Loading Filters; Filter Orientation; Filter Cups And Filter Holders; Figure 2-3. Filter Wheel Connection - Sutter Instrument LAMBDA 10-B Operation Manual

CAUTION: DO NOT CONNECT OR DISCONNECT THE CABLES BETWEEN
THE CONTROLLER AND THE MECHANICAL UNITS (FILTER WHEELS AND/OR
SHUTTERS) WHILE POWER IS ON.
Please allow at least 20 seconds after turning the unit off before disconnecting the
mechanical units. Failure to do this may result in damage to the electronics.

2.5 Loading Filters

2.5.1 Filter Orientation

The two sides of a filter are usually not identical due to differences in their surface coatings.
Some form of labeling will be present to differentiate the two sides if this is the case. It is
important to refer to the filter manufacturer's documentation to interpret the labeling and
determine the proper orientation relative to the light source.

2.5.2 Filter Cups and Filter Holders

At each filter position on the filter wheel is a filter cup assembly to hold one filter. The
LAMBDA 10-B 25-mm filter wheel also comes with two removable filter holders that can be
placed into the optical pathway to accommodate "fixed" filters, such as neutral density
filters. The style of the filter holder will either be "drop in" if no shutter is installed (Item 6
in Figure 1-1), or "slide in" if a shutter is installed (Item 6 in Figure 1-2).
There are at least two components installed into each filter cup or holder before the
LAMBDA 10-B is shipped: A threaded retaining ring to secure the filter into the cup (or
holder), and a spacer ring. In all but one of the filter cups, and in one of the filter holders,
there will also be a blanking disc. Figure 2-4 depicts these items using the drop-in filter
holder as an example.

Figure 2-3. Filter wheel connection

LAMBDA 10-B OPERATION MANUAL – REV. 1.20Q (20230227)
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