Photon-nanosieve for ultrabroadband and large-angle-of-view holograms

2017 ◽  
Vol 11 (3) ◽  
pp. 1700025 ◽  
Author(s):  
Kun Huang ◽  
Hong Liu ◽  
Guangyuan Si ◽  
Qian Wang ◽  
Jiao Lin ◽  
...  
Keyword(s):  
Large Angle ◽  
Angle Of View

scholarly journals An Augmented Reality Head-Up Display System with a Wide-View Eyebox

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Pei-Jung Wu ◽  
Chih-Hao Chuang ◽  
Chien-Yu Chen ◽  
Jeng-Han Wu ◽  
Bor-Shyh Lin
Keyword(s):  
Large Angle ◽  
Optical Element ◽  
Splitting Function ◽  
Virtual Image ◽  
Projection System ◽  
Image Projection ◽  
Holographic Optical Element ◽  
Angle Of View ◽  
On The Road ◽  
Left Image

This study proposes to apply the combination of two 90-degree prisms and a holographic optical element to an image-dividing element, divide an image into three through the virtual image projection system, and accurately project the images to 160 cm behind the windshield. In order to distinguish the left image, middle image, and right image at the horizontal direction, the 90-degree prism is first utilized for horizontally deflecting the light, a holographic optical element is then used for presenting the vertical deflection of the image, and finally, the images are horizontally arranged as a real image on the diffuser. An image-dividing element is eventually integrated to the virtual image projection system. Then, the divided images are made as a virtual image which is projected to 160 cm behind the windshield to combine with the street scene. The horizontal angle of view of an eyebox is increased from 2.51° to 7.22°, and the size of the eyebox is 31.68 cm × 12.48 cm, allowing a wide-view laser-based head-up display with the large-angle beam-splitting function being successfully designed. It would not affect the field of view on the road, and this system could reduce the space and be arranged easily in a vehicle. Therefore, this proposed system is suitable for the aftermarket.

Reliability of the Flexible Display STN LCD Based Environmental Test

2009 ◽  
Author(s):  
Pan-Dong Fan ◽  
Qiang Miao ◽  
Ping Yang ◽  
Quayle Chen ◽  
Tom Xue ◽  
...  
Keyword(s):  
Failure Modes ◽  
Test Procedure ◽  
Large Angle ◽  
Cold Test ◽  
Electronic Packages ◽  
Practical Application ◽  
Flexible Display ◽  
High Brightness ◽  
Environmental Test ◽  
Angle Of View

In recent years, the application of Flexible Display (FD) is increasing dramatically due to its high brightness, high contrast, and large angle of view. Also because the substrate polymer material is flexible, FD is easily and widely used in various electronic packages. The competition of products based on these technologies such as electronic paper and mobile screen can be improved. In most of these applications, failure of FD can directly lead to failure of device. However, reliability data on FD are not commonly available in published literature, and the reliability of FD in practical application has not been studied very well. This paper presents an experimental study of FD with focus on its reliability under varying temperature and humidity conditions. The purpose of this paper is to investigate the failure mode of FD based on environmental test including steady damp heat test, dry heat test, cyclic damp heat test and cold test. The failure modes are discussed and the analysis is presented. In this study, all tests are conducted with visual inspections during each test procedure.

Insect–Human Hybrid Eye (IHHE): an adaptive optofluidic lens combining the structural characteristics of insect and human eyes

Lab on a Chip ◽  
2014 ◽  
Vol 14 (18) ◽  
pp. 3594-3602 ◽  
Author(s):  
Kang Wei ◽  
Hansong Zeng ◽  
Yi Zhao
Keyword(s):  
Structural Characteristics ◽  
Large Angle ◽  
Compound Eyes ◽  
Angle Of View ◽  
Human Eyes

An optofluidic device named the “Insect–Human Hybrid Eye” (IHHE), which combines the architectural merits of both human camera eyes and insect compound eyes, is presented to implement imaging with a large angle of view and adaptive focusing along any direction within the field.

scholarly journals Photonic jets for highly efficient mid-IR focal plane arrays with large angle‐of‐view

2017 ◽  
Vol 25 (25) ◽  
pp. 31174 ◽  
Author(s):  
Farzaneh Abolmaali ◽  
Aaron Brettin ◽  
Andrew Green ◽  
Nicholaos I. Limberopoulos ◽  
Augustine M. Urbas ◽  
...  
Keyword(s):  
Focal Plane ◽  
Large Angle ◽  
Focal Plane Arrays ◽  
Highly Efficient ◽  
Angle Of View

Parallel Detection of Electron Energy Loss Spectra in Direct Mode

1990 ◽  
Vol 48 (2) ◽  
pp. 82-83
Author(s):  
Eckhard Quandt ◽  
Stephan laBarré ◽  
Andreas Hartmann ◽  
Heinz Niedrig
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Energy Resolution ◽  
Large Angle ◽  
Maximum Energy ◽  
Semiconductor Detectors ◽  
Parallel Detection ◽  
Photodiode Arrays ◽  
Electron Energy Loss ◽  
Electron Energy Loss Spectra

Due to the development of semiconductor detectors with high spatial resolution -- e.g. charge coupled devices (CCDs) or photodiode arrays (PDAs) -- the parallel detection of electron energy loss spectra (EELS) has become an important alternative to serial registration. Using parallel detection for recording of energy spectroscopic large angle convergent beam patterns (LACBPs) special selected scattering vectors and small detection apertures lead to very low intensities. Therefore the very sensitive direct irradiation of a cooled linear PDA instead of the common combination of scintillator, fibre optic, and semiconductor has been investigated. In order to obtain a sufficient energy resolution the spectra are optionally magnified by a quadrupole-lens system.The detector used is a Hamamatsu S2304-512Q linear PDA with 512 diodes and removed quartz-glas window. The sensor size is 13 μm ∗ 2.5 mm with an element spacing of 25 μm. Along with the dispersion of 3.5 μm/eV at 40 keV the maximum energy resolution is limited to about 7 eV, so that a magnification system should be attached for experiments requiring a better resolution.

Strain measurement by means of bend contour microscopy

1989 ◽  
Vol 47 ◽  
pp. 210-211
Author(s):  
Philip D. Hren
Keyword(s):  
Strain Measurement ◽  
Large Angle ◽  
Single Crystal Silicon ◽  
Convergent Beam Electron Diffraction ◽  
Zone Axis ◽  
Silicon Membrane ◽  
Crystal Silicon ◽  
Contour Pattern ◽  
Convergent Beam ◽  
Low Symmetry

The pattern of bend contours which appear in the TEM image of a bent or curled sample indicates the shape into which the specimen is bent. Several authors have characterized the shape of their bent foils by this method, most recently I. Bolotov, as well as G. Möllenstedt and O. Rang in the early 1950’s. However, the samples they considered were viewed at orientations away from a zone axis, or at zone axes of low symmetry, so that dynamical interactions between the bend contours did not occur. Their calculations were thus based on purely geometric arguments. In this paper bend contours are used to measure deflections of a single-crystal silicon membrane at the (111) zone axis, where there are strong dynamical effects. Features in the bend contour pattern are identified and associated with a particular angle of bending of the membrane by reference to large-angle convergent-beam electron diffraction (LACBED) patterns.

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