Dynamic exit pupil trackers for autostereoscopic displays

Abstract

This paper describes the first demonstrations of two dynamic exit pupil (DEP) tracker techniques for autostereoscopic displays. The first DEP tracker forms an exit pupil pair for a single viewer in a defined space with low intraocular crosstalk using a pair of moving shutter glasses located within the optical system. A display prototype using the first DEP tracker is constructed from a pair of laser projectors, pupil-forming optics, moving shutter glasses at an intermediate pupil plane, an image relay lens, and a Gabor superlens based viewing screen. The left and right eye images are presented time-sequentially to a single viewer and seen as a 3D image without wearing glasses and allows the viewer to move within a region of 40 cm × 20 cm in the lateral plane, and 30 cm along the axial axis. The second DEP optics can move the exit pupil location dynamically in a much larger 3D space by using a custom spatial light modulator (SLM) forming an array of shutters. Simultaneous control of multiple exit pupils in both lateral and axial axes is demonstrated for the first time and provides a viewing volume with an axial extent of 0.6-3 m from the screen and within a lateral viewing angle of ± 20° for multiple viewers. This system has acceptable crosstalk (< 5%) between the stereo image pairs. In this novel version of the display the optical system is used as an advanced dynamic backlight for a liquid crystal display (LCD). This has advantages in terms of overall display size as there is no requirement for an intermediate image, and in image quality. This system has acceptable crosstalk (< 5%) between the stereo image pairs.

Beaming displays: towards displayless augmented reality near-eye displays

“…We argue that instead of following the common trend in near-eye display design, [12][13][14][15][16][17] or stereoscopic displays, [18][19][20][21][22] new approaches that avoid solving problems in near-eye display design space is required. Hence, we propose a novel way of designing augmented reality near-eye displays, which we call as the Beaming Display.…”

Implementation of Features Dynamic Tracking Filter to Tracing Pupils

“…Equation 3shows the dilation and equation (4) erosion. [3] (3) (4) Figure 5 shows the application of the two filters.…”

Eye-tracked three-dimensional display based on laser backlight modulated by spatial light modulator

“…In addition to use the LEDs as a backlight, laser sources have been widely utilized in many fields. Recently, laser-based 3D displays combined with microelectro-mechanical systems (MEMS) have been suggested to offer high resolution and large depth 3D images [23][24][25][26]. As shown in figure 2-9, Reitterer, J. et al…”