| 摘要 |
This application discloses a scanning type display optical system that has a small number of parts and is easily miniaturized. A scanning type display optical system according to the present invention includes a plurality of light sources emitting light having wavelength regions mutually different, a light combining element combining the plurality of light emitted from the light sources, and a scanning optical system scanning light, combined by the light combining element, on a scan surface. Here, the light combining element is a diffraction optical element.
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