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1: Introduction
CUV-TLC-IL Imaging Lens
The CUV-TLC-IL is an AR-coated fused silica imaging lens doublet with SMA 905 connector and fiber
optic steering plate. The CUV-TLC-IL imaging lens doublet is identical to the CUV-TLC-CL, except that
an additional lens is snapped into place to shorten the focal length. The imaging lens images the end of
the optical fiber into the cuvette, or focuses an image of the center of the cuvette onto a fiber. Again, the
steering plate can be used to adjust the position of the focused image inside the cuvette, and to maximize
the detected signal. The secondary knurled ring shown below permits movement of the focused image to
nearly any depth in the cuvette. Imaging lens doublets are usually used for fluorescence measurements,
although they are also useful for absorbance measurements on small sample volumes. The CUV-TLC-IL
can be easily converted to the CUV-TLC-CL by removing the attached Convergence lens.
CUV-TLC-MP Spherical Mirror Plug
The spherical mirror plug replaces a fiber with a spherical mirror that reflects an image of the illuminated
volume at the center of the cuvette back onto itself. Thus the mirror plug can return the excitation beam
back through the sample for a second pass, or permit one detector to collect the light from opposite sides
of the cuvette. For some fluorescence experiments, use of two mirror plugs can nearly quadruple the
measured signal. Purchase the spherical mirror plug to perform fluorescence measurements when weak
signals are anticipated.
CUV-TLC-FH Filter Holder Assembly
The CUV-TLC-FH filter holder assembly with collimating lens, SMA 905 connector, and fiber optic
steering plate places standard 1-inch filters in a light-tight compartment after a collimating lens. The light-
tight cap backs away and the filters, mounted in a filter holder insert, are lifted out of the assembly. The
filter holder insert holds a single 1-inch round optical filter or a stack of such up to a thickness of 3/8 of
an inch. One insert is provided with the filter holder assembly, although other inserts can be purchased
separately. The filter holder assembly, mounted on a fiber optic steering plate, can be used directly in
place of a collimating lens. You can add a convergence lens to convert the filter holder assembly to an
imaging lens system.
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000-30000-000-02-0205
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