Past, current, and future of holographic video display [Invited]

An, Jungkwuen; Won, Kanghee; Lee, Hong-Seok

doi:10.1364/ao.444833

Cited by 12 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ideal goal of AR display is to present a virtual image superimposed on a real-world scene and avoid visual fatigue [ 7 ]. Holographic display can reconstruct 3D images with real physical depth cues and high resolution [ 8 , 9 , 10 , 11 ], which makes it a strong candidate for AR display. However, the narrow field of view (FOV) caused by low product of the space-bandwidth of the SLM has always been a significant barrier that promotes the development of AR display [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

High Resolution Multiview Holographic Display Based on the Holographic Optical Element

Qin

Sang²,

Li³

et al. 2023

Micromachines

View full text Add to dashboard Cite

Limited by the low space-bandwidth product of the spatial light modulator (SLM), it is difficult to realize multiview holographic three-dimensional (3D) display. To conquer the problem, a method based on the holographic optical element (HOE), which is regarded as a controlled light element, is proposed in the study. The SLM is employed to upload the synthetic phase-only hologram generated by the angular spectrum diffraction theory. Digital grating is introduced in the generation process of the hologram to achieve the splicing of the reconstructions and adjust the position of the reconstructions. The HOE fabricated by the computer-generated hologram printing can redirect the reconstructed images of multiview into multiple viewing zones. Thus, the modulation function of the HOE should be well-designed to avoid crosstalk between perspectives. The experimental results show that the proposed system can achieve multiview holographic augmented reality (AR) 3D display without crosstalk. The resolution of each perspective is 4K, which is higher than that of the existing multiview 3D display system.

show abstract

Section: Introductionmentioning

confidence: 99%

High Resolution Multiview Holographic Display Based on the Holographic Optical Element

Qin

Sang²,

Li³

et al. 2023

Micromachines

View full text Add to dashboard Cite

show abstract

“…It has a significant advantage in supplying depth information to human visual system since it can recreate the complete optical wavefront of a 3D scene [5]. Holographic 3D display is thought to be the final answer for 3D display technology [6]. However, one of the issues that holographic 3D display has experienced is the lack of 3D content [7].…”

Section: Introductionmentioning

confidence: 99%

A 3D scene acquisition and reconstruction system via optical axial scanning

Dong

Liu

et al. 2023

Third Optics Frontier Conference (OFS 2023)

View full text Add to dashboard Cite

Over the past few years, 3D display technology has improved so much that it is being used in many fields, such as education, medicine and the military. 3D holographic display is seen as the ultimate solution to 3D display, but one of the problems is that there is not enough 3D content available. Conventional methods to obtain 3D content from real scenes using lightfield cameras or RGB-D cameras are complicated. Here, we proposed a 3D scene acquisition and reconstruction system based on optical axial scanning. First an electrically tunable lens (ETL) was used for high-speed focus shift (up to 2.5 ms). A CCD camera is synchronized with the ETL to acquire multi-focused image sequence of real scene. Then, The Tenengrad operator was used to obtain the focusing area of each multi-focused image, and the 3D image were obtained. Finally, the Computer-Generated Hologram (CGH) can be obtained by the layer-based diffraction algorithm. The CGH was loaded onto the space light modulator (SLM) to reconstruct the 3D holographic image. The experimental results verify the feasibility of the system. This method will expand the application of 3D holographic display in the field of education, advertising, entertainment, and other fields.

show abstract

“…Digital holography is applied to various three-dimensional (3D) applications such as microscopy [1,2], optical memory [3,4], 3D display [5,6], phase imaging [7,8], optogenetics [9,10], encryption [11], and so on. A laser light source is usually used for digital holography due to its coherency.…”

Section: Introductionmentioning

confidence: 99%

Spatially divided two-step phase-shifting method for computational optical scanning holography

Yoneda,

Matoba

2023

J. Opt.

View full text Add to dashboard Cite

Computational optical scanning holography (COSH) is one of the single-pixel incoherent digital holographic techniques; therefore, three-dimensional (3D) fluorescent objects can be measured as a digital hologram with a single-pixel detector.However, due to the requirement of a phase-shifting method to remove unnecessary components from holograms, the number of measurements of COSH is larger than the number of pixels.To reduce the number of measurements, the spatially divided phase-shifting method has been proposed.Similar to the parallel four-step phase-shifting digital holography, the spatially divided phase-shifting method can obtain four phase-shifted holograms simultaneously.However, the spatially divided phase-shifting method has a problem in that the spatial resolution is lower than the original COSH.In this paper, spatially divided two-step phase-shifting method is proposed to improve spatial resolution.The numerical evaluation results indicate the feasibility of the proposed method.

show abstract

Past, current, and future of holographic video display [Invited]

Cited by 12 publications

References 43 publications

High Resolution Multiview Holographic Display Based on the Holographic Optical Element

High Resolution Multiview Holographic Display Based on the Holographic Optical Element

A 3D scene acquisition and reconstruction system via optical axial scanning

Spatially divided two-step phase-shifting method for computational optical scanning holography

Contact Info

Product

Resources

About