| 摘要 |
PURPOSE: A lens for a head lamp is provided to prevent the deterioration of lens performance by arranging the focus of an aspheric face on the same position. CONSTITUTION: A light source(10) radiates light. A reflector(30) reflects light projected from the light source toward. A lens(70) refracts the light reflected from the reflector to form a light distribution pattern. A block plate(50) is interposed between the reflector and a lens to block a part of light. A step height includes a first step height arranged in horizontal direction and a second height arranged in a vertical direction.
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