摘要:
An optical detector is disclosed, which is adapted to measure the opacity of media. The detector comprises a light means and a light sensor, arranged so as to have a media path there between. The light source has a drive means, which is actively adjustable, during use, for detecting media of different opacities, so as to maintain a substantially constant sensor output.
摘要:
A note skew detector, for use in a note transport mechanism of an Automated teller Machine (ATM) is described. The detector comprises a light source and a single optical sensor, optically coupled via a pair of optical wave-guides arranged to have an air gap there between so as to provide a note transport path between the said wave-guides. The wave-guides are further arranged to provide a first optical path and a second, distinct, optical path between said light source and said sensor.
摘要:
An optical detector is disclosed, which is adapted to measure the opacity of media. The detector comprises a light means and a light sensor, arranged so as to have a media path there between. The light source has a drive means, which is actively adjustable, during use, for detecting media of different opacities, so as to maintain a substantially constant sensor output.
摘要:
An optical media detector, for use in a media transport mechanism, the detector comprising a light source and an optical sensor, is described. The light source and sensor are optically coupled via two distinct optical paths which are formed in part by a pair of optical light guides, each of which is formed into part of a pinch roller adapted to contact or being close to contacting media being transported.