Title:
自動車のリヤコンビネーションランプ用の後方取付け型発光ダイオードモジュール
Document Type and Number:
Japanese Patent JP5615516
Kind Code:
B2
Abstract:
A rear-loading LED module for a rear combination lamp is disclosed. One or more LEDs are mounted on a printed circuit board that electrically powers and mechanically holds them outside a faceted, parabolic reflector. Light emitted from the LEDs enters a light propagation region, formed between the reflective adjacent faces of two nested cylinders. The cylinders extend from the LEDs, outside the reflector, longitudinally through a hole at the vertex of the reflector, to the focus of the reflector. In some applications, the light propagation region may act as a beam homogenizer, so that light exiting the light propagation region may have roughly uniform intensity. Light from the light propagation region strikes an outwardly-flared reflector that directs it largely transversely onto the parabolic reflector. The parabolic reflector collimates the light and directs it longitudinally, through a transparent cover and out of the lamp. The parabolic reflector may have facets that angularly divert portions of the reflected light to form a desired two-dimensional angular distribution for the exiting beam.
Inventors:
チャオファン・リウ
ホン・ルオ
ホン・ルオ
Application Number:
JP2009129191A
Publication Date:
October 29, 2014
Filing Date:
May 28, 2009
Export Citation:
Assignee:
オスラム・シルバニア・インコーポレイテッド
International Classes:
F21S8/10; H01L33/00; H01L33/60
Attorney, Agent or Firm:
Axis international patent business corporation