US 11,668,945 B2
Head-mounted display
Yasutoshi Yamamoto, Osaka (JP); Toshihiro Sakatsume, Kanagawa (JP); and Hiroyasu Makino, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/269,782
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
PCT Filed Feb. 27, 2020, PCT No. PCT/JP2020/008121
§ 371(c)(1), (2) Date Feb. 19, 2021,
PCT Pub. No. WO2020/195521, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. JP2019-061678 (JP), filed on Mar. 27, 2019.
Prior Publication US 2021/0318545 A1, Oct. 14, 2021
Int. Cl. G02B 27/00 (2006.01); G02B 27/01 (2006.01)
CPC G02B 27/0176 (2013.01) [G02B 2027/0154 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A head mounted display comprising:
a headgear having an attachment that comes into close contact with a face of a user in a manner such that the user can see at least a front and a fixture that is attached to the attachment and is used for fixing the attachment to a head of the user while maintaining close contact with the face of the user;
a display unit that has a video display unit configured to display video and is detachable from the attachment;
a lock mechanism that is provided in at least one of the attachment or the display unit, and fixes the display unit to the attachment in a manner such that fixing can be released; and
a notification unit that provides notification of completion of fixing the display unit to the attachment by the lock mechanism,
wherein the attachment and the display unit are configured to engage with each other in a front-rear direction of the user,
wherein the notification unit is positioned on the display unit such that the notification unit is invisible to the user wearing the head mounted display and notifies a third party other than the user wearing the head mounted display, and
wherein the notification unit is a light emitting unit emitting light indicating the completion of fixing the display unit to the attachment by the lock mechanism.