Variable mirror-equipped display apparatus
AssigneeStanley Electric Co., Ltd.
InventorKeisuke KATO
Life of this patent
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Abstract
To reduce glare due to external light during an image display state of a variable mirror-equipped display apparatus. The variable mirror-equipped display apparatus that is electrically switchable between a mirror state and an image display state including: a display unit that emits image light; a reflective polarizer disposed on a light emission side of the display unit; a liquid crystal lens disposed opposite the display unit with the reflective polarizer interposed therebetween; and a control device that controls operation of the display unit and the liquid crystal lens; where the liquid crystal lens is electrically switchable under the control of the control device between a first state which exhibits a lens effect and a second state which does not exhibit the lens effect.
Claims7
A variable mirror-equipped display apparatus that is electrically switchable between a mirror state and an image display state comprising:
- a display unit that emits an image light;
- a reflective polarizer disposed on a light emission side of the display unit;
- a liquid crystal lens disposed opposite the display unit with the reflective polarizer interposed therebetween;
- and
- a control device that controls operation of the display unit and the liquid crystal lens;
- wherein the liquid crystal lens is provided with an alignment film that has been subjected to an alignment treatment,
- wherein the polarization direction of the image light that passes through the reflective polarizer and enters the liquid crystal lens is substantially orthogonal to the alignment treatment direction of the liquid crystal lens, and the image light that enters the liquid crystal lens is emitted without changing its direction of travel,
- wherein the liquid crystal lens is electrically switchable under the control of the control device between a first state which exhibits a lens effect and a second state which does not exhibit the lens effect.
A variable mirror-equipped display apparatus that is electrically switchable between a mirror state and an image display state comprising:
- a display unit that emits image light;
- a half mirror disposed on a light emission side of the display unit;
- a liquid crystal lens disposed opposite the display unit with the half mirror interposed therebetween;
- and
- a control device that controls operation of the display unit and the liquid crystal lens;
- wherein the liquid crystal lens is electrically switchable under the control of the control device between a first state which exhibits a lens effect and a second state which does not exhibit the lens effect.
Dependencies are inferred from the claim text.