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US 12,681,302 B2Granted
Virtual image optical system, and virtual image display device and on-vehicle system including virtual image optical system
AssigneeCanon Kabushiki Kaisha
InventorsHiroto Kano, Takayuki Sugiyama
Life of this patent
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Abstract
A virtual image optical system includes first and second optical elements and each configured to guide light from a display unit, wherein the second optical element guides the light from the display unit to a first pupil to form a first virtual image, and the second optical element simultaneously guides the light from the display unit to a second pupil to form a second virtual image, and wherein decentering of the second optical element enables switching of positions of the first pupil and the second pupil to each other.
Claims19
A virtual image display device comprising:
- a display unit;
- and
- first and second optical elements each configured to guide light from the display unit,
- wherein the second optical element guides the light from the display unit to a first pupil to form a first virtual image, and the second optical element simultaneously guides the light from the display unit to a second pupil to form a second virtual image,
- wherein switching between a first state and a second state is enabled by physically moving the second optical element to cause decentering, wherein the second optical element is a reflective element or a refractive element,
- wherein, in the first state, a user is able to visually recognize the first virtual image, and is unable to visually recognize the second virtual image, and
- wherein, in the second state, the user is able to visually recognize the second virtual image, and is unable to visually recognize the first virtual image.
4 more elements
Dependencies are inferred from the claim text.