Mr. Naoyuki Omura Profile

Naoyuki Omura

at Nihon Univ

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

SPIE Journal Paper | 1 July 2009

Method to enlarge the hologram viewing window using a mirror module

Hoonjong Kang, Naoyuki Omura, Takeshi Yamaguchi, Hiroshi Yoshikawa, Seung-Cheol Kim, Eun-Soo Kim

OE, Vol. 48, Issue 07, 075801, (July 2009) https://doi.org/10.1117/12.10.1117/1.3180869

KEYWORDS: Mirrors, Holograms, Spatial light modulators, Holography, Diffraction, Liquid crystal on silicon, Displays, Image resolution, LCDs, 3D image reconstruction

Read Abstract +

A liquid crystal panel for a video projector is often used for holographic television. However, its pixel size and pixel number are not enough for practical holographic 3-D display. Therefore, a multipanel configuration is generally used to increase the viewing window and displayed image size, and many spatial light modulators should be used in them. We propose a novel method to increase the viewing window of a holographic display system. The proposed method, which is implemented by using a mirror module and 4-f lens set, is to reconfigure the beam shape reflected by a spatial light modulator. The equipment is applied to a holographic display system, which has only a single spatial light modulator; a hologram could be displayed in a wider viewing window by the equipment than that of the conventional method. By the proposed method, the resolution of the reconfigured spatial light modulator has double resolution in the horizontal direction. Inversely, the vertical resolution is decreased. Even if the vertical resolution is decreased, a viewer could get 3-D effect because humans get more 3-D information in the horizontal direction. We have experimented using a liquid crystal on silicon (LcOS), whose resolution is 4096×2160 pixels. The reconfigured resolution by the mirror module is 8192×1080 pixels. From the experiments, the horizontal viewing window is almost two times wider than that without the mirror module. As a result, the hologram can be observed binocularly.

Proceedings Article | 25 January 2008 Paper

A method to increase the hologram viewing angle by the beam reconfiguration

Naoyuki Ohmura, Hoonjong Kang, Takeshi Yamaguchi, Hiroshi Yoshikawa

Proceedings Volume 6912, 69120O (2008) https://doi.org/10.1117/12.764503

KEYWORDS: Holograms, Mirrors, Holography, Liquid crystal on silicon, Iris, Displays, Spatial resolution, Image resolution, Radon, Liquid crystals

Read Abstract +

A liquid crystal panel is often used for holographic television. However, its pixel size and pixel number are not enough for practical holographic 3D display. Therefore, multi-panel configuration is often used to increase the viewing angle and displayed image size. However, many spatial light modulators should be used in them. In this paper, we propose a novel method to increase the viewing angle of a holographic display system. The proposed method, which is implemented by a mirror module, is to reconfigure the beam shape reflected by a spatial light modulator. In this paper, the equipment is applied to a holographic display system, which has only a single spatial light modulator and can display a hologram in wider viewing angle than that of the conventional method. By the proposed method, the resolution of the reconfigured spatial light modulator has double resolution in horizontal direction. Inversely, the vertical resolution is decreased because the human get more 3D information in horizontal direction. We have experimented using a Liquid Crystal on Silicon, whose resolution is 4,096 x 2,160 pixels. And the reconfigured resolution by the mirror module is 8,192 x 1,080 pixels. From the experimental results, the horizontal viewing angle is almost two times wider than that of the conventional method without the mirror module. We have achieved that the hologram can be observed binocularly.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years