LIGHT GUIDE BODY, ILLUMINATION DEVICE, AND IMAGE READING DEVICE

WIPO Patent Application WO/2007/080798

A1

[PROBLEMS] Provided are a bar-shaped light guide body which can be easily built in an image reading device, a line illumination device, an intimate contact type image sensor, and an image reading device using the bar-shaped light guide body. [MEANS FOR SOLVING PROBLEMS] For example, a bar-shaped light guide body has a protrusion having a flat or a curved surface obtained by polishing the end surface in its longitudinal direction while leaving 80% of the area ratio or more. A heat transfer film is bonded to the protrusion to form a reflection surface. Thus, even if a part of the protrusion is melted when performing thermal processing of the heat transfer film, the melted portion will not go out of the cross sectional area of the bar-shaped light guide body and it is easy to contain the light guide body in a case.

ISHIMARU TAKESHI (JP)
KISHIMOTO TAKASHI (JP)
TAKEUCHI HIDEMITSU (JP)
SAITO TOMIHISA (JP)
AZUMA HIDEKI (JP)
HASHIMOTO TAKAHIRO (JP)

PCT/JP2006/326120

July 19, 2007

December 27, 2006

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NIPPON SHEET GLASS CO LTD (JP)
ISHIMARU TAKESHI (JP)
KISHIMOTO TAKASHI (JP)
TAKEUCHI HIDEMITSU (JP)
SAITO TOMIHISA (JP)
AZUMA HIDEKI (JP)
HASHIMOTO TAKAHIRO (JP)

G02B6/00; F21V8/00; G03B27/54; H04N1/028; H04N1/04

JP2005341141A	2005-12-08
JPH0116919A

KOYAMA, Yuu (Furuya Bldg. 3-29, Kioich, Chiyoda-ku Tokyo 94, JP)

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