# US 7,613,080 B2 · Optical pickup device and manufacturing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,613,080 B2 - Document ID: US7613080B2 - Status: Granted - Kind: B2 - Application number: 11/232,961 - Filed: 2005-12-07 - Published: 2006-03-23 - Granted: 2009-11-03 - Earliest claimed: 2005-12-07 - Assignees: Hitachi Media Electronics Co., Ltd. - Inventors: Yoshio Oozeki; Hiroaki Furuichi; Satoshi Arai; Hideo Sotokawa - Web page: https://patentgrep.com/patent/US7613080B2 ## CPC - G11B 7/22: Apparatus or processes for the manufacture of optical heads, e.g. assembly - G11B 7/08582: {Sled-type positioners} - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract To provide an optical pickup device in which an optical parts module is fixedly adhered in a high positional precision to an optical pickup case, such that the adhesion strength can be sufficiently enhanced against a stress to be applied to the adhering faces from a flexible printed circuit board connected to the optical parts module, the present invention forms the adhering faces on at least two portions across the optical axis of the optical parts module, and also forms groove portions on the individual surfaces of the optical parts module and the optical pickup case for the adhering faces. ## Claims ### Claim 1 An optical pickup device comprising: at least one optical parts module; an optical pickup case having said optical parts module fixed thereon by an adhesive; and a flexible printed circuit board connected to said optical parts module; wherein said optical parts module includes an adhering face confronting said optical pickup case, on at least two portions across the optical axis of said optical parts module; wherein said optical pickup case includes an adhering face, at a position that confronts the adhering face of said optical parts module; wherein the adhering face of said optical parts module has at least one of a concave portion and a convex portion; and wherein a heat-conductive adhesive is applied to at least one face of said optical parts module other than said adhering face of said optical parts module. ### Claim 2 (depends on 1) The optical pickup device according to claim 1, wherein said adhesive is an ultraviolet setting type adhesive; and wherein said at least one of a concave portion and a convex portion of said adhering face of said optical parts module includes at least one groove formed along an irradiation direction of an ultraviolet ray used to set said adhesive. ### Claim 3 (depends on 2) An optical device comprising the optical pickup device according to claim 2. ### Claim 4 (depends on 2) The optical pickup device according to claim 2, wherein a shape of a cross-section of said groove is at least one of triangular, rectangular, and quadrilateral. ### Claim 5 (depends on 1) An optical device comprising the optical pickup device according to claim 1. ### Claim 6 (depends on 1) The optical pickup device according to claim 1, wherein an adhering face of said optical pickup case has at least one of a concave portion and a convex portion. ### Claim 7 (depends on 6) The optical pickup device according to claim 6, wherein at least one of said concave portion and said convex portion of at least one of said adhering face of said optical parts module and said adhering face of said optical pickup case is parallel with the lamination direction. ### Claim 8 (depends on 6) The optical pickup device according to claim 6, wherein said at least one of a concave portion and a convex portion of one of said adhering face of said optical parts module and said adhering face of said optical pickup case confronts at least one of a concave portion and a convex portion of the other of said adhering face of said optical parts module and said adhering face of said optical pickup case; and wherein said adhering faces complement one another. ### Claim 9 (depends on 1) The optical pickup device according to claim 1, wherein said flexible printed circuit board is bent; and wherein said flexible printed circuit board applies a stress to said adhesive. ### Claim 10 A manufacturing method of an optical pickup device, comprising: forming an optical parts module with an adhering face having at least one of a concave portion and a convex portion on at least two portions across the optical axis of said optical parts module; and affixing said optical parts module to an optical pickup case; and connecting a flexible printed circuit board to said optical parts module; sandwiching an adhesive between the adhering face of said optical parts module and an adhering face of said optical pickup case which confront one another; setting said adhesive after a position of said optical parts module is adjusted; and applying a heat-conductive adhesive to said optical parts module which is affixed to said optical pickup case by said heat-conductive adhesive. ### Claim 11 (depends on 10) The optical pickup device manufacturing method according to claim 10, wherein said adhesive is an ultraviolet setting type adhesive, and wherein at least one of a concave portion and a convex portion of said adhering face includes at least one groove formed along an irradiation direction of an ultraviolet ray for setting said adhesive. ### Claim 12 (depends on 11) The optical pickup device manufacturing method according to claim 11, further comprising: wherein a shape of a cross-section of said groove is at least one of triangular, rectangular, and quadrilateral. ### Claim 13 (depends on 10) The optical pickup device manufacturing method according to claim 10, further comprising: wherein an adhering face of said optical pickup case has at least one of a concave portion and a convex portion. ### Claim 14 (depends on 13) The optical pickup device manufacturing method according to claim 13, further comprising: wherein at least one of said concave portion and said convex portion of at least one of said adhering face of said optical parts module and said adhering face of said optical pickup case is parallel with the lamination direction. ### Claim 15 (depends on 13) The optical pickup device manufacturing method according to claim 13, further comprising: wherein said at least one of a concave portion and a convex portion of one of said adhering face of said optical parts module and said adhering face of said optical pickup case confronts at least one of a concave portion and a convex portion of the other of said adhering face of said optical parts module and said adhering face of said optical pickup case; and wherein said adhering faces complement one another. ### Claim 16 (depends on 10) The optical pickup device manufacturing method according to claim 10, further comprising: wherein said flexible printed circuit board is bent; and wherein said flexible printed circuit board applies a stress to said adhesive.