Title:
IMAGE PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/176312
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an image projection device which can mitigate imaging surface warpage specifications of a projection lens with a simple method. To achieve the purpose, the image projection device which generates image light is configured to comprise: a display unit which generates an image; a projection lens which projects, as image light, the image generated by the display unit; and an optical path length correction element which corrects the optical path length between the display unit and the projection lens, wherein the optical path length correction element is disposed between the display unit and the projection lens.
Inventors:
MOURI TAKAHIRO (JP)
NAKAMURA TOSHITERU (JP)
KUNO TAKUMA (JP)
NAKAMURA TOSHITERU (JP)
KUNO TAKUMA (JP)
Application Number:
PCT/JP2021/043981
Publication Date:
August 25, 2022
Filing Date:
November 30, 2021
Export Citation:
Assignee:
HITACHI LG DATA STORAGE INC (JP)
International Classes:
G02B15/02; G02B15/08; G02B27/02; G03B21/00; G03B21/14
Domestic Patent References:
| WO2013179592A1 | 2013-12-05 |
Foreign References:
| JPH06186499A | 1994-07-08 | |||
| JP2005099788A | 2005-04-14 | |||
| JP2008192188A | 2008-08-21 | |||
| JP2020160115A | 2020-10-01 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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