Labomed Lx POL User Manual - page 18
7
Bertrand Lens
Lx POL comes with a Bertrand Lens that projects an interference pattern
formed at the objective rear focal plane into focus at the microscope
image plane. It is capable of examining the objective rear focal plane, to
ensure exact adjustment of the illuminating aperture diaphragm and to
view interference images. These images form in the objective rear focal
plane when an optically anisotropic specimen is viewed between cross
polarizer using a high numerical aperture objective / condenser
combination. It is ideally located between analyzer and eye pieces for an
easy in and out movement from the light path. Lx POL Bertrand lens is also
centerable with respect to the optical axis of the microscope and has
focusable mechanism for a comfortable viewing experience.
Fig. # 13 & 14
1.
Bertrand Lens Focusing Knob
2.
Bertrand Lens Operating Lever
3.
Analyzer Operating Lever
4.
Gypsum wave Plate
5.
Allen wrench for Objective centering.
6.
Allen screw for Bertrand Lens Centering.
Fig. 13 :
Bertand Lens lever (2) in out “O” position i.e. away from light
path.
Analyzer Lever (3) in out “O” position i.e. away from light
path.
Fig. 14 :
Bertand Lens lever (2) in “BL” position i.e. in light
path.
Analyzer Lever (3) in “A” position i.e. in light path.
Fig. 13
14
Fig. 14
1
2
3
4
5
6
2
3
6
Eye Pieces
Lx POL comes with a pair of Eye Pieces. One of the eyepieces has a
crosshair reticule to mark the center of the field of view and the second for
normal viewing. Orientation of the Eye Piece with respect to the Polarizer
and Analyzer is ensured by the eye tube lower that slides into the
observation Bino Body tube. These eye pieces also have a focusing
mechanism for diopter correction & foldable eye guards to prevent
ambient light from entering into your line of vision.
Fig. 12
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