Thick Lens Optics

Science ◽  
1913 ◽  
Vol 38 (976) ◽  
pp. 367-367
Author(s):  
P. G. Nutting
Keyword(s):  
2021 ◽  
Vol 7 (8) ◽  
pp. 138
Author(s):  
Marina Carbone ◽  
Davide Domeneghetti ◽  
Fabrizio Cutolo ◽  
Renzo D’Amato ◽  
Emanuele Cigna ◽  
...  

Wearable Video See-Through (VST) devices for Augmented Reality (AR) and for obtaining a Magnified View are taking hold in the medical and surgical fields. However, these devices are not yet usable in daily clinical practice, due to focusing problems and a limited depth of field. This study investigates the use of liquid-lens optics to create an autofocus system for wearable VST visors. The autofocus system is based on a Time of Flight (TOF) distance sensor and an active autofocus control system. The integrated autofocus system in the wearable VST viewers showed good potential in terms of providing rapid focus at various distances and a magnified view.


2009 ◽  
pp. 99-99
Author(s):  
PC Mukherjee
Keyword(s):  

2021 ◽  
Author(s):  
George Asimellis
Keyword(s):  

2001 ◽  
Vol 34 (3) ◽  
pp. 343-357 ◽  
Author(s):  
A. D. Stoica ◽  
M. Popovici ◽  
C. R. Hubbard

Neutron imaging with bent crystals is considered in the linear approximation of neutron optics. A matrix formalism analogous to that of conventional lens optics is developed. Various imaging conditions are discussed in relation to the crystal deformation type and to possible applications in neutron scattering. All focusing conditions known previously are included as particular cases. Arrangements combining high resolution in imaging with high resolution in scattering are examined. The concept of Bragg mirrors as devices for non-dispersive imaging is introduced. The most powerful application appears to be that of Bragg mirrors combined with the time-of-flight method. Imaging with a thick packet of silicon wafers at the spatial resolution of a single thin wafer is demonstrated.


2018 ◽  
Vol 57 (10) ◽  
pp. 1
Author(s):  
Shelby D. V. Ament ◽  
Richard N. Pfisterer
Keyword(s):  

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