Search International and National Patent Collections

1. (WO2018129841) TRANSPARENT PHOTOCONDUCTOR HAVING LIGHT SHIELDING FUNCTION, AND APPLICATION THEREOF

Pub. No.:    WO/2018/129841    International Application No.:    PCT/CN2017/083411
Publication Date: Fri Jul 20 01:59:59 CEST 2018 International Filing Date: Tue May 09 01:59:59 CEST 2017
IPC: F21S 8/10
Applicants: HASCO VISION TECHNOLOGY CO., LTD.
华域视觉科技(上海)有限公司
Inventors: ZHANG, Jie
张洁
Title: TRANSPARENT PHOTOCONDUCTOR HAVING LIGHT SHIELDING FUNCTION, AND APPLICATION THEREOF
Abstract:
A transparent photoconductor (5) having a light shielding function, and a vehicle lamp illumination system. The transparent photoconductor (5) is provided with an optical stop structure (5a) and comprises an incident surface (5b), an exit surface (5c), and upper and lower reflection surfaces (5d, 5e); a part of incident light is irradiated to a reflection surface (2a) of a reflection mirror (2) and is directly reflected to a lens (4) so as to form a first part (G1) of an illumination light shape (G); another part of the incident light is irradiated to the incident surface (5b) of the transparent photoconductor (5) and refracted to the interior of the photoconductor (5), and passes through the upper reflection surface (5d), and then is refracted to the lens (4) by the exit surface (5c) so as to form a second part (G2) of the illumination light shape (G); another part of the incident light is refracted to the upper reflection surface (5d) by the incident surface (5b), and is projected onto a road surface by means of the lens (4) after being reflected to the reflection surface (5c) so as to also form the second part (G2) of the illumination light shape (G); another part of the incident light is irradiated to the reflection surface (2a) of the reflection mirror (2), is then refracted to the lower reflection surface (5e) after being reflected to the upper reflection surface (5d), passes through the lower reflection surface (5e), and is then refracted to the lens (4) so as to form a third part (G3) of the illumination light shape (G); another part of the incident light is irradiated to the reflection surface (2a) of the reflection mirror (2) and is reflected to the lens (4) after being reflected to the upper reflection surface (5d) so as to form a fourth part (G4) of the illumination light shape (G). By replacing a light shielding plate in the prior art with a transparent photoconductor having a light path changing function so as to form a brightness-darkness cutoff line, the total light effect of a projection-type illumination system is improved.