Title:
操作装置および画像読取装置
Document Type and Number:
Japanese Patent JP5590974
Kind Code:
B2
Abstract:
On a bottom surface of a light guide element of an operation device including a panel with a light-transmissive portion, a reflection portion is formed in a first region thereof, which is close to a light source, and a first diffusion surface is formed in a second region of the bottom surface of the light guide element, which is a region distant from the light source. A light-incident side of the light guide element is a non-diffusion surface. Sides other than the light-incident side are second diffusion surfaces. Light that has been emitted from the light source and incident to the light guide element via the light-incident side is totally reflected and is then guided to the first and the second diffusion surfaces and a part of diffusion-reflected light illuminates the light-transmissive portion of the panel.
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Inventors:
Shimoyama 昇
Ogushi 博
Ishida 靖
Ogushi 博
Ishida 靖
Application Number:
JP2010131253A
Publication Date:
September 17, 2014
Filing Date:
June 08, 2010
Export Citation:
Assignee:
Canon, Inc.
International Classes:
H01H9/18; F21S2/00; H01H36/00; F21Y101/02
Attorney, Agent or Firm:
Takuma Abe
Kuroiwa 創吾
Kuroiwa 創吾
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