Title:
車両用灯具
Document Type and Number:
Japanese Patent JP5666942
Kind Code:
B2
Abstract:
A vehicle lamp (10) includes a light source (14, 14') having a light emitting-surface (14a, 14'A), a first lens (12) configured to deflect a first part of direct light from the light source (14, 14') to form a first light distribution pattern (PC) having a horizontal and oblique cutoff lines (CL1, CL2) on an upper side of the first light distribution pattern (PC), and a second lens (22) configured to horizontally diffuse a second part of the direct light from the light source (14, 14') to form a second light distribution pattern (PB1, PB2) that overlaps the first light distribution pattern (PC). The first lens (12) is a convex lens, and is disposed on an optical axis (Ax) extending in a front-rear direction of the vehicle lamp (10). The light source (14, 14') is arranged such that the light emitting-surface (14a, 14'A) faces forward in the front-rear direction, and such that a bottom side (14a1, 14'A1) of the light emitting-surface (14a, 14'A) is disposed on a plane including the optical axis (Ax) and has an end point located at a rear focal point (F) of the first lens (12). The second lens (22) has a shape of a portion of a convex lens other than a central portion of the convex lens. The first lens (12) and the second lens (22) are formed as a single unitary piece such that the second lens (22) extends around the first lens (12). The first lens (12) and the second lens (22) have substantially the same maximum thickness in the front-rear direction.
Inventors:
八木 隆之
Application Number:
JP2011038611A
Publication Date:
February 12, 2015
Filing Date:
February 24, 2011
Export Citation:
Assignee:
株式会社小糸製作所
International Classes:
F21S8/12; F21S8/10; F21V5/00; F21V5/04; F21W107/10
Attorney, Agent or Firm:
Sakaki Morishita
Takehiro Murata
Tomoyoshi Miki
Takehiro Murata
Tomoyoshi Miki