Title:
頭部装着型表示装置
Document Type and Number:
Japanese Patent JP7172188
Kind Code:
B2
Abstract:
A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.
Inventors:
Yonekubo Masatoshi
Akio Fukase
Akio Fukase
Application Number:
JP2018124798A
Publication Date:
November 16, 2022
Filing Date:
June 29, 2018
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G02B27/02; G02B5/04
Domestic Patent References:
| JP4057011A | ||||
| JP2003075614A | ||||
| JP11352440A | ||||
| JP2006301585A | ||||
| JP2007025546A | ||||
| JP2003066531A |
Foreign References:
| US5134521 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Kazunori Onami
Hiroyuki Matsumoto
Akio Sato
Kazunori Onami
Hiroyuki Matsumoto
Akio Sato