Projection display device
Number of patents in Portfolio can not be more than 2000
United States of America
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Sep 10, 2024
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N/A
app pub date -
Jan 13, 2022
filing date -
Jan 13, 2022
priority date (Note) -
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Abstract
This projection display device includes: a light source unit emitting a white light along a first optical axis; a lighting unit provided on a second optical axis, the lighting unit splitting the white light into predetermined color lights and uniformizing an illuminance distribution of the predetermined color lights; an image generator including a display element modulating the predetermined color lights, and a projection lens projecting an image light including the predetermined color lights modulated along a third optical axis; at least one optical path switching unit selectively switching between reflection and transmission of the white light; a light diffuser including a diffusion optical system spreading the white light to a desired illumination area and projecting the spread white light as an illumination light; and a controller causing the at least one optical path switching unit to switch between emission of the image light and emission of the illumination light.
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