Multi-view display module employing MEMS projector array

Abstract

A frameless multi-view display module that consists of an array of microelectromechanical system (MEMS) based projectors, a sparse lenticular lens, and a vertical diffuser is proposed to provide a large-screen autostereoscopic display. The projectors are positioned in a horizontal vector form or in a matrix form in front of the transfer screen in order to produce the same number of three-dimensional (3D) pixels in each cylindrical lens constituting the lenticular lens to increase the horizontal resolution of the module. The projectors generate a slanted two-dimensional array of dots on the vertical diffuser to provide a large number of viewpoints. The experimental display system was constructed using four projectors. The system had a 3D resolution of 160 × 120, and it provided 64 views. The screen size was 14.4 in.

56.6L: Late‐News Paper: Modular Multi‐Projection Multi‐View Autostereoscopic Display using MEMS Laser Projectors

“…The demonstrated prototype provides horizontal expansion in screen size, and in number of perspectives shown to the viewer, simply: by using more projectors, by increasing the distance between projectors and the screen, and by changing the diffusion angle of the vertical diffuser in horizontal axis. The continuity of the image on the screen is enhanced when compared with the previous displays with a similar approach [3], [4]. The main disadvantage which we have observed in our prototype is color matching among all projectors.…”

“…Multi-projection based Multi-view autostereoscopic displays [1] are capable of displaying different perspectives to a single user [2], or multiple users [3]. previously, a multiuser modular autostereoscopic displays [3], [4], [5] were demonstrated, which have a comparably larger spacing in between projectors, huge volume consumptions, and suffers from the discrete behavior of the image shown on the screen. Additionally, the mentioned displays have an extra lens to register each pixel correctly, so that right perspective can be perceived by each viewer depending on their positions.…”

Calibration Method for the Panel-type Multi-view Display

“…It separates the view images spatially with the optical devices and provides binocular disparities to observers [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. A multi-view display system is usually implemented with 2D display systems such as flat panel displays or projectors, and takes advantages of their high lateral resolution [1][2][3][4].…”

“…The calibration of a projection-type multi-view display has been studied intensively, because the system is often implemented with multiple projectors [11][12][13][14][15][16][17][18][19]. Multiple projectors have their own mechanical calibrators inside, so one can calibrate them with the optical movement and with the image compensation method.…”

Advanced MEMS-based technologies and displays

“…The 43 sizes are in the level of micrometers (1-100 lm) for MEMS compo- 44 nents and from 20 to 1000 lm for MEMS devices. Due to different 45 components and applications, MEMS have different terms to 46 describe, such as RF MEMS (radio-frequency MEMS) for radio- 47 frequency applications, MOEMS (micro-optoelectromechanical 48 systems) for optical devices, NEMS (nanoelectromechanical 49 systems) in nanoscales and bioMEMS for bio-related applications. 50 The fabrication of MEMS is evolved from semiconductor device 51 fabrication process.…”