Vehicular light
AssigneeIchikoh Industries, Ltd.
InventorYasuhiro Okubo
Life of this patent
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Abstract
The objective of the invention is to provide a vehicular light equipped with an odd-shaped lens wherein light distribution loss has been suppressed. This vehicular light is equipped with: a light source unit comprising at least five light-emitting chips disposed horizontally; and an odd-shaped lens having a convex entry surface on the light source unit side and a convex exit surface in the direction leaving from the light source unit, wherein the entry surface comprises a free-form curved surface whereof the horizontal curvature radius increases gradually from the lens optical axis Z in the outward direction.
Claims9
A vehicular light comprising:
- a light source unit having at least five or more light emitting chips arranged in a horizontal direction;
- and
- an odd-shaped lens having a convex-shaped incident surface on the light source unit side and a convex-shaped light emission surface in a direction away from the light source unit,
- wherein the incident surface is formed with a freeform curve arranged so that a curvature radius of the freeform curve in at least the horizontal direction gradually becomes larger in a continuous fashion from a lateral center of the lens to the horizontal end thereof.
A vehicular light comprising:
- a light source unit having at least five or more light emitting chips arranged in a horizontal direction;
- and
- an odd-shaped lens having a convex-shaped incident surface on the light source unit, side and convex-shaped light emission surface in a direction away from the light source unit,
- wherein the incident surface is formed with a freeform curve in which a curvature radius in the horizontal direction gradually increases from a lens optical axis toward an outside,
- wherein
- the light emission surface is formed with a freeform curve including one in which, when light is radiated onto the incident surface from a basic focal point on the lens optical axis, light radiated forward from the light emission surface gradually spreads toward the outside from the lens optical axis when viewed in the horizontal direction, and gradually spreads upward on a side above the lens optical axis, and is parallel on a side below the lens optical axis when viewed in a vertical direction, and
- the light source unit is arranged such that the light emitting chips are positioned behind the basic focal point.
A vehicular light comprising:
- a light source unit having at least five or more light emitting chips arranged in a horizontal direction;
- and
- an odd-shaped lens having a convex-shaped incident surface on the light source unit side and a convex-shaped light emission surface in a direction away from the light source unit,
- wherein the incident surface is formed with a freeform curve in which a curvature radius in the horizontal direction gradually increases from a lens optical axis toward an outside,
- wherein
- micro diffusion elements that are raised strips that extend in the horizontal direction are formed in succession in the vertical direction on the incident surface, and
- micro diffusion elements that are raised strips that extend in the vertical direction are formed in succession in the horizontal direction on the light emission surface.
Dependencies are inferred from the claim text.