Use Of Polarized Light - Optika IM-3 Serie Manual De Instrucciones

2. Move the slider to the left or to the right in order to
insert the desired one. (Fig. 34)
FILTER
Blue Converts the color temperature of the
bulb into daylight
Green Increases the contrast in black and
white photography
Frosted Reduces lighting irregularities by creat-
ing a homogeneous illumination

9.13 Use of polarized light

1. Remove the specimen from the stage.
2. Put a mirror on the stage and get into approxima-
te focus on the mirror surface.
3. Insert polarizer and analyzer into the light path.
4. Rotate the knurled ring of the analyzer ① and,
looking into the eyepiece, reach the darkest posi-
tion available. (Fig. 35)
5. Once the dark is achieved ("extinction" or "Cros-
sed Nicol" position) it is possible to begin the
observation.
6. Remove the mirror from the stage, put a speci-
men and focus.
USE
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①
Fig. 34
Fig. 35