Display device and light guide manufacturing method
AssigneePanasonic Automotive Systems Co., Ltd.
InventorKeiji SUGIYAMA
Life of this patent
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Abstract
A display device includes: a light guide that is curved; and an image light emitter that outputs image light to the light guide. Furthermore, the light guide includes: a first light guide layer; a second light guide layer; and an optical element that is disposed between the first light guide layer and the second light guide layer and diffracting and emitting light (image light) propagating in the first light guide layer and the second light guide layer. Moreover, the first light guide layer has a thickness less than a thickness of the second light guide layer.
Claims9
A display device comprising:
- a light guide that is curved;
- and
- an image light emitter that outputs image light to the light guide,
- wherein
- the light guide includes:
- a first light guide layer;
- a second light guide layer;
- and
- an optical element that is disposed between the first light guide layer and the second light guide layer, the optical element diffracting and emitting light propagating in the first light guide layer and the second light guide layer, and
- the first light guide layer has a thickness less than a thickness of the second light guide layer.
A display device comprising:
- a light guide that is curved;
- and
- an image light emitter that outputs image light to the light guide, wherein
- the light guide includes:
- a first light guide layer;
- a second light guide layer;
- and
- an optical element that is disposed between the first light guide layer and the second light guide layer, the optical element diffracting and emitting light propagating in the first light guide layer and the second light guide layer,
- the second light guide layer stays in a curved shape at room temperature, and
- the first light guide layer is bendable and stretchable at room temperature.
A method for manufacturing a light guide, the method comprising:
- bonding an optical element to a first light guide layer, the optical element diffracting and emitting light;
- bonding the first light guide layer to which the optical layer has been bonded, to a second light guide layer so that the optical element is disposed between the first light guide layer and the second light guide layer;
- wherein
- the second light guide layer is curved, and
- the first light guide layer has a thickness less than a thickness of the second light guide layer.
Dependencies are inferred from the claim text.