PROJECTION IMAGE DISPLAY DEVICE

WIPO Patent Application WO/2023/037729

A1

A projection image display device according to the present invention comprises: an illumination optical system that generates illumination light by combining, from a light source unit, a first color laser light and a second color laser light; a light modulation unit that generates image light by modulating the illumination light; and a projection optical system that expands and projects the image light. The light source unit is configured so as to minimize the difference between the height of a light source image of the first color laser light and the height of a light source image of the second color laser light. A relay optical system comprises a reflection first aperture that has a variable opening diameter and that is disposed at a first pupil position. The projection optical system comprises an absorption second aperture that has a variable opening diameter and that is disposed at a second pupil position conjugate with the first pupil position.

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YAMAGISHI SHIGEKAZU
OKUNO MANABU

PCT/JP2022/026187

March 16, 2023

June 30, 2022

Click for automatic bibliography generation  

PANASONIC IP MAN CO LTD (JP)

G03B21/00; G03B21/14

WO2018211886A1	2018-11-22
WO2018142589A1	2018-08-09
WO2015129656A1	2015-09-03
WO2008132831A1	2008-11-06

JP2019132986A	2019-08-08
JP2019045846A	2019-03-22
JP2015501508A	2015-01-15
JP2004029849A	2004-01-29

KAMATA Kenji et al. (JP)

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