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Title:
LIGHT GUIDE BODY AND IMAGE READING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/003480
Kind Code:
A1
Abstract:
Provided are a light guide body and an image reading apparatus that are capable of efficiently irradiating an irradiation object (1). The present invention is provided with: rod-shaped light guide main bodies (2) that extend in the long direction; first end surface parts (3) that are end surfaces of the light guide main bodies (2) in the short direction; a light scattering pattern part (5) that scatters light that has entered through the first end surface parts (3) and guided within the light guide main bodies (2); and light emission surface parts (6) which are formed in the light guide main bodies in the long direction and from which the light scattered by the light scattering pattern part (5) and reflected on the wall surfaces of the light guide main bodies (2) is emitted to the outside of the light guide main bodies (2), wherein the light emission surface parts (6) have first light emission surface parts (6a) located near the first end surface parts (3) in the long direction, and second light emission surface parts (6b) that are continuous from the first light emission surface parts (6a) in the long direction, and the width of the first light emission surface parts (6a) in the short direction is smaller than that of the second light emission surface parts (6b) in the short direction.

Inventors:
MATSUZAWA, Taku (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
SHIRAKI, Toru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
KUNISHIO, Hideki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
OHAMA, Daisuke (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2018/001236
Publication Date:
January 03, 2019
Filing Date:
January 17, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H04N1/04; F21V8/00; G02B6/00; G03B27/54; H04N1/028; F21Y115/10; F21Y115/15
Foreign References:
JP2006073383A2006-03-16
JP2006191521A2006-07-20
JP2016133646A2016-07-25
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
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