparent portion transmits light from a portion of the environment in front of the user and said head-mounted display to the user's eye to provide a view of said portion of the environment in front of the user and said head-mounted display;
• one or more sensors that comprise an inward-facing imaging system and/or an outward-facing imaging system;
• and
• processing electronics in communication with the display and the one or more sensors, the processing electronics configured to:
• receive a signal from the one or more sensors;
• determine whether the frame is in the upside-down position by:
• receiving images from the inward-facing imaging system and/or the outward-facing imaging system;
• and
• analyzing the images to determine whether the frame has been flipped over with respect to the upright position, wherein the frame is in the upside-down position if the images comprise image content oriented as if the frame has been flipped over with respect to the upright position;
• and
• cause the head-mounted display system to reduce power of one or more components of the head-mounted display system in response to at least in part on a determination that the frame is in the upside-down position.

A head-mounted display system configured to project light to an eye of a user to display augmented reality image content in a vision field of said user, said head-mounted display system comprising:

• a frame configured to be supported on a head of the user in an upright position;
• a head-mounted display disposed on the frame, said display configured to project light into said user's eye to display augmented reality image content to the user's vision field, at least a portion of said display being transparent and disposed at a location in front of the user's eye when the user wears the frame in the upright position such that said transparent portion transmits light from a portion of the environment in front of the user and said head-mounted display to the user's eye to provide a view of said portion of the environment in front of the user and said head-mounted display;
• one or more sensors that comprise one or more pressure sensors configured to sense pressure exerted on at least a portion of a top edge of the frame by a support surface as the frame is positioned in an upside-down position on the support surface;
• and
• processing electronics in communication with the display and the one or more sensors, the processing electronics configured to:
• receive a signal from the one or more pressure sensors;
• determine whether the frame is in the upside-down position on the support surface based at least in part on the signal received from the one or more pressure sensors by sensing the pressure exerted by the support surface on the at least a portion of the top edge of the frame;
• and
• cause the head-mounted display system to reduce power of one or more components of the head-mounted display system in response to at least in part on a determination that the frame is in the upside-down position.

A head-mounted display system configured to project light to an eye of a user to display augmented reality image content in a vision field of said user, said head-mounted display system comprising:

• a frame configured to be supported on a head of the user in an upright position;
• a head-mounted display disposed on the frame, said display configured to project light into said user's eye to display augmented reality image content to the user's vision field, at least a portion of said display being transparent and disposed at a location in front of the user's eye when the user wears the frame in the upright position such that said transparent portion transmits light from a portion of the environment in front of the user and said head-mounted display to the user's eye to provide a view of said portion of the environment in front of the user and said head-mounted display;
• one or more sensors;
• and
• processing electronics in communication with the display and the one or more sensors, the processing electronics configured to:
• receive a signal from the one or more sensors;
• determine whether the frame is in an upside-down position based at least in part on the signal received from the one or more sensors;
• cause the head-mounted display system to reduce power of one or more components of the head-mounted display system in response to at least in part on a determination that the frame is in the upside-down position;
• and
• cause the display system to increase the power of the one or more components in response to at least in part on a determination that the frame is no longer in the upside-down position by determining that the frame is supported on the head of the user such that said display is configured to project light into said user's eye to display augmented reality image content to the user's vision field.

A head-mounted display system configured to project light to an eye of a user to display augmented reality image content in a vision field of said user, said head-mounted display system comprising:

• a frame configured to be supported on a head of the user in an upright position;
• a head-mounted display disposed on the frame, said display configured to project light into said user's eye to display augmented reality image content to the user's vision field, at least a portion of said display being transparent and disposed at a location in front of the user's eye when the user wears the frame in the upright position such that said transparent portion transmits light from a portion of the environment in front of the user and said head-mounted display to the user's eye to provide a view of said portion of the environment in front of the user and said head-mounted display;
• one or more sensors that comprise one or more proximity sensors configured to sense the frame approach or contact a support surface as the frame is positioned in an upside-down position on the support surface;
• and
• processing electronics in communication with the display and the one or more sensors, the processing electronics configured to:
• receive a signal from the one or more proximity sensors;
• determine whether the frame is in the upside-down position based at least in part on the signal received from the one or more proximity sensors by sensing the frame approach or contact the support surface using the one or more proximity sensors;
• and
• cause the head-mounted display system to reduce power of one or more components of the head-mounted display system in response to at least in part on a determination that the frame is in the upside-down position.

A head-mounted display system configured to project light to an eye of a user to display augmented reality image content in a vision field of said user, said head-mounted display system comprising:

• a frame configured to be supported on a head of the user in an upright position;
• a head-mounted display disposed on the frame, said display configured to project light into said user's eye to display augmented reality image content to the user's vision field, at least a portion of said display being transparent and disposed at a location in front of the user's eye when the user wears the frame in the upright position such that said transparent portion transmits light from a portion of the environment in front of the user and said head-mounted display to the user's eye to provide a view of said portion of the environment in front of the user and said head-mounted display;
• one or more sensors comprise one or more light sensors configured to sense the frame approach or contact a support surface as the frame is positioned in an upside-down position on the support surface;
• and
• processing electronics in communication with the display and the one or more sensors, the processing electronics configured to:
• receive a signal from the one or more light sensors;
• determine whether the frame is in the upside-down position based at least in part on the signal received from the one or more light sensors by sensing the frame approach or contact the support surface using the one or more light sensors;
• and
• cause the head-mounted display system to reduce power of one or more components of the head-mounted display system in response to at least in part on a determination that the frame is in the upside-down position.