Non-contact measurement of ocular microtremor using laser speckle

2010 ◽  
Author(s):  
E. Kenny ◽  
D. Coakley ◽  
G. Boyle
Keyword(s):  
Laser Speckle ◽  
Contact Measurement ◽  
Ocular Microtremor

scholarly journals Ocular microtremor measurement using laser-speckle metrology

2013 ◽  
Vol 18 (1) ◽  
pp. 016010 ◽  
Author(s):  
Emer Kenny ◽  
Davis Coakley ◽  
Gerard Boyle
Keyword(s):  
Laser Speckle ◽  
Speckle Metrology ◽  
Microtremor Measurement ◽  
Ocular Microtremor

scholarly journals Ocular microtremor laser speckle metrology

2009 ◽  
Author(s):  
M. Al-Kalbani ◽  
E. Mihaylova ◽  
N. Collins ◽  
V. Toal ◽  
D. Coakley ◽  
...  
Keyword(s):  
Laser Speckle ◽  
Speckle Metrology ◽  
Ocular Microtremor

Evaluation of skin blood flow using laser speckle phenomena (V)

1986 ◽  
Vol 6 (3) ◽  
pp. 335-338
Author(s):  
Hitoshi Fujii ◽  
Toshimitsu Asakura ◽  
Yasuhiro Harada ◽  
Kunihiko Nohira ◽  
Yoshihisa Shintomi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Skin Blood Flow ◽  
Laser Speckle

Remote turbidity measurement with a laser reflectometer

1998 ◽  
Vol 37 (12) ◽  
pp. 255-261 ◽  
Author(s):  
Mark Johnson
Keyword(s):  
Water Surface ◽  
Free Water ◽  
Optical Scattering ◽  
Flowing Water ◽  
Water Stream ◽  
Water Turbidity ◽  
Water Colour ◽  
Contact Measurement ◽  
Optical Instruments ◽  
Better Than

A simple, laser-based reflectometer is described for the measurement of water turbidity via 180° optical scattering. Applications exist both in clean source waters (0-1000NTU) with a minimum detectable turbidity better than 1NTU, and in dense wastewater primary-clarifier sludges. The non-contact measurement is performed from a distance at least up to 10m, substantially avoiding the usual window fouling problems of optical instruments. By measuring directly in the process, through a free water surface or on the side of a flowing water stream, the difficulties of transporting sample to the instrument are also avoided. Extensions to be described allow measurement also of water colour.

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