US 11,656,461 B2
Head-mounted display device with adjuster
Aino Hasegawa, Kanagawa (JP); Shigenobu Hirano, Kanagawa (JP); Yasuo Katano, Kanagawa (JP); Kenji Kameyama, Kanagawa (JP); Norikazu Igarashi, Kanagawa (JP); Naoki Nakamura, Saitama (JP); Yoshifumi Sudoh, Kanagawa (JP); Masahiro Itoh, Kanagawa (JP); Shun Okazaki, Kanagawa (JP); and Susumu Momma, Kanagawa (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Filed by Ricoh Company, Ltd., Tokyo (JP)
Filed on Nov. 17, 2020, as Appl. No. 16/950,365.
Claims priority of application No. JP2019-217586 (JP), filed on Nov. 29, 2019.
Prior Publication US 2021/0165221 A1, Jun. 3, 2021
Int. Cl. G02B 27/01 (2006.01); G02B 27/64 (2006.01); G02B 6/42 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/4204 (2013.01); G02B 27/0176 (2013.01); G02B 27/642 (2013.01); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A head-mounted display device comprising:
a display located within each of temples at left and right temporal regions of a wearer respectively to display an image;
a light guider located within each of rims respectively to emit the image displayed on the display to an eye of the wearer, the light guider including a first reflecting plate and a second reflecting plate, the first reflecting plate located at one end of each of the rims to guide an image light in a direction toward a bridge between the rims and the second reflecting plate located at the other end of each of the rims to reflect the image light toward the eye of the wearer;
a relay optical structure disposed between the display and the light guider to guide the image light from the display to the light guider;
an adjustable optical structure disposed between the relay optical structure and the light guider to convert the image light to a parallel light, the adjustable optical structure including a collimator lens;
wherein an intermediate image is formed based on the image light from the relay optical structure, and is incident on the collimator lens;
a housing including an optical system, the optical system located within each of the temples at the left and right temporal regions of the wearer respectively to guide the image light of the image displayed on the display to the light guider, the optical system including an image rotation optical structure, the relay optical structure, and the adjustable optical structure; and
an adjuster provided in the bridge on a side of the light guider opposite to the optical system to bend the housing on a side opposite to a face of the wearer,
wherein the adjuster comprises a torsion spring or a rubber member, and a length of an optical path between the display and the second reflecting plate remains constant when the adjuster is deformed.