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For the remaining images, an additional method of XY alignment on the three
combiner cubes
allows fine adjustment of the
position of each image for precise pixel alignment in your imaging software.
D) Centre the remaining images
Often MultiCam units are supplied with populated filter cubes, however (if required), these can be installed using the guidance
notes below. Please note for all our emission splitter range we only recommend Chroma Ultra-Flat 2mm dichroic mirrors to
minimise distortion. Please let us know if you require any filter assistance.
E) Filter cube assembly
1. Identify
port (2)
* and
combiner cube (1)
2.
With the
rectangular aperture
still in view, centre the image on
port (2)
(using the 1.5mm allen key provided) by
adjusting the
H&V controls
on
combiner cube (1)
3.
Similarly, centre the camera on
port (3)
with the
H&V controls
on
combiner cube (2)
4.
Finally, centre
port (4)
with the
H&V controls
on
combiner cube (3)
5.
Note all the reflected images will be mirrored and will need to be flipped in your imaging software if overlaid.
6.
Replace the calibration cubes with populated filter cubes for multi-channel imaging (see section E).
7.
Open the
rectangular aperture
to slightly larger than the camera(s) field of view to minimize scattered light.
* MultiCam units may also be supplied with three output ports as an option, with upgrade potential for a forth camera. If so, port
2 will be absent, however, alignment steps for all other ports remain the same.
In addition to the two positions in the filter cube, there is also an
auxiliary holder
on each camera output port to accommodate
interference (bandpass) filters, long pass filters, ND filters, rotating polarisers, cylindrical lenses or Z-plane shifting lenses. The
holders supplied with the unit have an angled thread (indicated by angled line on the top) to avoid back reflections from filter
surfaces, however if using lenses or a polariser, then a flat holder is required. These can be purchased separately.
F) Auxiliary component mounts
Please consult filter manufacturers instructions regarding orientation of the filter.
Installing Dichroic Mirrors into the Cairn Filter Cube
Installing Filters into the Cairn Filter Cube
Remove the 4 screws and
seperate the two halves.
Replace the top half and
resecure the screws.
Place the dichroic, followed by
spring clip in
the recess
Remove the dichroic spring clip
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Turn the locking
ring anticlockwise
to remove it.
Carefully place
the recess.
Replace the locking
ring and rotate it
clockwise to secure.
