Diffraction effects incorporated design of a parallax barrier for a high-density multi-view autostereoscopic 3D display

Yoon, Ki-Hyuk; Ju, Heongkyu; Kwon, Hyunkyung; Park, Inkyu; Kim, Sung Kyu

doi:10.1364/oe.24.004057

Cited by 9 publications

(4 citation statements)

References 19 publications

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“…The CSF recorded as s(f ) describes the relationship between spatial frequency of the object and the visual sensitivity, which can be expressed by Equation (21).…”

Section: Optimization For Moiré Patternmentioning

confidence: 99%

See 1 more Smart Citation

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Zhang¹,

Wang²,

Zhou³

et al. 2017

PIER

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Abstract-Illumination optics in emerging naked-eye 3D display, especially in time-spatial multiplexing, or directional backlight naked-eye 3D display system, is systematically examined. Key issues in directional backlight system include: 1) Directional transmission of the left-and right-eye images to the corresponding viewing zone with small crosstalk; 2) The luminance on the screen should be homogeneous even for the viewers moving around. In this paper, we propose an adaptive optimization solution based on root mean square (RMS) for the design of illumination optics of the naked-eye 3D system. Based on the designed free-form backlight illumination, the overall design schemes for both single-user and multi-user naked-eye 3D display are proposed and demonstrated. By utilizing the novel dynamic synchronized backlight technique, the temporal crosstalk is effectively brought into control. The display defects such as the dark bands appearing at the joints of the lens array or at the middle of the Fresnel lens are simulated numerically and tested experimentally, hence providing effective design guidelines for the optical components as well as their fabrication error tolerance. Additionally, we propose a continuous backlight technique to improve the luminance homogeneity. Furthermore, a quantitative evaluation mechanism for the moiré pattern based on the Fourier analysis method, by introducing the contrast sensitivity function (CSF), is presented. A novel arrangement of a quasirandom RGB sub-pixel array is proposed to reduce the visibility of moiré pattern. As a result, full HD glassless 3D display suitable for glassless virtual and augmented realities is demonstrated with an unprecedented display quality.

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“…The CSF recorded as s(f ) describes the relationship between spatial frequency of the object and the visual sensitivity, which can be expressed by Equation (21).…”

Section: Optimization For Moiré Patternmentioning

confidence: 99%

“…As shown in Fig. 1, the usual approach is to put a parallax barrier [19][20][21] or lenticular lens [22] as a spatial-multiplexing component. In these systems, the pixels colored as blue on the LCD will display the left eye image, and the right eye image will be loaded simultaneously by the pixels colored as red.…”

Section: Introductionmentioning

confidence: 99%

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Zhang¹,

Wang²,

Zhou³

et al. 2017

PIER

View full text Add to dashboard Cite

show abstract

“…Several approaches are adopted to implement an autostereoscopic display system. One is spatial multiplexing using parallax barriers [5][6][7][8][9] or lenticular lenses [10][11][12][13] to separate parallax images and project them into different positions. This technique stands out for its easy realization on common flat panel display.…”

Section: Introductionmentioning

confidence: 99%

Autostereoscopic display with bicylindrical lens based on temporal-spatial multiplexing

Wang

2022

中国光学快报

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An autostereoscopic display system with a bicylindrical lens based on temporal-spatial multiplexing technique is introduced in this paper. The system comprises a directional scanning backlight, a liquid crystal display panel with high refreshing rate, and an eye tracking device. The directional scanning backlight consists of an LED board, two lenticular lens arrays with matching periods, a parallax barrier film, and other optical films. One of the lenticular lenses is a bicylindrical lens designed to reduce aberration, hence achieving better image quality. A prototype is set up based on the proposed structure. A series of experiments are conducted, and the overall performance of the prototype is evaluated. The LEDs are divided into 10 groups that form 10 view zones. On the one hand, it achieves full resolution in both 2D and 3D display modes. On the other hand, the viewing angle is increased to ±26 deg . Most importantly, the crosstalk is low. The minimum crosstalk is 6%, and the maximum crosstalk is 8.8% at a viewing angle of ±22 deg .

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“…In order to see the stereoscopic images, the viewer has to be positioned within a very narrow angle that is nearly perpendicular to the screen. More seriously, low brightness and inevitable resolution loss are the main obstacles to the development of these technologies [8]. Polarizing glasses are also widely used to separate the left and right images with low crosstalk value.…”

Section: Introductionmentioning

confidence: 99%

Wide Color Gamut Time-Multiplexed Stereoscopic Display Based on Scanning Backlight Unit Utilizing Sectional Light Guide Plates

Wang

2019

IEEE Access

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A time-multiplexed stereoscopic display with a wide color gamut is fabricated and introduced in this paper. It comprises a scanning backlight unit (SBLU), a 120Hz liquid crystal display (LCD) panel and a pair of LCD shutter glasses equipped with two switching lens (Manufactured by NVIDIA, Model: 3D VISION 2). We use sectional light guide plates to compress the light angle. We use blue LEDs (Domain wavelength: 450nm) to replace the traditional phosphor white LEDs used in the backlight. The blue LEDs are fixed on the edges of the sectional light guide plates, and the quantum dot-polymer (QDP) film is placed on the surface of sectional plates. The SBLU and auxiliary glasses could work together with the LCD panel. All of these components can be controlled by the vertical synchronization signal transmitted from the graphics card. The color gamut of our prototype is improved. According to ITU-R Recommendation BT.2020 (Rec.2020), the color gamut is widely extended to 77.61%. The display's ability to express color has been improved by using quantum dot (QD) material. The display brightness through the switching lens is about 120 nit. The crosstalk decreases to about 0.9%. INDEX TERMS Time-multiplexed stereoscopic, color gamut, scanning backlight, crosstalk.

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Diffraction effects incorporated design of a parallax barrier for a high-density multi-view autostereoscopic 3D display

Cited by 9 publications

References 19 publications

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Illumination Optics in Emerging Naked-Eye 3d Display (Invited Review)

Autostereoscopic display with bicylindrical lens based on temporal-spatial multiplexing

Wide Color Gamut Time-Multiplexed Stereoscopic Display Based on Scanning Backlight Unit Utilizing Sectional Light Guide Plates

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