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In most applications, the dichroic beamsplitter(s) will have longpass
characteristics, so the longer wavelength of the filters should be
located in the straight through filter position, and the shorter
wavelength filters in the second/third position.
2 .2 Installing Dichroic Mirrors into the Cairn Filter Cube
To fit your dichroic mirrors into the Cairn Filter Cube remove each of the
eight screws that secure the three sections together. You will then be
able to gently pull the cube apart. There is one steel locating rod in
each part of the cube to ensure the correct alignment when it is
reassembled. Once the sections of the cube are seperated remove the
dichroic holder and place the dichroic mirror(s) (active side down) into
the rectangular recess(es). Then simply replace the holder and
reassemble the cube and tighten the screws.
2.3
Inserting the Cairn Filter Cube into the OptoSplit III
The Cairn filter cube is designed to be easily accessible in order to
facilitate quick and easy changes of filter sets. Access to the filter cube
mount is gained by removing the access panel using the two handles
to pull gently and firmly. The filter cube mount will now be visible. The
mount attached to the rear of the Cairn Filter Cube is designed to mate
with the bracket on the internal wall of the OptoSplit III, so that the
small handle on top of the cube will be facing out. Once the Cairn Filter
Cube is mounted successfully, replace the access panel using the two
handles. (See over for diagram.)
Remove the 8 screws and
seperate the three sections.
Remove the dichroic holders and
carefully place the mirror(s) in
the recess(es) active side down.
Re-assemble the cube
and replace the screws.
