Time-of-flight distance sensor with MOSFET lowpass filter as key element for suppression of ambient light

2010 ◽  
Vol 46 (2) ◽  
pp. 138 ◽  
Author(s):  
G. Zach ◽  
H. Zimmermann
Keyword(s):  
Time Of Flight ◽  
Flight Distance ◽  
Ambient Light ◽  
Lowpass Filter ◽  
Distance Sensor

Time-Of-Flight distance sensor with enhanced dynamic range

2008 ◽  
Vol 5 (3/4) ◽  
pp. 246
Author(s):  
Daniel Van Nieuwenhove ◽  
Ward Van Der Tempel ◽  
Riemer Grootjans ◽  
Maarten Kuijk
Keyword(s):  
Dynamic Range ◽  
Time Of Flight ◽  
Flight Distance ◽  
Distance Sensor

scholarly journals Can Liquid Lenses Increase Depth of Field in Head Mounted Video See-Through Devices?

2021 ◽  
Vol 7 (8) ◽  
pp. 138
Author(s):  
Marina Carbone ◽  
Davide Domeneghetti ◽  
Fabrizio Cutolo ◽  
Renzo D’Amato ◽  
Emanuele Cigna ◽  
...  
Keyword(s):  
Control System ◽  
Clinical Practice ◽  
Augmented Reality ◽  
Time Of Flight ◽  
Depth Of Field ◽  
Liquid Lenses ◽  
Good Potential ◽  
Distance Sensor ◽  
Limited Depth ◽  
Lens Optics

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.

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