Labomed Lx POL, Руководство пользователя

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5
Extinction Adjustment
1. Remove all compensator; specimen & test plates out of light path.
2. Swing in 10x Objective in the light path.
3. Swing out Top lens of Flip Top Abbe Condenser from light Path
(Ref. Fig. 08)
4.
Bring preset vibration direction Analyzer plate by moving Analyzer
lever to ‘A’ position (Ref. Fig 14 Part-3)
5. Bring polarizer to light Path (Ref. Fig 25) loosen polarizer lock
screw for free 360 degree rotation of polarizer.
6.
Rotate polarizer until you achieve complete extinction. Lock
Polarizer by tightening Polarizer locking screw.
6
Conoscopical Observation
1. Bring an objective of your choice between 20x to 100x in the light
path. Bring the Pol specimen into focus.
2.
Keep the abbe condenser in its lowest position.
3. Swing in Top lens of Flip Top Abbe Condenser in the light path.
4. Open the aperture diaphragm
5. Swing in lever of Bertrand lens to ‘BL’ Ref. Fig 14 Part (2) and focus
image by rotating Bertrand Lens focusing knob Ref. Fig 14 Part (1)
Note: If the conoscopic image is dark, then move the condenser upward
to find the suitable position where the image is brightest.
Conscopic image may not be at the centre of Eye piece cross line
intersection. However it will have no measurable effect due to u n i v e r s a l
infinity optical design.
19
Conoscopic
Image
Cross Lines
R
R
Polarizer away from Light Path
Fig. 25
Fig. 25-a
Fig. 26