title: Electrothermal MEMS parallel plate rotation for single-imager stereoscopic endoscopes.
abstract: This work reports electrothermal MEMS parallel plate-rotation (PPR) for a single-imager based stereoscopic endoscope. A thin optical plate was directly connected to an electrothermal MEMS microactuator with bimorph structures of thin silicon and aluminum layers. The fabricated MEMS PPR device precisely rotates an transparent optical plate up to 37° prior to an endoscopic camera and creates the binocular disparities, comparable to those from binocular cameras with a baseline distance over 100 μm. The anaglyph 3D images and disparity maps were successfully achieved by extracting the local binocular disparities from two optical images captured at the relative positions. The physical volume of MEMS PPR is well fit in 3.4 mm x 3.3 mm x 1 mm. This method provides a new direction for compact stereoscopic 3D endoscopic imaging systems.
authors.forename: Kyung-Won
authors.initials: KW
authors.lastname: Jang
authors.forename: Sung-Pyo
authors.initials: SP
authors.lastname: Yang
authors.forename: Seung-Hwan
authors.initials: SH
authors.lastname: Baek
authors.forename: Min-Suk
authors.initials: MS
authors.lastname: Lee
authors.forename: Hyeon-Cheol
authors.initials: HC
authors.lastname: Park
authors.forename: Yeong-Hyeon
authors.initials: YH
authors.lastname: Seo
authors.forename: Min H
authors.initials: MH
authors.lastname: Kim
authors.forename: Ki-Hun
authors.initials: KH
authors.lastname: Jeong