Two-dimensional and three-dimensional see-through screen using holographic optical elements

2012 ◽  
Author(s):  
Keehoon Hong ◽  
Jisoo Hong ◽  
Jiwoon Yeom ◽  
Byoungho Lee
Keyword(s):  
Three Dimensional ◽  
Two Dimensional ◽  
Optical Elements ◽  
Holographic Optical Elements

scholarly journals Two-dimensional and three-dimensional transparent screens based on lens-array holographic optical elements

2014 ◽  
Vol 22 (12) ◽  
pp. 14363 ◽  
Author(s):  
Keehoon Hong ◽  
Jiwoon Yeom ◽  
Changwon Jang ◽  
Gang Li ◽  
Jisoo Hong ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Two Dimensional ◽  
Optical Elements ◽  
Lens Array ◽  
Holographic Optical Elements

scholarly journals Optical See-through 2D/3D Compatible Display Using Variable-Focus Lens and Multiplexed Holographic Optical Elements

Photonics ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 297
Author(s):  
Qinglin Ji ◽  
Huan Deng ◽  
Hanle Zhang ◽  
Wenhao Jiang ◽  
Feiyan Zhong ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Display Device ◽  
3D Display ◽  
Optical Elements ◽  
Reconstruction Process ◽  
Holographic Optical Elements ◽  
Projection Display ◽  
Spherical Wavefront ◽  
2D And 3D ◽  
Variable Focus

An optical see-through two-dimensional (2D)/three-dimensional (3D) compatible display using variable-focus lens and multiplexed holographic optical elements (MHOE) is presented. It mainly consists of a MHOE, a variable-focus lens and a projection display device. The customized MHOE, by using the angular multiplexing technology of volumetric holographic grating, records the scattering wavefront and spherical wavefront array required for 2D/3D compatible display. In particular, we proposed a feasible method to switch the 2D and 3D display modes by using a variable-focus lens in the reconstruction process. The proposed system solves the problem of bulky volume, and makes the MHOE more efficient to use. Based on the requirements of 2D and 3D displays, we calculated the liquid pumping volume of the variable-focus lens under two kinds of diopters.

Recent progress in see-through three-dimensional displays using holographic optical elements [Invited]

2015 ◽  
Vol 55 (3) ◽  
pp. A71 ◽  
Author(s):  
Changwon Jang ◽  
Chang-Kun Lee ◽  
Jinsoo Jeong ◽  
Gang Li ◽  
Seungjae Lee ◽  
...  
Keyword(s):  
Recent Progress ◽  
Three Dimensional ◽  
Optical Elements ◽  
Holographic Optical Elements

360-degree three-dimensional flat panel display using holographic optical elements

2015 ◽  
Author(s):  
Hirofumi Yabu ◽  
Yusuke Takeuchi ◽  
Kayo Yoshimoto ◽  
Hideya Takahashi ◽  
Kenji Yamada
Keyword(s):  
Three Dimensional ◽  
Flat Panel Display ◽  
Flat Panel ◽  
Optical Elements ◽  
Holographic Optical Elements

High Resolution Microscopy of Multi-Layered Biological Crystals

1982 ◽  
Vol 40 ◽  
pp. 80-83
Author(s):  
H.A. Cohen ◽  
T.W. Jeng ◽  
W. Chiu
Keyword(s):  
High Resolution ◽  
Low Dose ◽  
Three Dimensional ◽  
Data Interpretation ◽  
Two Dimensional ◽  
Biological Objects ◽  
Density Maps ◽  
Density Map ◽  
Complex Crystal ◽  
High Resolution Microscopy

This tutorial will discuss the methodology of low dose electron diffraction and imaging of crystalline biological objects, the problems of data interpretation for two-dimensional projected density maps of glucose embedded protein crystals, the factors to be considered in combining tilt data from three-dimensional crystals, and finally, the prospects of achieving a high resolution three-dimensional density map of a biological crystal. This methodology will be illustrated using two proteins under investigation in our laboratory, the T4 DNA helix destabilizing protein gp32*I and the crotoxin complex crystal.

Instrumentation For Quantitative Microscopy

1977 ◽  
Vol 35 ◽  
pp. 206-209
Author(s):  
B. Ralph ◽  
A.R. Jones
Keyword(s):  
Volume Fraction ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Automatic Data ◽  
Phase Volume Fraction ◽  
Statistical Confidence ◽  
Resultant Data ◽  
Automatic Data Collection ◽  
Third Dimension ◽  
Evolution Of Microstructure

In all fields of microscopy there is an increasing interest in the quantification of microstructure. This interest may stem from a desire to establish quality control parameters or may have a more fundamental requirement involving the derivation of parameters which partially or completely define the three dimensional nature of the microstructure. This latter categorey of study may arise from an interest in the evolution of microstructure or from a desire to generate detailed property/microstructure relationships. In the more fundamental studies some convolution of two-dimensional data into the third dimension (stereological analysis) will be necessary.In some cases the two-dimensional data may be acquired relatively easily without recourse to automatic data collection and further, it may prove possible to perform the data reduction and analysis relatively easily. In such cases the only recourse to machines may well be in establishing the statistical confidence of the resultant data. Such relatively straightforward studies tend to result from acquiring data on the whole assemblage of features making up the microstructure. In this field data mode, when parameters such as phase volume fraction, mean size etc. are sought, the main case for resorting to automation is in order to perform repetitive analyses since each analysis is relatively easily performed.

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