US 11,683,457 B2
Optical device and image display device
Yoshiyuki Yanagisawa, Matsumoto (JP); Masatoshi Ito, Matsumoto (JP); and Shinichi Wakabayashi, Suwa (JP)
Assigned to Seiko Epson Corportation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Oct. 22, 2021, as Appl. No. 17/507,905.
Claims priority of application No. JP2020-178016 (JP), filed on Oct. 23, 2020.
Prior Publication US 2022/0132084 A1, Apr. 28, 2022
Int. Cl. H04N 9/31 (2006.01); G02B 26/08 (2006.01)
CPC H04N 9/3152 (2013.01) [G02B 26/0875 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical device comprising:
an optical device including an optical member having a plane of incidence which light enters, a movable frame configured to hold the optical member, and a coupling frame to be coupled to the movable frame via an oscillation axis; and
a stationary frame to which the coupling frame in the optical device is fixed via a vibration absorbing member, wherein
the stationary frame has a shaft part to which the vibration absorbing member is attached, and a first surface and a second surface opposed to each other outside the shaft part,
the coupling frame is disposed so as to be separated from the shaft part, the first surface, and the second surface with the vibration absorbing member, and
at least one of a thickness of the vibration absorbing member existing between the coupling frame and the first surface in the stationary frame and a thickness of the vibration absorbing member existing between the coupling frame and the second surface in the stationary frame is thicker than a thickness of the vibration absorbing member existing between the coupling frame and the shaft part of the stationary frame.