Title:
光デバイス及び光システム
Document Type and Number:
Japanese Patent JP6638274
Kind Code:
B2
Abstract:
An optical device includes a light-guiding plate and light sources that each emit light to the light-guiding plate. The light-guiding plate has light convergence portions, the light substantially converges at or scatters from a convergence point or line, and an image is formed by a collection of the convergence points or lines, and a light convergence portion causes light to be emitted in directions in which the light substantially converges in or scatters from a range including a point located a first distance apart from the emission surface, and a second light convergence portion causes light to be emitted in directions in which the light substantially converges in or scatters from a range including a point located a second distance, which is longer than the first distance, apart from the emission surface, and the number of first light convergence portions is higher than the number of second light convergence portions.
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Inventors:
Masayuki Shinohara
Tomokazu Kitamura
Yasuhiro Tagami
Mitsuru Okuda
Hirose Yuji
Kazuyuki Okada
Tomokazu Kitamura
Yasuhiro Tagami
Mitsuru Okuda
Hirose Yuji
Kazuyuki Okada
Application Number:
JP2015181063A
Publication Date:
January 29, 2020
Filing Date:
September 14, 2015
Export Citation:
Assignee:
OMRON Corporation
International Classes:
G02B5/02; F21S2/00; G02B3/08; G02B6/00; G02B30/00; G02B30/33
Domestic Patent References:
| JP2012118378A | ||||
| JP2009540440A | ||||
| JP2008275922A | ||||
| JP5701434B2 |
Foreign References:
| US20140268327 |
Attorney, Agent or Firm:
Longhua International Patent Service Corporation