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1. (WO2017150512) IMAGE READING DEVICE

Pub. No.:    WO/2017/150512    International Application No.:    PCT/JP2017/007723
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: H04N 1/028
G02B 3/00
G02B 3/06
G06T 1/00
H04N 1/19
H04N 5/225
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: KAWANO, Hiroyuki
河野 裕之
YAMAGATA, Kosaku
山縣 浩作
MINOBE, Tadashi
美濃部 正
KUNIEDA, Tatsuya
國枝 達也
KODAMA, Masatoshi
児玉 雅俊
Title: IMAGE READING DEVICE
Abstract:
An image reading device (1) is provided with the following: a microlens array (33) which includes a plurality of micro light-collecting lenses (34) disposed at the focal position of an image forming optical system for forming a plurality of erect equal-magnification images; and an image pickup unit (31) which includes light-receiving pixels (32x) disposed at a position corresponding to the micro light-collecting lenses (34). The micro light-collecting lenses (34) have a refractive power for causing light rays, of the light rays incident from the image forming optical system, that were incident at an incidence angle within a restricted angular range determined in advance to collect at a position different from that of the light rays incidents at an incidence angle outside of the restricted angular range. An effective light receiving region of the light receiving pixels (32x) only receives the light rays, of the light rays incident in the micro light-collecting lenses (34), incident at the incidence angle within the restricted angular range.