Journals > > Topics > 3d holographic display
3d holographic display|14 Article(s)
Advances in the light field displays based on integral imaging and holographic techniques (Invited Paper)
Nam Kim, Md. Ashraful, Le Thanh, Anh-Hoang Phan, Mei-Lan Piao, and Munkh-Uchral Erdenebat
Light field displays comprise three-dimensional (3D) visual information presentation devices capable of providing realistic and full parallax autostereoscopic images. In this letter, the recent advances in the light field displays based on integral imaging (II) and holographic techniques are presented. Several advanced approaches to demonstrate the light field displays including viewing angle enhancement techniques of the II display, a fast hologram generation method using graphics processing unit (GPU) and multiple WRPs, and a holographic microscopy to display the living cells are reported. These methods improve some important constraints of the light field displays and add new features. Light field displays comprise three-dimensional (3D) visual information presentation devices capable of providing realistic and full parallax autostereoscopic images. In this letter, the recent advances in the light field displays based on integral imaging (II) and holographic techniques are presented. Several advanced approaches to demonstrate the light field displays including viewing angle enhancement techniques of the II display, a fast hologram generation method using graphics processing unit (GPU) and multiple WRPs, and a holographic microscopy to display the living cells are reported. These methods improve some important constraints of the light field displays and add new features.
Chinese Optics Letters
- Publication Date: May. 20, 2014
- Vol. 12, Issue 6, 060005 (2014)
Real-time pupil tracking backlight system for holographic 3D display (Invited Paper)
Hyon-Gon Choo, Minsik Park, Hyun-Eui Kim, Chanyeol Bae, Byung Gyu, Hwi Kim, Kyungae Moon, Jinwoong Kim, and Joonku Hahn
We propose an automatic three-dimensional (3D) pupil tracking backlight system for holographic 3D display system with large image size and full-parallax accommodation effect. The proposed tracking module is applied to a holographic 3D display system with two sets of directional holographic imaging module composed of 2×2 large scale lens array and 22-inch high-resolution liquid crystal display 3D panel. System architecture is described and experimental results are presented. We propose an automatic three-dimensional (3D) pupil tracking backlight system for holographic 3D display system with large image size and full-parallax accommodation effect. The proposed tracking module is applied to a holographic 3D display system with two sets of directional holographic imaging module composed of 2×2 large scale lens array and 22-inch high-resolution liquid crystal display 3D panel. System architecture is described and experimental results are presented.
Chinese Optics Letters
- Publication Date: May. 28, 2014
- Vol. 12, Issue 6, 060004 (2014)
Color holographic display based on azo-dye-doped liquid crystal (Invited Paper)
Xiao Li, Chao Ping, Yan Li, Xinhong Jiang, Hongjing Li, Wei Hu, Gufeng He, Jiangang Lu, and Yikai Su
A multiplexed holographic display video has been achieved by using a passive azo-dye-doped liquid crystal (LC) cell. Holograms formed in this cell can be refreshed in the order of several milliseconds. By angular multiplexing technique, dynamically multiplexed holographic videos are realized. Moreover, the reconstructed RGB images are merged into a color image, which illustrates the possibility of a color holographic three-dimensional (3D) display by holographic multiplexing of the LC cell. A multiplexed holographic display video has been achieved by using a passive azo-dye-doped liquid crystal (LC) cell. Holograms formed in this cell can be refreshed in the order of several milliseconds. By angular multiplexing technique, dynamically multiplexed holographic videos are realized. Moreover, the reconstructed RGB images are merged into a color image, which illustrates the possibility of a color holographic three-dimensional (3D) display by holographic multiplexing of the LC cell.
Chinese Optics Letters
- Publication Date: May. 20, 2014
- Vol. 12, Issue 6, 060003 (2014)
Three-dimensional display technologies in wave and ray optics: a review (Invited Paper)
Hao Zhang, Yan Zhao, Liangcai Cao, and Guofan Jin
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. 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.
Chinese Optics Letters
- Publication Date: May. 20, 2014
- Vol. 12, Issue 6, 060002 (2014)
Angle-deviation optical profilometer
Chen-Tai Tan, Yuan-Sheng Chan, Zhen-Chin Lin, and Ming-Hung Chiu
We propose a new optical profilometer for three-dimensional (3D) surface profile measurement in real time. The deviation angle is based on geometrical optics and is proportional to the apex angle of a test plate. Measuring the reflectivity of a parallelogram prism allows detection of the deviation angle when the beam is incident at the nearby critical angle. The reflectivity is inversely proportional to the deviation angle and proportional to the apex angle and surface height. We use a charge-coupled device (CCD) camera at the image plane to capture the reflectivity profile and obtain the 3D surface profile directly. We propose a new optical profilometer for three-dimensional (3D) surface profile measurement in real time. The deviation angle is based on geometrical optics and is proportional to the apex angle of a test plate. Measuring the reflectivity of a parallelogram prism allows detection of the deviation angle when the beam is incident at the nearby critical angle. The reflectivity is inversely proportional to the deviation angle and proportional to the apex angle and surface height. We use a charge-coupled device (CCD) camera at the image plane to capture the reflectivity profile and obtain the 3D surface profile directly.
Chinese Optics Letters
- Publication Date: Jul. 09, 2021
- Vol. 9, Issue 1, 011201 (2011)
Plasma ion-assisted deposition in UV filters
Xiaojun Yin, Shuaifeng Zhao, Shuguo Fei, Peng Gao, Ruisheng Wang, Jing Ma, Shu Song, and Bangjun Liao
Plasma ion-assisted deposition (PIAD) process for ultraviolet (UV)-induced transmission and full dielectric thin-film filters in the 200–400 nm spectral region is described. The design and manufacturing method of the UV filters are introduced. The UV filters exhibit deep blocking (> optical density (OD)5–OD6), high transmittance, and stable environment durability. These UV filters pass 10 cycles in an aggravated temperature-humidity test, according to ISO9022-2 and MIL-STD-810F standards. Plasma ion-assisted deposition (PIAD) process for ultraviolet (UV)-induced transmission and full dielectric thin-film filters in the 200–400 nm spectral region is described. The design and manufacturing method of the UV filters are introduced. The UV filters exhibit deep blocking (> optical density (OD)5–OD6), high transmittance, and stable environment durability. These UV filters pass 10 cycles in an aggravated temperature-humidity test, according to ISO9022-2 and MIL-STD-810F standards.
Chinese Optics Letters
- Publication Date: Aug. 17, 2021
- Vol. 8, Issue s1, 59 (2010)
Design of broadband and wide-angle antireflection for solar cells
Wenliang Wang, and Honggang Hao
Antireflection coatings are very important for high-efficiency solar cells. An ideal antireflection structure should lead to zero reflection loss on solar-cell surfaces over an extended solar spectral range for all angles of incidence. Based on the optical thin-film theory, two multilayer structures are adopted as initial stacks in two conditions, respectively. With the aid of a conjugate graduate optimized method, the incident angles of antireflection coating are 0°–60°, the working wavelength range is 400–1200 nm, and two broadband and wide-angle antireflections are designed. The results show that they can all evidently reduce residual reflection. Antireflection coatings are very important for high-efficiency solar cells. An ideal antireflection structure should lead to zero reflection loss on solar-cell surfaces over an extended solar spectral range for all angles of incidence. Based on the optical thin-film theory, two multilayer structures are adopted as initial stacks in two conditions, respectively. With the aid of a conjugate graduate optimized method, the incident angles of antireflection coating are 0°–60°, the working wavelength range is 400–1200 nm, and two broadband and wide-angle antireflections are designed. The results show that they can all evidently reduce residual reflection.
Chinese Optics Letters
- Publication Date: Aug. 17, 2021
- Vol. 8, Issue s1, 35 (2010)
High-dimensional sensitivity analysis of complex optronic systems by experimental design: applications to the case of the design and the robustness of optical coatings
Olivier Vasseur, Magalie Claeys-Bruno, Michel Cathelinaud, and Michelle Sergent
We present the advantages of experimental design in the sensitivity analysis of optical coatings with a high number of layers by limited numbers of runs of the code. This methodology is effective in studying the uncertainties propagation, and to qualify the interactions between the layers. The results are illustrated by various types of filters and by the influence of two monitoring techniques on filter quality. The sensitivity analysis by experimental design of optical coatings is useful to assess the potential robustness of filters and give clues to study complex optronic systems. We present the advantages of experimental design in the sensitivity analysis of optical coatings with a high number of layers by limited numbers of runs of the code. This methodology is effective in studying the uncertainties propagation, and to qualify the interactions between the layers. The results are illustrated by various types of filters and by the influence of two monitoring techniques on filter quality. The sensitivity analysis by experimental design of optical coatings is useful to assess the potential robustness of filters and give clues to study complex optronic systems.
Chinese Optics Letters
- Publication Date: Aug. 17, 2021
- Vol. 8, Issue s1, 21 (2010)
Analysis of the magnitude and distribution of low loss thin film
Dandan Liu, Huasong Liu, Yiqin Ji, Fuhao Jiang, and Deying Chen
Total loss test of the high-reflective (HR) film coated on super-smooth silica substrate by dual ion beam sputtering (DIBS) is based on the well-established cavity ring-down technique. Scattering and transmittance are tested by integral scattering and transmittance measuring apparatus, after which absorption is calculated. At 632.8 nm wavelength, the magnitude and distribution of thin film loss are researched for both s- and p-polarization, and the reflectivities are 0.99986, 0.99997, and 0.99962, respectively. Based on the analysis, the tested scattering is less than its real value. Total loss test of the high-reflective (HR) film coated on super-smooth silica substrate by dual ion beam sputtering (DIBS) is based on the well-established cavity ring-down technique. Scattering and transmittance are tested by integral scattering and transmittance measuring apparatus, after which absorption is calculated. At 632.8 nm wavelength, the magnitude and distribution of thin film loss are researched for both s- and p-polarization, and the reflectivities are 0.99986, 0.99997, and 0.99962, respectively. Based on the analysis, the tested scattering is less than its real value.
Chinese Optics Letters
- Publication Date: Aug. 17, 2021
- Vol. 8, Issue s1, 105 (2010)
Method to improve the performance of reflectance diffuse optical imaging based on polygonal optical fibers arrangement
Weitao Li, Zhiyu Qian, and Ting Li
In order to improve the performance of reflectance diffuse optical imaging (rDOI), a novel polynomial geometry (PG) of optical fibers arrangement is proposed. Polynomial geometry is based on the hexagonal geometry (HG) and multicentered double-density (MD) mode. The overlapping sensitivity matrix, area ratio (AR), reconstruction image, two-absorber model, and contrast-to-noise ratio (CNR) in different depths are used to evaluate the performance of PG. The other three geometries including HG, rectangular geometry (RG), and MD mode are also compared with PG. The deformation of the reconstruction images is evaluted by circular ratio (CR). The results prove that the proposed PG has high performance and minimum deformation in quality of reconstruction image in rDOI. In order to improve the performance of reflectance diffuse optical imaging (rDOI), a novel polynomial geometry (PG) of optical fibers arrangement is proposed. Polynomial geometry is based on the hexagonal geometry (HG) and multicentered double-density (MD) mode. The overlapping sensitivity matrix, area ratio (AR), reconstruction image, two-absorber model, and contrast-to-noise ratio (CNR) in different depths are used to evaluate the performance of PG. The other three geometries including HG, rectangular geometry (RG), and MD mode are also compared with PG. The deformation of the reconstruction images is evaluted by circular ratio (CR). The results prove that the proposed PG has high performance and minimum deformation in quality of reconstruction image in rDOI.
Chinese Optics Letters
- Publication Date: Jul. 08, 2021
- Vol. 7, Issue 9, 852 (2009)
Topics
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20