Olympus CX23 Gebruiksaanwijzing - Pagina 18

Blader online of download pdf Gebruiksaanwijzing voor {categorie_naam} Olympus CX23. Olympus CX23 32 pagina's. Biological microscope

Useful Information

How to track a microscopic image

Total magnification

The size of the specimen image for observation is obtained by multiplying the eyepiece magnification by the objective

magnification. This value is referred to as total magnification.

Example: Eyepiece (10X) x Objective (40X) = 400X

Resolution

Resolution represents how finely a lens is able to distinguish the details of a specimen.

Resolution is mainly determined by the ability of the objective and scarcely related to that of the eyepieces. The function

of the eyepieces is to just magnify an image already resolved by the objective.

In case total magnifications are the same, better resolution is obtained with the combinations which have higher

magnification of objective.

Field number (FN)

The field number is the diameter of the image observed through an eyepiece, indicated in millimeters.

Eyepiece 10X : 20 mm WHSZ15X-H:16 mm

Actual field of view

The actual field of view is the size of the specimen actually

observed in the microscope. This makes it possible to find out

approximate size of the specimen.

Actual field of view = Field number/Objective magnification

When the eyepiece field number 20 and the objective

magnification 10X are used, the actual field of view is equal to:

Actual field of view = 20/10 = 2.0 mm

To track an image

moving leftwards

(or to move the

specimen image

rightwards):

Direction of moving the image

To move the

specimen image

upward:

} The image observed through the microscope moves in directions

opposite to the actual up-down and left-right movements of the

specimen.

Move the slide

glass to the

left.

Move the slide

glass down.

Actual field of

view: 2.0 mm

Approx. 1.0 mm,

about half of actual

field of view.