%T Light engine and optics for HELIUM3D auto-stereoscopic laser scanning display %L discovery1317557 %P 2161 - 2021 %A K Aksit %A S Olcer %A E Erden %A VC Kishore %A H Urey %A E Willman %A H Baghsiahi %A SE Day %A DR Selviah %A FA Fernandez %A P Surman %D 2011 %O © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. %C Piscataway, US %B 2011 3DTV Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON) %X This paper presents a laser based auto-stereoscopic 3D display technique and a prototype utilizing a dual projector light engine. The solution described is able to form dynamic exit pupils under the control of a multi-user head-tracker. A prototype completed recently is able to provide a glasses-free solution for a single user at a fixed position. At the end of the prototyping phase it is expected to enable a multiple user interface with an integration of the pupil tracker and the spatial light modulator. %K 3D Display, Laser Scanning, pupil tracking, auto-stereoscopic, dynamic exit pupil, laser display, three colour lasers, uniformity, speckle, microlens array, microlens diffuser, liquid crystal, SLM, Spatial Light Modulator %I IEEE