Title:
虚像投射装置
Document Type and Number:
Japanese Patent JP7050088
Kind Code:
B2
Abstract:
There is provided a highly efficient virtual image projection device in a small size that displays images of high luminance in which an illumination system is reduced in size with no degradation in an effective luminous light beam. A virtual image projection device that shows video to a human eye includes a virtual light source surface (116) that emits a light beam in a predetermined angular distribution, an image forming lens (117) that condenses the light beam from the virtual light source surface (116), and a display (120) that creates video. When the virtual light source surface (116) is disposed at a nearly focal position on the front side of the image forming lens (117), the display (120) is disposed at a nearly focal position on the rear side of the image forming lens.
Inventors:
Seiji Murata
Cormorant fishing
Kawamura friend
Toshiki Nakamura
Cormorant fishing
Kawamura friend
Toshiki Nakamura
Application Number:
JP2019557078A
Publication Date:
April 07, 2022
Filing Date:
October 30, 2018
Export Citation:
Assignee:
Hitachi LG Data Storage Co., Ltd.
International Classes:
G02B27/02; G02F1/13357; H04N5/64
Domestic Patent References:
| JP2002090694A | ||||
| JP2016095411A | ||||
| JP2004102132A | ||||
| JP2013045649A | ||||
| JP2004157173A | ||||
| JP2008287049A |
Foreign References:
| WO2005093493A1 | ||||
| US20170280031 |
Attorney, Agent or Firm:
Aoritsu patent business corporation
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