We evaluate the imaging characteristics of an integrated optical imaging element that is used to obtain images from opposite directions in one imaging sensor for a three-dimensional eye-gaze detection system. The element consists of a transmission-type holographic imaging element, a reflection-type holographic imaging element, and a noise reduction filter. In the evaluation of the imaging characteristics, modulation transfer functions of both the reflection-type and the transmission-type holographic imaging elements are evaluated. Results indicate that both holographic imaging elements have enough resolution, even under white-light illumination conditions, for eye-gaze detection. We also demonstrate the simultaneous detection of images by an artificial eye and objects by using the integrated element under white light or sunlight.
© 2010 Optical Society of AmericaFull Article | PDF Article
Hideo Fujikake, Jun Yonai, Hiroto Sato, Hiroshi Kikuchi, Yoshiki Iino, Masahiro Kawakita, Yuzuru Tsuchiya, Kenichi Iwashita, and Shinya Umeda
Appl. Opt. 40(14) 2275-2281 (2001)
Wenhai Liu, George Barbastathis, and Demetri Psaltis
Appl. Opt. 43(18) 3581-3599 (2004)
Hong Hua, Prasanna Krishnaswamy, and Jannick P. Rolland
Opt. Express 14(10) 4328-4350 (2006)