A novel configuration of LCD projectors for efficient orthogonal polarization of two projected views

• Published in: Optics communications Vol. 266; no. 1; pp. 55 - 66
• Main Authors: Kim, Seung-Cheol, Kim, Eun-Soo
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2006; Elsevier Science
• Subjects: 3D display; Display devices, liquid-crystal devices; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Light efficiency; Optical elements, devices, and systems; Optics; Physics; Polarization; Stereoscopic projection; Light efficiency; Polarization; 3D display; Stereoscopic projection; Projection method; Optical polarization; Display devices; Stereoscopy; Liquid crystal displays; Experimental study; Mode conversion
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2006.04.018

In this paper, a novel configuration of LCD projectors for efficiently polarized stereoscopic projection with improved light efficiency is presented. In the proposed scheme, polarization orientations of the analyzers in the LCD engine of one projector are rotated by 90° with respect to those of the other one, so it causes to rotate orientations of polarized outputs by 90° as well as to change operational modes of LCD panels from the normally black mode to the normally white mode or vice versa. Then, by exchanging the green color components between the modified and original LCD projectors, two orthogonally polarized views for stereoscopic projection could be obtained without use of external polarizers. Analysis on the operational mode conversions of the LCD engines with rotation of the analyzers is discussed and its experimental results are provided.