Title:
VARIABLE MAGNIFICATION PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/066675
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a variable magnification projection optical system in which the display distance of a virtual image is easily changed at an arbitrarily defined position within a screen. A variable magnification projection optical system 13 is provided with: a first projection optical system 30 which forms a first intermediate image from an image of a display element 11; and a second projection optical system 40 which reflects image light from the first intermediate image TI1 by a combiner 20 that is a display screen, thereby displaying a virtual image through the display screen, wherein the second projection optical system 40 has a variable focus optical system 51 in which the display position of the virtual image is variable.
Inventors:
HASHIMURA JUNJI (JP)
YAMADA NORIHIDE (JP)
YAMADA NORIHIDE (JP)
Application Number:
PCT/JP2017/036389
Publication Date:
April 12, 2018
Filing Date:
October 05, 2017
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
G02B27/01; B60K35/00; G02B15/14; G02B17/08
Domestic Patent References:
| WO2013005444A1 | 2013-01-10 |
Foreign References:
| JP2010256867A | 2010-11-11 | |||
| JP2016151686A | 2016-08-22 | |||
| US5640275A | 1997-06-17 |
Attorney, Agent or Firm:
FUKUDA, Mitsuhiro (JP)
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