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Product Description

Bio-Plus Microscope

Bio-Plus Microscope (AVI-2111)

EYEPIECES : High quality paired eyepieces 10 x (standard), 15 x (optional) extra wide field, high eye reliet type.
Mangnification Field Diameter Eyepoint
10 x WF (Imported Glass) 18.0mm 25.0mm
15 x WF 13.0mm 12.0mm
Objective : Choice of partocal, parcentered, Semi Plan (SP), Achromatic objectives in magnification range, 4x, 10 x and retractable 40 x and 100x oil.
Objective Type Magnification N.A Working Distance
Achromatic 4x 0.10 8.00mm
Semi Plan (SP) 10x 0.25 2.00mm
(Imported Glass) 40x Spring 0.65 0.14mm
Terms describing the optical features of microscope
Total Magnification : Total magnification of a microscope is the individual magnifying power of the objective multiplied by that of the eyepieces.

Numerical Aperture (N.A) : One of the important factors determining the efficiency of condenser and objectives. it is represented by the formula. ( N.A. = n sin a )

Where n is the retractive index of a medium and ‘a’ is half of the maximum angle at which the light rays enter or leave the lens from or to a focussecd object point on the optical axis.

Working Distance : Clearance between the from of the objective and the upper surface of the cover glass when the image of a specimen is brought into sharp focus. Generally, the higher the magnifying power of the objective, the shorter the working distance.

Field Diameter : Diameter (MM) of the field of view which can be observed through the eyepiece. Indication 10x on the top of the eyepiece shows that eyepiece magnification is 10x.

Qty :

 
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