Vehicle lamp
First Claim
1. A vehicle lamp comprising:
- a reflection mirror having a principal optical axis and a reflection surface comprising a plurality of reflection steps, said steps being defined by portions of respective paraboloids of revolution and disposed between adjacent ones of lines of intersection, each said lines of intersection being obtained where a respective one of a group of said paraboloids of revolution having different focal distances meets a basic reflection surface;
a front lens arranged in front of said reflection mirror; and
a light source arranged on said principal optical axis of said reflection mirror so that a central axis of said light source is arranged to be perpendicular to said principal optical axis of said reflection mirror;
wherein said reflection steps are formed into longitudinal stripe-shapes in the vertical direction, when viewed in the direction of said principal optical axis of said reflection mirror, andwherein said lens steps are also formed in square regions on said front lens.
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Accused Products
Abstract
A vehicle lamp includes a reflection mirror, a front lens, and a light source arranged between the reflection mirror and the front lens in such a manner that the central axis of the light source is perpendicular to the principal optical axis. The reflection mirror is composed of a reflection surface having a large number of reflection steps which are defined by portions of paraboloids of revolution and are disposed between adjacent ones of lines of intersection obtained between a group of the paraboloids of revolution having different focal distances and a fundamental reflection surface of the reflection surface. Each reflection step is arranged to be extended substantially in the vertical direction, and square lens steps are formed on the front lens. Due to the foregoing, an arrangement tendency with respect to a set of projected images of the light source formed by the reflection step is matched with a section of the lens step on the front lens.
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Citations
12 Claims
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1. A vehicle lamp comprising:
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a reflection mirror having a principal optical axis and a reflection surface comprising a plurality of reflection steps, said steps being defined by portions of respective paraboloids of revolution and disposed between adjacent ones of lines of intersection, each said lines of intersection being obtained where a respective one of a group of said paraboloids of revolution having different focal distances meets a basic reflection surface; a front lens arranged in front of said reflection mirror; and a light source arranged on said principal optical axis of said reflection mirror so that a central axis of said light source is arranged to be perpendicular to said principal optical axis of said reflection mirror; wherein said reflection steps are formed into longitudinal stripe-shapes in the vertical direction, when viewed in the direction of said principal optical axis of said reflection mirror, and wherein said lens steps are also formed in square regions on said front lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification