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Thin-form-factor red-green-blue laser scanning system for full-color laser image projection.

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Title: Thin-form-factor red-green-blue laser scanning system for full-color laser image projection.
Authors: Yamada, Shoji1 (AUTHOR), Nakao, Akira2 (AUTHOR), Katsuyama, Toshio1 (AUTHOR) t-katsu@u-fukui.ac.jp, Kawasaki, Osamu3 (AUTHOR), Iwabata, Kazuki3 (AUTHOR), Yabe, Yuuta3 (AUTHOR), Yoshida, Tetsufumi3 (AUTHOR), Horii, Koichi3 (AUTHOR), Himeno, Akira1,3 (AUTHOR)
Source: Optical Review. Jun2025, Vol. 32 Issue 3, p519-527. 9p.
Subjects: Graphical projection, Lasers, Micromirrors, LIDAR
Abstract: A thin-form-factor laser scanning system composed of a planar-type laser source with a waveguide-type combiner and a micro-electromechanical systems (MEMS) scanning mirror was developed. The laser source and MEMS mirror were mounted on a common substrate, resulting in a thin and small form factor. The scanning laser beam comprised coaxially combined red, green, and blue beams, capable of projecting a full-color laser scanning image. The system design incorporated a projection image distortion analysis, which assumed a raster scan scheme, whereby the horizontal fast-scan direction lay in the plane defined by the incident beam direction and the direction normal to the common substrate, and the vertical slow-scan direction lay in a plane perpendicular to the horizontal scan plane. The incident angle of the laser beam on the MEMS mirror was kept small (less than 45°). Three types of laser scanning systems were constructed to provide scanning laser beams with different beam directions by replacing the detachable beam-deflection modules as follows: (1) Simple mirror type directing the beam opposite to the incident beam, with a system height of 4 mm; (2) Beam splitter type directing the beam perpendicular to the incident beam, with a system height of 6 mm; and (3) Prism mirror type directing the beam forward relative to the incident beam, with a system height of 8 mm. The systems had distinctive features rendering each suitable for different applications. Thus, these laser scanning systems offer compact solutions for laser scanning image projection. [ABSTRACT FROM AUTHOR]
Copyright of Optical Review is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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PubType: Academic Journal
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  Data: Thin-form-factor red-green-blue laser scanning system for full-color laser image projection.
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  Data: <searchLink fieldCode="JN" term="%22Optical+Review%22">Optical Review</searchLink>. Jun2025, Vol. 32 Issue 3, p519-527. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Graphical+projection%22">Graphical projection</searchLink><br /><searchLink fieldCode="DE" term="%22Lasers%22">Lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Micromirrors%22">Micromirrors</searchLink><br /><searchLink fieldCode="DE" term="%22LIDAR%22">LIDAR</searchLink>
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  Data: A thin-form-factor laser scanning system composed of a planar-type laser source with a waveguide-type combiner and a micro-electromechanical systems (MEMS) scanning mirror was developed. The laser source and MEMS mirror were mounted on a common substrate, resulting in a thin and small form factor. The scanning laser beam comprised coaxially combined red, green, and blue beams, capable of projecting a full-color laser scanning image. The system design incorporated a projection image distortion analysis, which assumed a raster scan scheme, whereby the horizontal fast-scan direction lay in the plane defined by the incident beam direction and the direction normal to the common substrate, and the vertical slow-scan direction lay in a plane perpendicular to the horizontal scan plane. The incident angle of the laser beam on the MEMS mirror was kept small (less than 45°). Three types of laser scanning systems were constructed to provide scanning laser beams with different beam directions by replacing the detachable beam-deflection modules as follows: (1) Simple mirror type directing the beam opposite to the incident beam, with a system height of 4 mm; (2) Beam splitter type directing the beam perpendicular to the incident beam, with a system height of 6 mm; and (3) Prism mirror type directing the beam forward relative to the incident beam, with a system height of 8 mm. The systems had distinctive features rendering each suitable for different applications. Thus, these laser scanning systems offer compact solutions for laser scanning image projection. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Optical Review is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10043-025-00985-w
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 519
    Subjects:
      – SubjectFull: Graphical projection
        Type: general
      – SubjectFull: Lasers
        Type: general
      – SubjectFull: Micromirrors
        Type: general
      – SubjectFull: LIDAR
        Type: general
    Titles:
      – TitleFull: Thin-form-factor red-green-blue laser scanning system for full-color laser image projection.
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            – D: 01
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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