Author Affiliations
Abstract
1 School of Electronic and Computer Engineering, Peking University, Shenzhen 518055, China
2 State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
In this review, the principle and the optical methods for light-field display are introduced. The light-field display is divided into three categories, including the layer-based method, projector-based method, and integral imaging method. The principle, characteristic, history, and advanced research results of each method are also reviewed. The advantages of light-field display are discussed by comparing it with other display technologies including binocular stereoscopic display, volumetric three-dimensional display, and holographic display.
100.6890 Three-dimensional image processing 120.2040 Displays Chinese Optics Letters
2019, 17(11): 111001
Author Affiliations
Abstract
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
A 360° light field 3D display system is presented, which consists of a liquid crystal display, a novel triplet lenses array, and a holographic functional screen (HFS). The mapping relationship among pixels, 3D objects, and viewing positions are investigated. The aberration analysis of the single lens is carried out both in the simulation and the experiment, which shows that it cannot provide an excellent 3D image to the viewers. In order to suppress the aberrations, “the primary aberration theory” and “the damped least-squares method” are used for optical analysis and lens design. A 3D image with aberration correction can be viewed around the proposed display system.
120.2040 Displays 080.3620 Lens system design Chinese Optics Letters
2017, 15(12): 121201
Author Affiliations
Abstract
1 Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, China
2 Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, China
3 Department of Electric and Computer Engineering, Hong Kong University of Science and Technology, Kowloon 999077, Hong Kong ASR, China
4 Institute of Photonic System, National Chiao Tung University, Tainan 711, China
In this study, a full-color emission red–green–blue (RGB) quantum-dot (QD)-based micro-light-emitting-diode (micro-LED) array with the reduced optical cross-talk effect by a photoresist mold has been demonstrated. The UV micro-LED array is used as an efficient excitation source for the QDs. The aerosol jet technique provides a narrow linewidth on the micrometer scale for a precise jet of QDs on the micro-LEDs. To reduce the optical cross-talk effect, a simple lithography method and photoresist are used to fabricate the mold, which consists of a window for QD jetting and a blocking wall for cross-talk reduction. The cross-talk effect of the well-confined QDs in the window is confirmed by a fluorescence microscope, which shows clear separation between QD pixels. A distributed Bragg reflector is covered on the micro-LED array and the QDs’ jetted mold to further increase the reuse of UV light. The enhanced light emission of the QDs is 5%, 32%, and 23% for blue, green, and red QDs, respectively.
(120.2040) Displays (160.4236) Nanomaterials (230.2090) Electro-optical devices (230.3670) Light-emitting diodes. Photonics Research
2017, 5(5): 05000411
Author Affiliations
Abstract
Beijing Engineering Research Center for Mixed Reality and Advanced Display, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China
In this Letter, a new, constrained color-matching algorithm that removes the color variations is presented, in which all the color gamut of the projectors is mapped into a common gamut that can be produced by all the devices in the system. The smoothness constraints on the difference between two adjacent pixels are taken into account to calculate the luminance attenuation map of each pixel in the overlapping region to achieve luminance seamlessness. The experimental results demonstrate the validity and superiority of this correction algorithm.
100.2000 Digital image processing 120.2040 Displays 330.0330 Vision, color, and visual optics Chinese Optics Letters
2015, 13(9): 093301
Author Affiliations
Abstract
Multiple three-dimensional (3D) display technologies are reviewed. The display mechanisms discussed in this paper are classified into two categories: holographic display in wave optics and light field display in ray optics, which present the 3D optical wave field in two different ways. Key technical characteristics of the optical systems and the depth cues of human visual system are analyzed. It is to be expected that these 3D display technologies will achieve practical applications with the increase of the optical system bandwidth.
120.2040 Displays 100.6890 Three-dimensional image processing 090.2870 Holographic display Chinese Optics Letters
2014, 12(6): 060002
Author Affiliations
Abstract
A new type of light field display is proposed using a head-mounted display (HMD) and a micro structure array (MSA, lens array or pinhole array). Each rendering point emits abundant rays from different directions into the viewer’s pupil, and at one time the dense light field is generated inside the exit pupil of the HMD through the eyepiece. Therefore, the proposed method not only solves the problem of accommodation and convergence conflict in a traditional HMD, but also drastically reduces the huge data in real three-dimensional (3D) display. To demonstrate the proposed method, a prototype is developed, which is capable of giving the observer a real perception of depth.
110.0110 Imaging systems 120.2040 Displays 330.7322 Visual optics, accommodation 330.1400 Vision - binocular and stereopsis Chinese Optics Letters
2014, 12(6): 060010
Author Affiliations
Abstract
A light field three-dimensional (3D) display with multi-projectors and a concave screen is proposed. The system sets the viewing area at the center of the concave screen, making viewers enter the center of the system to watch 3D scene around them. The surrounded 3D scene provides viewers a feast of enhanced immersive experience. The light field principle, rendering algorithm, selection of viewing area and experimental results are discussed in the letter, showing the potential of being an all-around-type immersive 3D display by employing more projectors.
110.0110 Imaging systems 120.2040 Displays Chinese Optics Letters
2014, 12(6): 060009
Author Affiliations
Abstract
Based on light field reconstruction and motion recognition technique, a penetrable interactive floating 3D display system is proposed. The system consists of a high-frame-rate projector, a flat directional diffusing screen, a high-speed data transmission module, and a Kinect somatosensory device. The floating occlusion-correct 3D image could rotate around some axis at different speeds according to user’s hand motion. Eight motion directions and speed are detected accurately, and the prototype system operates efficiently with a recognition accuracy of 90% on average.
120.2040 Displays 100.6890 Three-dimensional image processing Chinese Optics Letters
2014, 12(6): 060007
Author Affiliations
Abstract
We propose a large parallax barrier by use of aperture grille. Main advantages of using aperture grille include no reflection and no absorption in apertures, as well as wide viewing angle. These advantages are investigated with theoretical calculations and experiments by use of several kinds of LED panels, such as a fine-pitch LED panel and a 140-inch large LED panel. Limitations of viewing angle by parallax barrier are analyzed in conventional black stripes on a transparent substrate type and in aperture grille type.Experimental results show use of aperture grille increases contrast and reduce reflection on the aperturesurface.
120.2040 Displays 330.1400 Vision - binocular and stereopsis Chinese Optics Letters
2014, 12(6): 060006
Author Affiliations
Abstract
A multi-view three-dimensional (3D) display provides a more realistic experience than a two-view 3D display. Therefore, a multi-view 3D display with high brightness based on a parallax barrier is proposed. The parallax barrier in the 3D display has a gradient transmittance with enhanced frequency characteristic, which indicates that the aperture ratio of the parallax barrier can be increased, thereby improving brightness. Gradient transmittance is also helpful in reducing crosstalk. A prototype of the 3D display is developed. Experimental result shows that the 3D display has higher brightness than a conventional display. In addition, crosstalk is limited at a low level.
110.0110 Imaging systems 220.2740 Geometric optical design 120.2040 Displays Chinese Optics Letters
2013, 11(12): 121101
