Optical device and direction display device
First Claim
Patent Images
1. An optical device for displaying a condensing mark, comprising:
- a light source;
an optical element for condensing a light emitted from the light source into a shape of the condensing mark on an irradiated surface,wherein a deflection surface of the optical element is divided into a plurality of regions, the deflection surface being a surface for condensing the light, andeach of the divided regions on the deflection surface has a free-form surface shape, the free-form surface shape condensing the lights emitted through the each of the divided regions form partial irradiation images on the irradiated surface, the partial irradiation images becoming the condensing mark when combined, the condensing mark having a shape of any one of an arrowhead shape, an arrow shape and a X-shape; and
a second light source, the second light source being different from the light source and emitting a second light, andwherein the free-form surface shape of each of the divided regions on the deflection surface has a shape, the shape condensing the second lights emitted through the each of the divided regions form second partial irradiation images on the irradiated surface, the second partial irradiation images becoming a second condensing mark formed on the irradiated surface at a position where distance from the optical device is different from the condensing mark when combined, the second condensing mark having a shape any one of arrowhead shape, arrow shape and X-shape.
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Abstract
An optical device for displaying a condensing mark includes a light source, and an optical element for condensing light emitted from the light source onto an irradiated surface. The deflection surface of the optical element is divided into a plurality of regions. The light emitted through the respective regions on the deflection surface of the optical element forms partial irradiation images corresponding to the respective regions on the deflection surface of the irradiated surface. The respective partial irradiation images are combined into at least one condensing mark on the irradiated surface.
8 Citations
15 Claims
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1. An optical device for displaying a condensing mark, comprising:
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a light source; an optical element for condensing a light emitted from the light source into a shape of the condensing mark on an irradiated surface, wherein a deflection surface of the optical element is divided into a plurality of regions, the deflection surface being a surface for condensing the light, and each of the divided regions on the deflection surface has a free-form surface shape, the free-form surface shape condensing the lights emitted through the each of the divided regions form partial irradiation images on the irradiated surface, the partial irradiation images becoming the condensing mark when combined, the condensing mark having a shape of any one of an arrowhead shape, an arrow shape and a X-shape; and a second light source, the second light source being different from the light source and emitting a second light, and wherein the free-form surface shape of each of the divided regions on the deflection surface has a shape, the shape condensing the second lights emitted through the each of the divided regions form second partial irradiation images on the irradiated surface, the second partial irradiation images becoming a second condensing mark formed on the irradiated surface at a position where distance from the optical device is different from the condensing mark when combined, the second condensing mark having a shape any one of arrowhead shape, arrow shape and X-shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification