Optospin IV0 pages

OptoSpin

D A T A S H E E T

Fast spinning and stepping filter wheel

The Cairn Optospin IV continues our long
tradition in filter wheel design, dating back
to the 1980s, but taking full advantage of the
continuing developments in motor and control
technology that have taken place since then.
It continues our tried and tested approach of
mounting the motor directly within the hub of
the filter wheel, in order to maintain a compact
size (no motor bulge!) and to minimise the inertial and other losses associated with geared
connections. Our previous design of this type
used a relatively small wheel with 12.5mm
diameter filters in order to further reduce the
inertia - and hence the response time - but by
using a newer and much more powerful type of
motor, we have been able to obtain similar performance with this 25mm filter design.

APPLICATIONS
t Fluorescence Imaging
t High Speed Ratiometric imaging
t Visual Physiology
Spectrophotometry
t

Low-vibration adjunct to electrophysiology

KEY BENEFITS
t Continuous spinning up to 10,000 rpm (1msec per
filter), set by internal or external reference frequency
t Stepping times down to 30msec between adjacent
filters, 50msec between opposite ones

50

20

t Compact size, only 100 x 100 x 35mm
t Two filter wheels can be mounted within the same
overall 35mm optical path length

35

100

C-Mount

100

Simple filter loading system (leaves camera in
place)
Six standard 25mm filter positions per wheel
Paired wheels can simulate a single ten-position
wheel, with substantial speed advantage

OptoSpin Overall dimensions

Control via USB or digital interface
Control box can drive up to four wheels

email: sales@cairn-research.co.uk tech@cairn-research.co.uk

+44(0)1795 590140 www.cairn-research.co.uk