Title:
PROJECTION OPTICAL DEVICE AND PROJECTOR
Document Type and Number:
Japanese Patent JP2017078733
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a projection optical device capable of projecting an image with high resolution.SOLUTION: The projection optical device includes a first optical system, a curved surface mirror 8 that reflects light exiting from the first optical system, and a support part supporting the curved surface mirror 8. The curved surface mirror 8 includes: a pivotal support part 821 pivotally supported as rotatable by the support part; an engaging part 83 that regulates rotation of the curved surface mirror 8 around an optical axis Ax and engages the curved surface mirror 8 with the support part, allowing the mirror to be rotatable around a first direction and a second direction intersecting the optical axis Ax and intersecting each other; and a reference part 85 disposed at a position closer to the engaging part 83 than the pivotal support part 821. The pivotal support part 821 and the reference part 85 are protrusions extending in the same direction. The top end of the pivotal support part 821 is formed into spherical; and the pivotal part 821 and the reference part 85 are formed into circular when viewed in the above same direction.SELECTED DRAWING: Figure 5
Inventors:
TAKEHANA NAOTO
HATANO TAKUYA
SATO TAKASHI
HATANO TAKUYA
SATO TAKASHI
Application Number:
JP2015205306A
Publication Date:
April 27, 2017
Filing Date:
October 19, 2015
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G03B21/14; G02B7/198; G03B21/00; H04N5/74
Attorney, Agent or Firm:
Kazuaki Watanabe
Keisuke Nishida
Satoshi Nakai
Keisuke Nishida
Satoshi Nakai
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