# US 9,519,134 B2 · Optical device and image display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,519,134 B2 - Document ID: US9519134B2 - Status: Granted - Kind: B2 - Application number: 14/668,115 - Filed: 2015-03-25 - Published: 2015-10-01 - Granted: 2016-12-13 - Earliest claimed: 2014-03-27 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Makiko Hino - Web page: https://patentgrep.com/patent/US9519134B2 ## CPC - G02B 26/08: for controlling the direction of light (in light guides G02B6/35) - G02B 26/0816: {by means of one or more reflecting elements} - G02B 26/085: {the reflecting means being moved or deformed by electromagnetic means} - G02B 26/0875: {by means of one or more refracting elements} - G02B 26/10: Scanning systems - G02B 26/105: {with one or more pivoting mirrors or galvano-mirrors (G02B26/101 takes precedence)} - H04N 9/3129: {scanning a light beam on the display screen (scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161)} - H04N 9/3188: {Scale or resolution adjustment (scaling in general G06T3/40; resolution modifying circuits for displays in general G09G5/391)} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An optical device includes: an optical member which is formed of a plate-shaped part and on which light is incident; a frame so provided that the frame surrounds side surfaces of the optical member and made of an elastic material more elastic than the optical member; a shaft that supports the optical member and the frame in a swingable manner and is made of the elastic material; a support that supports the shaft; a first restricting member provided on a plate surface of the optical member; and a second restricting member that is provided in a position separate from the optical member and comes into contact with the first restricting member when the optical member and the frame swing. ## Claims ### Claim 1 An optical device comprising: an optical member which is formed of a plate-shaped part and on which light is incident; a frame so provided that the frame surrounds side surfaces of the optical member and made of an elastic material more elastic than the optical member; a shaft that supports the optical member and the frame in a swingable manner and is made of the elastic material; a support that supports the shaft; a first restricting member provided on a plate surface of the optical member; and a second restricting member that is provided in a position separate from the optical member and comes into contact with the first restricting member when the optical member and the frame swing. ### Claim 2 (depends on 1) The optical device according to claim 1, wherein the first restricting member is provided in a position where the first restricting member overlaps with both the optical member and the frame when viewed in a direction perpendicular to the plate surface. ### Claim 3 (depends on 2) An image display apparatus comprising the optical device according to claim 2. ### Claim 4 (depends on 1) The optical device according to claim 1, wherein the elastic material is a material primarily containing a resin. ### Claim 5 (depends on 4) An image display apparatus comprising the optical device according to claim 4. ### Claim 6 (depends on 1) The optical device according to claim 1, wherein magnetic force produced between the first restricting member and the second restricting member induces swing motion of the optical member and the frame. ### Claim 7 (depends on 6) An image display apparatus comprising the optical device according to claim 6. ### Claim 8 (depends on 6) The optical device according to claim 6, wherein the first restricting member includes a permanent magnet, and the second restricting member includes an electromagnet. ### Claim 9 (depends on 8) An image display apparatus comprising the optical device according to claim 8. ### Claim 10 (depends on 1) The optical device according to claim 1, wherein the optical member transmits light. ### Claim 11 (depends on 10) An image display apparatus comprising the optical device according to claim 10. ### Claim 12 (depends on 1) The optical device according to claim 1, wherein the optical member reflects light. ### Claim 13 (depends on 12) An image display apparatus comprising the optical device according to claim 12. ### Claim 14 (depends on 1) An image display apparatus comprising the optical device according to claim 1. ### Claim 15 (depends on 14) The image display apparatus according to claim 14, wherein the optical device changes the position of an optical path of light that exits out of the optical device so that the position of a pixel displayed when irradiated with the light is shifted. ### Claim 16 (depends on 14) The image display apparatus according to claim 14, wherein the optical device scans an object with the light to form an image. ### Claim 17 An optical device comprising: an optical member which is formed of a plate-shaped part and on which light is incident; a frame so provided that the frame surrounds side surfaces of the optical member and made of an elastic material more elastic than the optical member; a shaft that supports the optical member and the frame in a swingable manner and is made of the elastic material; a support that supports the shaft; and a restricting member that is provided in a position separate from the optical member and comes into contact with the optical member when the optical member and the frame swing. ### Claim 18 (depends on 17) The optical device according to claim 17, wherein the restricting member comes into contact with the frame when the optical member and the frame swing. ### Claim 19 (depends on 18) An image display apparatus comprising the optical device according to claim 18. ### Claim 20 (depends on 17) An image display apparatus comprising the optical device according to claim 17.