Search International and National Patent Collections
|1. (WO2017150512) IMAGE READING DEVICE|
|Applicants:||MITSUBISHI ELECTRIC CORPORATION
|Title:||IMAGE READING DEVICE|
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.