A laser receiver for detecting the position of incidence of a beam of laser light
thereon includes a first photodetector and a second photodetector aligned in series
with each other and spaced apart from each other by a gap. If the laser is evenly
distributed between the two photodetectors, then the laser position will be set
as the correct position and a corresponding signal will be displayed. However,
if the first photodetector detects more light than the second photodetector, then
a signal will also be displayed to inform the user that more laser is being projected
onto the first photodetector. On the other hand, if the second photodetector detects
more light than the first photodetector, then a signal will be displayed to inform
the user that more laser being projected onto the second photodetector. These signals
will assist users to adjust the laser receiver to accurately position the laser.