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US 10,649,272 B2Granted
Display device
AssigneeJapan Display Inc.
InventorsYudai Numata, Takeo Koito
Life of this patent
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Abstract
According to one embodiment, a display device includes a display which emits display light, an optical element including a transmission axis which transmit first linearly polarized light, which reflects second linearly polarized light crossing the transmission axis and a retroreflective element which retroreflects the display light, and the retroreflective element includes a first portion including a first surface, a second portion including a second surface and a third portion disposed between the first surface and the second surface, and an angle made by the first surface and the second surface is greater than 0° and less than 180°.
Claims11
A display device comprising:
- a display which emits display light;
- an optical element comprising a transmission axis which transmits first linearly polarized light, which reflects second linearly polarized light crossing the transmission axis;
- and
- a retroreflective element which retroreflects the display light,
- the retroreflective element comprising:
- a first portion comprising a first surface;
- a second portion comprising a second surface;
- and
- a third portion disposed between the first surface and the second surface, wherein
- an angle made by the first surface and the second surface is greater than 0° and less than 180°,
- the display and the retroreflective element are arranged along a first direction, and an angle made between the display and the retroreflective element is greater than 0° and less than 180°,
- the first surface and the second surface are arranged along a second direction crossing the first direction, and an angle made between the first surface and the second surface is an acute angle,
- the first portion includes a first edge on a side of the optical element with regard to the third portion,
- the second portion includes a second edge on a side of the optical element with regard to the third portion,
- the first edge and the second edge are aligned along the second direction, and
- a first gap along the second direction between the first edge and the second edge in a first position is greater than a second gap along the second direction between the first edge and the second edge in a second position spaced further from the display than the first position.
13 more elements
A display device comprising:
- a display which emits display light;
- an optical element comprising a transmission axis which transmits first linearly polarized light, which reflects second linearly polarized light crossing the transmission axis;
- and
- a retroreflective element which retroreffects the display light,
- the retroreflective element comprising:
- a concave first portion and a concave second portion, and
- a convex third portion disposed between the concave first portion and the concave second portion, wherein
- the concave first portion and the concave second portion are arranged symmetrically with respect to the convex third portion,
- the display and the retroreflective element are arranged along a first direction, and an angle made between the display and the retroreflective element is greater than 0° and less than 180°,
- the concave first portion, the convex third portion, and the concave second portion are arranged in this order along a second direction crossing the first direction,
- the concave first portion includes a first edge on a side of the optical element with regard to the convex third portion,
- the concave second portion includes a second edge on a side of the optical element with regard to the convex third portion,
- the first edge and the second edge are arranged along the second direction, and
- a first gap along the second direction between the first edge and the second edge in a first position is greater than a second gap along the second direction between the first edge and the second edge in a second position spaced further from the display than the first position.
11 more elements
A display device comprising:
- a display which emits display light;
- an optical element comprising a transmission axis which transmits first linearly polarized light, which reflects second linearly polarized light crossing the transmission axis;
- and
- a retroreflective element which retroreflects the display light, the retroreflective element comprising:
- a first portion comprising a first surface;
- and a second portion comprising a second surface,
- the first surface and the second surface crossing in a straight portion, wherein
- an angle made by the first surface and the second surface is greater than 0° and less than 180°,
- the display and the retroreflective element are arranged along a first direction, and an angle made between the display and the retroreflective element is greater than 0° and less than 180°,
- the first surface and the second surface are arranged along a second direction crossing the first direction, and an angle made between the first surface and the second surface is an acute angle,
- the first portion includes a first edge on a side of the optical element with regard to the straight portion,
- the second portion includes a second edge on a side of the optical element with regard to the straight portion, the first edge and the second edge are arranged along the second direction, and
- a first gap along the second direction between the first edge and the second edge in a first position is greater than a second gap along the second direction between the first edge and the second edge in a second position spaced further from the display than the first position.
10 more elements
Dependencies are inferred from the claim text.