Abstract
In this paper, we propose a reflective augmented reality (AR) display system based on integral imaging (II) using a mirror-based pinhole array (MBPA). The MBPA, obtained by punching pinholes on a mirror, functions as a three-dimensional (3D) imaging device, as well as an image combiner. The pinhole array of MBPA can realize a pinhole array-based II display, while the mirror of MBPA can image the real objects, so as to combine the images of the real objects with the reconstructed 3D images. The structure of the proposed reflective AR display is very simple, and only a projection system or a two-dimensional display screen is needed to combine with the MBPA. In our experiment, a 25cm × 14cm sized AR display was built up, a combination of a 3D virtual image and a real 3D object was presented by the proposed AR 3D display. The proposed device could realize an AR display of large size due to its compact form factor and low weight.
Highlights
With the development of display technologies, electronic display devices have to meet people’s higher requirements
The experimental system consists of a projector, a rear projection screen and a mirror-based pinhole array (MBPA)
The rear projection transmitted through theother pinholes (c) theplate mirror image formed by the reflected lightby the high screen was attached to the sideofofMBPA; the acrylic substrate to receive projected of the real object reflected by the mirror area of the MBPA; and (d) the augmented reality (AR)
Summary
With the development of display technologies, electronic display devices have to meet people’s higher requirements. AR systems using these methods are more suitable for near-eye displays because of the size limitation, known as one of the common shortcomings, of the display screen or view box. Sci. 2019, 9, 3124; doi:10.3390/app9153124 www.mdpi.com/journal/applsci transfer 3D images into the viewer’s eyes through total internal reflection in an optical waveguide was proposed, and achieved a good transmittance of the real-world lights [20]. AR systems using these methods are more near-eye displays because of the size limitation, known as one of the common. To achieve a more compact structure for an AR system, the use of a lens array holographic optical element (HOE) has been proposed more compact. ARarray system, theonly use reached of a lens several array holographic [22,23], but structure the size offor theanlens. Importantly, ease of manufacturing morehas importantly, ease of of lower manufacturing large-sizedand display large-sized display screens
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