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AmScope 340 Series User Manual

AmScope 340 Series
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14
340
Series
T
echnica
l
Parameters
Technical Terms & Concepts
Total Magnification
Total magnification of a microscope is calculated by
the magnification of the objective multiplied by the mag-
nification of the eyepieces.
-Ex: (10x Eyepieces) x (4x Objective) = 40x Total Magnification
Field of View
Linear field of view of the eyepiece divided by the magnification of the objective.
Numerical Aperture (N.A)
Calculated by n Sin α (max), the Numerical Aperture (N.A) is an important parameter that marks the
features of the objective and condensers image quality and resolution. The n is a refractive index of the medium
(air
or immersion cedar oil) between the objective lens and the specimen. The “α” is 1/2 of the angle between the
aperture on the objective and path of light. The larger the N.A, the higher the resolution of the objective (and better
quality of
the image).
Object to Primary Image Distance
The distance between the object plane and the primary image plane. The conjugate distance is fixed.
Mechanical Tube Length
The distance between the objective shoulder and the ocular shoulder.

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AmScope 340 Series Specifications

General IconGeneral
BrandAmScope
Model340 Series
CategoryMicroscope
LanguageEnglish

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