title: Practical design for compact image scanner with large depth of field by compound eye system.
abstract: We designed a new image scanner using the reflective optics of a compound eye system that can easily assemble plural imaging optical units (called imaging cells) and is compact with a large depth of field (DOF). Our image scanner is constructed from 32 reflective imaging cells, each of which takes an image of approximately a 10-mm field of view (FOV) that slightly overlap the adjacent imaging cells. The total image is rebuilt by combining the 32 images in post processing. We studied how to fold the optical path in the imaging cells and simplified the structure, resulting in the following three advances of our previous work: 1) greater compactness (50 × 31 mm2 in the cross section), 2) less variable optical characteristics among the imaging cells, and 3) easy assembly thanks to small number of optical components constructing the imaging cell.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kawano
authors.forename: Tatsuki
authors.initials: T
authors.lastname: Okamoto
authors.forename: Hajime
authors.initials: H
authors.lastname: Nakajima
authors.forename: Shigeru
authors.initials: S
authors.lastname: Takushima
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Toyoda
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yamanaka
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Funakura
authors.forename: Kosaku
authors.initials: K
authors.lastname: Yamagata
authors.forename: Taku
authors.initials: T
authors.lastname: Matsuzawa
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Kunieda
authors.forename: Tadashi
authors.initials: T
authors.lastname: Minobe