Title:
照明装置、表示装置、並びに導光板
Document Type and Number:
Japanese Patent JP5281082
Kind Code:
B2
Abstract:
An illumination device (L) includes a plurality of light source units (20) each having a light guide plate (1) and a plurality of light sources (21). The light guide plate (1) has an illumination region (4) through which incident beams of light from the light sources (21) are emitted outward and a light guide region (3) through which the incident beams of light from the light sources (21) are guided toward the illumination region (4), with the light guide region (3) and the illumination region (4) laid side-by-side. The illumination region (4) is divided into a plurality of light-emitting sections (9) by slit sections (8), provided in such a way as to extend along directions of optical axes of the light sources (21), which restrict transmission of light. At least one of the light sources (21) is provided to each of the light-emitting sections (9) in such a way as to be placed side-by-side along the light guide region (3). The light source units (20) are provided in such a way as to be placed side-by-side along at least along a first direction along which the light-emitting sections (9) are arranged in the illumination region (4). There is also provided a slit section (8) in at least part of a space between light-emitting sections (9) between light source units (20) adjacent to each other along the first direction. This makes it possible to provide an illumination device (L) capable of retaining its strength as a combination of light guide blocks while reducing leakage of light into an adjacent area and capable of emitting uniform light.
Inventors:
Ajichi Yusaku
Application Number:
JP2010514332A
Publication Date:
September 04, 2013
Filing Date:
December 25, 2008
Export Citation:
Assignee:
Sharp Corporation
International Classes:
F21S2/00; G02B6/00; G02F1/133; G02F1/13357; F21Y101/02
Domestic Patent References:
| JP2010055999A | 2010-03-11 | |||
| JP2006522436A | 2006-09-28 | |||
| JPH11288611A | 1999-10-19 | |||
| JP2000258633A | 2000-09-22 | |||
| JPH02111922A | 1990-04-24 | |||
| JP2006190684A | 2006-07-20 | |||
| JPH05164923A | 1993-06-29 | |||
| JPS6319885U | 1988-02-09 |
Attorney, Agent or Firm:
Kenzo Hara International Patent Office