How To Use The 30X Lens (Including Polarization) - scope LSU VL-7EX II User Manual

Handheld Microscope Users Guide
Non-Contact Viewing
What if you want to examine an object that you cannot touch? Perhaps it's behind glass (such
as a fish in an aquarium), or the object is wet, or it has a complex structure that cannot be
touched (such as the inside of a small geode). The contact tips of the 30X and 50X lenses can
be depressed by twisting the conical tip. Since you will not touch the object, it is best to put the
scope in the stand before trying this "non-contact" setup (see "Using the Stand" for setup
instructions).
Viewing sea star with contact tip. Notice that the mouth
of the sea star is not in focus because the scope isn't
able to touch it.

How to Use the 30X Lens (Including Polarization)

The 30X lens works the same way as the 50X lens,
except that its lights can be polarized (a process that
reduces unwanted reflection/glare). When first using the
30X lens, change the light setting to "B" using the
switch on the side of the scope. (If you are using any
other lens except for the 30X, this setting will turn the
lights off.) It is recommended to begin with unpolarized
light, because the details are best seen in most objects
with this light setting.
To polarize the lights, change the light switch to the "A" position. This should greatly reduce the
reflection. (There is a short delay when changing light settings, so don't be alarmed if the lights
turn off temporarily.) Try looking at different objects with polarized and unpolarized light, and
notice the differences.
18
Viewing sea star with contact tip depressed. When the
contact tip is depressed, the scope can see further into
the sea star, bringing the mouth into focus.
light switch