Perceived Depth in Arc 3D Display Can Penetrate into Behind Real Object by Moving Arc 3D Images in Contrast to Unpenetrated Perceived Depth in Stereoscopic Display

2019 ◽  
pp. 167
Author(s):  
Kisa Nakano ◽  
Takahiko Yoshida ◽  
Haruki Mizushina ◽  
Shiro Suyama
Keyword(s):  
Real Object ◽  
Stereoscopic Display ◽  
3D Display ◽  
3D Images

Full-parallax 3D display using time-multiplexing projection technology

2020 ◽  
Vol 2020 (2) ◽  
pp. 100-1-100-6
Author(s):  
Takuya Omura ◽  
Hayato Watanabe ◽  
Naoto Okaichi ◽  
Hisayuki Sasaki ◽  
Masahiro Kawakita
Keyword(s):  
Incident Light ◽  
Polarization State ◽  
3D Image ◽  
3D Display ◽  
Time Division Multiplexing ◽  
3D Images ◽  
Polarization Gratings ◽  
Light Rays ◽  
Time Division

We enhanced the resolution characteristics of a threedimensional (3D) image using time-division multiplexing methods in a full-parallax multi-view 3D display. A time-division light-ray shifting (TDLS) method is proposed that uses two polarization gratings (PGs). As PG changes the diffraction direction of light rays according to the polarization state of the incident light, this method can shift light rays approximately 7 mm in a diagonal direction by switching the polarization state of incident light and adjusting the distance between the PGs. We verified the effect on the characteristics of 3D images based on the extent of the shift. As a result, the resolution of a 3D image with depth is improved by shifting half a pitch of a multi-view image using the TDLS method, and the resolution of the image displayed near the screen is improved by shifting half a pixel of each viewpoint image with a wobbling method. These methods can easily enhance 3D characteristics with a small number of projectors.

scholarly journals RePro3D: Full-parallax 3D Display for Superimposing 3D Images onto the Real World using Retro-reflective Projection Technology

2012 ◽  
Vol 66 (4) ◽  
pp. J101-J107
Author(s):  
Takumi Yoshida ◽  
Sho Kamuro ◽  
Kouta Minamizawa ◽  
Hideaki Nii ◽  
Susumu Tachi
Keyword(s):  
Real World ◽  
3D Display ◽  
3D Images ◽  
The Real

Protruding apparent 3D images in depth-fused 3D display

2008 ◽  
Vol 54 (2) ◽  
pp. 233-239 ◽  
Author(s):  
Hideaki Takada ◽  
Shiro Suyama ◽  
Munekazu Date ◽  
Yoshimitsu Ohtani
Keyword(s):  
3D Display ◽  
3D Images

scholarly journals Design of 3D volumetric display

2021 ◽  
Vol 2070 (1) ◽  
pp. 012204
Author(s):  
Aravind P Madhu ◽  
C Akhil Balu ◽  
Akshay Krishnan ◽  
Adithya Aravind ◽  
Jibin Noble ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Three Dimensional ◽  
Display Device ◽  
Stereoscopic Display ◽  
3D Images ◽  
Light Emitting ◽  
3D Objects ◽  
3D Space ◽  
Swept Volume ◽  
Visual Clues

Abstract Stereoscopic, or multi-view, display systems that can give significant visual clues for the human brain to understand three-dimensional (3D) objects, they are regarded as better alternatives to traditional two-dimensional (2D) displays. A device that can render 3D images for viewers without the use of specific headgear or glasses is known as an auto-stereoscopic display. Manipulation of light rays via Light engines is also used to create 3D images in 3D space. We introduce a new auto-stereoscopic swept-volume display (SVD) system based on light-emitting diode (LED) arrays in this research. A display device plus a graphics control sub-system makes up this system. The display device is a 2D revolving panel of LEDs that generates 3D images using “persistence of vision”.

Light field display using wavelength division multiplexing

2020 ◽  
Vol 2020 (2) ◽  
pp. 101-1-101-4
Author(s):  
Masaki Yamauchi ◽  
Tomohiro Yendo
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Light Field ◽  
Wavelength Modulation ◽  
3D Display ◽  
Mechanical Motion ◽  
3D Images ◽  
Wavelength Division ◽  
Binary Images ◽  
Time Division

We propose a large screen 3D display which enables multiple viewers to see simultaneously without special glasses. In prior researches, methods of using a projector array or a swinging screen were proposed. However, the former has difficulty in installing and adjusting a large number of projectors and the latter cases occurrence of vibration and noise because of the mechanical motion of the screen. Our proposed display consists of a wavelength modulation projector and a spectroscopic screen. The screen shows images of which color depends on viewing points. The projector projects binary images to the screen in time-division according to wavelength of projection light. The wavelength of the light changes at high-speed with time. Therefore, the system can show 3D images to multiple viewers simultaneously by projecting proper images according to each viewing points. The installation of the display is easy and vibration or noise are not occurred because only one projector is used and the screen has no mechanical motion. We conducted simulation and confirmed that the proposed display can show 3D images to multiple viewers simultaneously.

Projection type 3D display using spinning screen

2020 ◽  
Vol 2020 (2) ◽  
pp. 99-1-99-5
Author(s):  
Hiroki Hayakawa ◽  
Tomohiro Yendo
Keyword(s):  
Computer Simulation ◽  
Necessary Conditions ◽  
Scanning Speed ◽  
Stereoscopic Display ◽  
3D Display ◽  
Large Screen ◽  
Naked Eye ◽  
The Past ◽  
Light Rays

We propose 3D display that scans light rays from projector and enables stereoscopic display by arranging a number of long and thin mirror scanners with a gap and spinning each mirror scanner. This proposal aims at large-screen 3D display that allows multiple people to observe simultaneously with the naked eye. In previous study, multi-projection type 3D display was proposed as largescreen 3D display. However, many projectors make installation and adjustment complicated. Therefore, we have proposed 3D display that can display large screen with single projector in the past. However, there is a problem that the screen vibrates due to the screen swing mechanism, the scanning speed cannot be increased, and the displayed image appears to flicker. Our new proposed method can reduce the screen vibration by the spin mechanism, increase the scanning speed, and prevent the displayed image from flickering. Computer simulation was performed to confirm the principle of the proposed method, and it was confirmed that appropriate parallax could be presented. The necessary conditions and problems when manufacturing the actual machine were considered, and the prototype was designed.

scholarly journals A scalable diffraction-based scanning 3D colour video display as demonstrated by using tiled gratings and a vertical diffuser

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Jia Jia ◽  
Jhensi Chen ◽  
Jun Yao ◽  
Daping Chu
Keyword(s):  
Optical Information ◽  
Proof Of Concept ◽  
Viewing Angle ◽  
Video Display ◽  
3D Display ◽  
High Quality ◽  
3D Images ◽  
Concept System ◽  
High Bandwidth ◽  
Bandwidth Distribution

Abstract A high quality 3D display requires a high amount of optical information throughput, which needs an appropriate mechanism to distribute information in space uniformly and efficiently. This study proposes a front-viewing system which is capable of managing the required amount of information efficiently from a high bandwidth source and projecting 3D images with a decent size and a large viewing angle at video rate in full colour. It employs variable gratings to support a high bandwidth distribution. This concept is scalable and the system can be made compact in size. A horizontal parallax only (HPO) proof-of-concept system is demonstrated by projecting holographic images from a digital micro mirror device (DMD) through rotational tiled gratings before they are realised on a vertical diffuser for front-viewing.

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