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Title:
PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/230380
Kind Code:
A1
Abstract:
Provided is a projection system capable of projecting visible image light and near-infrared image light and of reducing costs. In this projection system (100), a light source device (1) emits first visible light (L1), second visible light (L2) having a longer wavelength than the first visible light (L1), and near-infrared light (L3). A spatial light modulation unit (2) spatially modulates the first visible light (L1), the second visible light (L2), and the near-infrared light (L3) from the light source device (1) to generate first image light (L11), second image light (L12), and third image light (L13). By controlling the spatial light modulation unit (2), a control device (4) is able to alternatively project, via a projection optical system (3), any image light among the plurality of types of image light including the first image light (L11), the second image light (L12), and the third image light (L13), and also to project, via the projection optical system (3), any two or more types of image light among the plurality of types of image light.

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Inventors:
KITANO HIROSHI
NITTA MITSURU
ABE TAKESHI
Application Number:
PCT/JP2022/010363
Publication Date:
November 03, 2022
Filing Date:
March 09, 2022
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G03B21/00; G03B21/14; H04N5/74
Foreign References:
JP2007010807A2007-01-18
JP2008176195A2008-07-31
JP2010014743A2010-01-21
JPH05158038A1993-06-25
JP2018517255A2018-06-28
JP2020187165A2020-11-19
JP2010049103A2010-03-04
JPH0749494A1995-02-21
JP2021015247A2021-02-12
JP2021004319A2021-01-14
JP2019219513A2019-12-26
JP2008185673A2008-08-14
CN204856019U2015-12-09
JP2017054061A2017-03-16
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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