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US 12,724,292 B2Granted
Image display device
AssigneeNichia Corporation
InventorsHajime Akimoto, Hiroshi Miyairi, Keiko Ono, Masae Yamawaki
Life of this patent
Estimating the term…
Abstract
An image display device includes an imaging element, a light source that forms a floating image, a position detecting part, a driver, and a controller. The imaging element includes a base member including a first surface, and a reflector array on the base member; or a base member comprising a reflector array and including a first surface. The reflector array includes multiple reflector rows including multiple dihedral corner reflectors along a first direction. The reflector rows are arranged parallel to a second direction crossing the first direction. The dihedral corner reflectors each include a first reflecting surface, and a second reflecting surface orthogonal to the first reflecting surface.
Claims15
An image display device comprising:
- an imaging element configured to form a floating image;
- a light source configured to irradiate, toward the imaging element, light forming the floating image;
- a position detecting part configured to detect an observation position of an observer observing the floating image;
- a driver configured to modify an orientation of an emission of light of at least one of the imaging element or the light source;
- and
- a controller configured to control the driver to form the floating image according to the observation position;
- wherein:
- the imaging element comprises either:
- a base member, and a reflector array provided on the base member, the base member including a first surface and a second surface positioned at a side opposite to the first surface, or
- a base member comprising a reflector array, the base member including a first surface and a second surface positioned at a side opposite to the first surface;
- the reflector array includes a plurality of reflector rows, the plurality of reflector rows including a plurality of dihedral corner reflectors arranged along a first direction;
- each of the plurality of dihedral corner reflectors includes:
- a first reflecting surface configured to reflect light from a first surface side, and
- a second reflecting surface orthogonal to the first reflecting surface and configured to reflect a reflected light from the first reflecting surface toward the first surface side;
- in each of the plurality of reflector rows, an angle between (i) a straight line at which the first reflecting surface and the second reflecting surface meet and (ii) a plane in which the first direction and a second direction intersecting the first direction extend, is greater than 0° or less than 90°;
- an angle between the first reflecting surface and the plane is greater than 45° and less than 90°;
- the plurality of reflector rows include a first reflector row in which the angle between the straight line and the plane is a smallest value among those of the plurality of reflector rows;
- and
- reflector rows other than the first reflector row are configured such that angles between the straight line and the plane increase away from the first reflector row in the second direction.
16 more elements
An image display device comprising:
- an imaging element configured to form a floating image;
- a light source configured to irradiate, toward the imaging element, light forming the floating image;
- a position detecting part configured to detect an observation position of an observer observing the floating image;
- a driver configured to modify an orientation of an emission of light of at least one of the imaging element or the light source;
- and
- a controller configured to control the driver to form the floating image according to the observation position;
- wherein:
- the imaging element comprises either:
- a base member, and a reflector array provided on the base member, the base member including a first surface and a second surface positioned at a side opposite to the first surface, or
- a base member comprising a reflector array, the base member including a first surface and a second surface positioned at a side opposite to the first surface;
- the reflector array includes a plurality of reflector rows, the plurality of reflector rows including a plurality of dihedral corner reflectors arranged along a first direction;
- the plurality of reflector rows are arranged in a second direction to be parallel to each other with a spacing therebetween, the second direction intersecting the first direction,
- the plurality of dihedral corner reflectors each include:
- a first reflecting surface configured to reflect light from a first surface side, and
- a second reflecting surface orthogonal to the first reflecting surface and configured to reflect a reflected light reflected from the first reflecting surface toward the first surface side, wherein
- in each of the plurality of reflector rows, an angle between (i) a straight line at which the first reflecting surface and the second reflecting surface meet and (ii) a plane in which the first direction and the second direction intersect, is greater than 0° and less than 90°,
- an angle between the first reflecting surface and the plane is greater than 45° and less than 90°;
- the plurality of reflector rows include a first reflector row in which the angle between the straight line and the plane is a smallest value among those of the plurality of reflector rows,
- reflector rows other than the first reflector row are configured such that angles between the straight line and the plane increase away from the first reflector row in one direction along the second direction.
16 more elements
Dependencies are inferred from the claim text.