Abstract: A head mounted display and a blood sugar level management method are employed to provide effective dietary guidance for suppressing the blood sugar level to within a certain range. In order to achieve the aforementioned purpose, a head mounted display displays AR objects in a real space is provided, wherein: the head mounted display includes a camera that acquires a captured image by capturing an image of the real space, a blood sugar level sensor that measures the blood sugar level, and a control device. The control device determines, from information about a real food obtained from the captured image and information obtained from the blood sugar level sensor, the amount eaten in one bite and the time interval until the next bite is eaten; and the amount eaten in one bite and the time interval until the next bite is eaten are displayed as the AR objects.

Abstract: In a cooperative display system that connects a portable terminal and a head mounted display to display information in cooperation, the portable terminal displays information on a first display, and transmits at least a part of the information that is displayed to the head mounted display, and the head mounted display shares and displays the information transmitted from the portable terminal on a second display. Here, the information displayed on the portable terminal is hierarchical information, and the information displayed on the head mounted display is lower-level information in the hierarchical information. In addition, whether a user is stationary or moving is detected by a sensor of the portable terminal, and in a case where the user is stationary, the display of the information on the portable terminal is stopped, and the information is displayed only on the head mounted display.

Abstract: An HMD includes: a camera configured to image an external landscape; a camera abnormality detector configured to detect operation abnormality of the camera; a sensor group configured to detect a position, a distance, and the like of an object within the external landscape; a sensor abnormality detector configured to detect operation abnormality of the sensor group; an image generator configured to generate an image; and a mode switcher configured to switch a processing mode of the image generator. The image generator has an AR advanced processing mode of generating a high-accuracy AR advanced image by using image data captured by the camera and detection data detected by the sensor group, and an AR simple processing mode of generating AR simple image simpler than the AR advanced image. When an operation of the camera or the sensor group is abnormal, the mode switcher switches into the AR simple processing mode.