US Patent 9921646 Head-mounted display device and method of controlling head-mounted display device

A transmissive head-mounted display device includes an image display unit, a detection unit, a control unit, an imaging unit, and an imaging setting unit. The display unit generates image light representing an image, allows a user to visually recognize the image light, and transmits outside scenery when worn on a head of a user. The detection unit detects a shielding object that is located at a predetermined distance from an eye of the user. A control unit performs control of the image light based on the detection result of the detection unit. The imaging unit images the outside scenery. The imaging setting unit adjusts the imaging unit. The imaging setting unit shifts a display mode of the image display unit to an imaging adjustment mode based on the detection result of the detection unit.