Wide field OCT based microangiography in living human eye (Conference Presentation)

2016 ◽  
Author(s):  
Qinqin Zhang ◽  
Chieh-Li Chen ◽  
Zhongdi Chu ◽  
Anqi Zhang ◽  
Lin An ◽  
...  
Keyword(s):  
Wide Field ◽  
Human Eye

scholarly journals Wide-field optical model of the human eye with asymmetrically tilted and decentered lens that reproduces measured ocular aberrations

Optica ◽  
2015 ◽  
Vol 2 (2) ◽  
pp. 124 ◽  
Author(s):  
James Polans ◽  
Bart Jaeken ◽  
Ryan P. McNabb ◽  
Pablo Artal ◽  
Joseph A. Izatt
Keyword(s):  
Optical Model ◽  
Wide Field ◽  
Human Eye ◽  
Ocular Aberrations

Wide field OCT angiography by using swept source OCT in living human eye

2017 ◽  
Author(s):  
Qinqin Zhang ◽  
Chieh-Li Chen ◽  
Zhongdi Chu ◽  
Ruikang K. Wang
Keyword(s):  
Oct Angiography ◽  
Wide Field ◽  
Swept Source ◽  
Human Eye ◽  
Swept Source Oct

scholarly journals Asymmetric wide-field optical model of the human eye with tilted and decentered crystalline lens that reproduces experimentally measured aberrations: errata

Optica ◽  
2018 ◽  
Vol 5 (11) ◽  
pp. 1461 ◽  
Author(s):  
James Polans ◽  
Bart Jaeken ◽  
Ryan P. McNabb ◽  
Pablo Artal ◽  
Joseph A. Izatt
Keyword(s):  
Optical Model ◽  
Crystalline Lens ◽  
Wide Field ◽  
Human Eye

Super Wide Field of View Head Mounted Display Using Catadioptrical Optics

2006 ◽  
Vol 15 (5) ◽  
pp. 588-598 ◽  
Author(s):  
Hajime Nagahara ◽  
Yasushi Yagi ◽  
Masahiko Yachida
Keyword(s):  
Mixed Reality ◽  
Peripheral Vision ◽  
Field Of View ◽  
Optical Simulation ◽  
Wide Field ◽  
Stereoscopic Images ◽  
Human Eye ◽  
Head Mounted Display ◽  
Head Mounted Displays ◽  
Wide Fov

Many virtual reality, mixed reality, and telepresence applications use head mounted displays (HMD). HMD systems are portable and can display stereoscopic images. However, the field of view (FOV) of commercial HMD systems is too narrow for conveying the feeling of immersion. The horizontal FOV is typically around 60°, significantly narrower than that of the human eye. In this paper, we propose new display optics for a super wide FOV head mounted display. The proposed optics consists of an ellipsoidal and a hyperboloidal mirror that will display distortionless images by using the characteristics of the mirrors, even if the image has a large FOV. We constructed a prototype HMD system with a 180° horizontal × 60° vertical FOV that includes the peripheral vision of the human eye. The FOV has a 60° × 60° overlap area that can display stereoscopic images. We estimated the resolution, focus, and aberration of the prototype in an optical simulation and experimentally confirmed that the prototype displays distortionless wide FOV images.

A New System For Optomanual Semiautomatic Quantitative Image Analysis

1977 ◽  
Vol 35 ◽  
pp. 210-211
Author(s):  
H.P. Rohr
Keyword(s):  
Image Analysis ◽  
Volume Density ◽  
List Type ◽  
Distribution Analysis ◽  
Type Number ◽  
Point Counting ◽  
Human Eye ◽  
Quantitative Image ◽  
Point Density ◽  
Electronic Counting

Today, in image analysis the broadest possible rationalization and economization have become desirable. Basically, there are two approaches for image analysis: The image analysis through the so-called scanning methods which are usually performed without the human eye and the systems of optical semiautomatic analysis completely relying on the human eye.The new MOP AM 01 opto-manual system (fig.) represents one of the very promising approaches in this field. The instrument consists of an electronic counting and storing unit, which incorporates a microprocessor and a keyboard for choice of measuring parameters, well designed for easy use.Using the MOP AM 01 there are three possibilities of image analysis:the manual point counting,the opto-manual point counting andthe measurement of absolute areas and/or length (size distribution analysis included).To determine a point density for the calculation of the corresponding volume density the intercepts lying within the structure are scanned with the light pen.

STM studies of crystal growth

1991 ◽  
Vol 49 ◽  
pp. 374-375
Author(s):  
M. G. Lagally
Keyword(s):  
Crystal Growth ◽  
Molecular Beam ◽  
Chemical Vapor ◽  
Sputter Deposition ◽  
Field Of View ◽  
Scanning Tunneling ◽  
Wide Field ◽  
Tunneling Microscopy ◽  
Wide Field Of View ◽  
The One

It has been recognized since the earliest days of crystal growth that kinetic processes of all Kinds control the nature of the growth. As the technology of crystal growth has become ever more refined, with the advent of such atomistic processes as molecular beam epitaxy, chemical vapor deposition, sputter deposition, and plasma enhanced techniques for the creation of “crystals” as little as one or a few atomic layers thick, multilayer structures, and novel materials combinations, the need to understand the mechanisms controlling the growth process is becoming more critical. Unfortunately, available techniques have not lent themselves well to obtaining a truly microscopic picture of such processes. Because of its atomic resolution on the one hand, and the achievable wide field of view on the other (of the order of micrometers) scanning tunneling microscopy (STM) gives us this opportunity. In this talk, we briefly review the types of growth kinetics measurements that can be made using STM. The use of STM for studies of kinetics is one of the more recent applications of what is itself still a very young field.

The Human Eye and the Photographic Camera

1913 ◽  
Vol 76 (1960supp) ◽  
pp. 51-51
Author(s):  
A. Gleichen
Keyword(s):  
Human Eye ◽  
Photographic Camera
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