Polarised light can highlight any strain or stress within glass, and with many machine vision camera makers, such as Lucid Vision, now offering models based on Sony's global shutter sensor with built-in polarising filters
, there are plenty of camera options for glass inspection systems imaging polarised light.
can provide some interesting colour experiments.
b It requires the patient to wear polarising filters
in the spectacles allow wearers to switch between normal and telescopic vision.
Every DermLite features a magnification lens, light-emitting diode (LED) lighting, and most have polarising filters
for glare reduction.
Elsewhere, Keely Portway investigates the miniature cameras found in endoscopes (page 16), while Matthew Dale examines inspection using polarised light (page 20), as camera manufacturers release models based on Sony's new CMOS sensor with built-in polarising filters
'Most are familiar with using a polarising filter
in front of a camera to reduce glare from objects like metal, which is a very simple application of polarisation.