• Proceedings of the Optical Society of Korea Conference
• /
• 2009.02a
• /
• pp.351-352
• /
• 2009

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2008.06a
• /
• pp.657-658
• /
• 2008

• Proceedings of the Optical Society of Korea Conference
• /
• 2009.10a
• /
• pp.321-322
• /
• 2009

• Proceedings of the Optical Society of Korea Conference
• /
• 2009.10a
• /
• pp.137-138
• /
• 2009

• Proceedings of the Optical Society of Korea Conference
• /
• 2007.07a
• /
• pp.219-220
• /
• 2007

• Proceedings of the Optical Society of Korea Conference
• /
• 2005.07a
• /
• pp.160-161
• /
• 2005

• Electronics and Telecommunications Trends
• /
• v.32 no.5
• /
• pp.30-38
• /
• 2017

Digital holography is generally regarded as one of the most possible candidates for achieving a real 3D display system in that it can fully record and reconstruct the wave characteristics of light. In addition, 3D display systems based on digital holographic technology do not cause a vergence-accommodation mismatch problem. In this report, the recent trends in digital holographic display technology are described, and recent research results related to the fields of augmented reality and virtual reality are also briefly reported.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.17 no.2
• /
• pp.447-452
• /
• 2013

Microfluidic devices can offer precise control for a verity of tasks involving biological specimen. In this paper, we propose an integrated system consisting of a microfluidic device along with a digital holographic microscope and present three-dimensional (3D) sensing and segmentation of biological microorganisms. When the individual microorganisms are inputted into the microfluidic channel, the holographic microscope records their holograms. The holograms are computationally reconstructed in 3D using Fresnel transform and the reconstructed phase images are used to search the position of microorganisms. Optical experiments are carried out and experimental results are presented to illustrate the usefulness of the proposed system.

• Korean Journal of Optics and Photonics
• /
• v.18 no.5
• /
• pp.303-308
• /
• 2007

We report here on the application of a digital holographic microscope as a metrology tool for the inspection and the micro-topography reconstruction of different micro-structures of phase shift photo-mask (PSM). The lithography by phase shift photo-mask uses the interference and the pattern of the PSM is not imaged by general optical microscope. The technique allows us to obtain digitally a high-fidelity surface topography description of the phase shift photo-mask with only one hologram image acquisition, allowing us to have relatively simple and compact set-ups able to give quantitative information of PSM.

• Korean Journal of Optics and Photonics
• /
• v.25 no.3
• /
• pp.137-141
• /
• 2014

In this study a method is proposed for measuring both the refractive index and the shape of a transparent object. The proposed method combines a digital holographic microscope with a liquid. The holograms of a sample immersed in different liquids are recorded and then the three-dimensional phase information of the sample is reconstructed numerically. In particular, we have proposed a theoretical model for determining both the refractive index and shape of a sample, and micro-corner cubes are examined experimentally.