Product category:
Machine Safety Components
News Release from: Tapeswitch | Subject: Blueview
Edited by the Engineeringtalk Editorial
Team on 28 April 2006
Blue LED system indicates infra-red
alignment
Blueview is a simple but very effective way of allowing Guardscan light curtains to be optically aligned.
In order to work reliably the emitter and receiver units of all infra-red safety light curtains need to be optically aligned correctly Often, during initial installation or after the light curtain has accidentally been knocked out of alignment, this can be difficult to do simply because the infra-red light is invisible and the beams have such small diameters
This article was originally published on Engineeringtalk on 27 Sep 2001 at 8.00am (UK)
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The Blueview system overcomes this by passing the light from harmless blue LEDs through the same lenses used in the infra-red curtain.
It is then quite simple to look at the LEDs and find their optical alignment axes.
Aligning the blue LEDs will then automatically align the infra-red curtain.
This means that anyone, even a nonspecialist, can quickly identify and correct any alignment problems and get machinery back into production Blueview uses four LEDs, one each at the top and bottom of the emitter and one each at the top and bottom of the receiver.
This allows the curtain to be aligned not only so that the emitter is positioned to transmit the maximum signal towards the receiver but also so that the receiver is in alignment for the optimum focus position to receive it.
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