Title:
LIGHT GUIDE PLATE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/090301
Kind Code:
A1
Abstract:
A light guide plate (1) has a transparent flat plate. An end surface of the flat plate is set as a light-receiving surface (Sin). A main surface of the flat plate is set as a light-emitting surface (Sout). A main surface of the flat plate on the opposite side from the light-emitting surface (Sout) is set as a distributed light control surface (Scont). An end surface of the flat plate on the opposite side from the light-receiving surface (Sin) is set as an opposite light-receiving surface (Sin'). Pseudo-half-spindle-shaped reflection dots (1a) that have a recess shape are provided in the distributed light control surface (Scont). Each of the pseudo-half-spindle-shaped reflection dots (1a) has a first curved sloped surface (11) provided in the light-receiving surface (Sin), and a second curved sloped surface (12) that is provided in the opposite light-receiving surface (Sin') facing the first curved sloped surface (11), and that is connected to the first curved sloped surface (11). The first curved sloped surface (11) has a first arc shape as viewed from the distributed light control surface (Scont). The second curved sloped surface (12) has a second arc shape as viewed from the distributed light control surface (Scont). The first curved sloped surface (11) has the shape of a third arc shape as viewed from the light-receiving surface (Sin). The second curved sloped surface (12) has the shape of a third arc shape as viewed from the opposite light-receiving surface (Sin').
Inventors:
OKI YOJI (JP)
MIYAMOTO TAKASHI (JP)
GOH LINGWEI (JP)
MIYAMOTO TAKASHI (JP)
GOH LINGWEI (JP)
Application Number:
PCT/JP2023/037662
Publication Date:
May 02, 2024
Filing Date:
October 18, 2023
Export Citation:
Assignee:
STANLEY ELECTRIC CO LTD (JP)
International Classes:
F21S2/00; F21V8/00
Foreign References:
| JP2005209558A | 2005-08-04 | |||
| JP2002214447A | 2002-07-31 | |||
| JP2004249369A | 2004-09-09 |
Attorney, Agent or Firm:
IGARASHI Shozo (JP)
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