Biological_Microscope

The following table shows the ciptical characteri§tlcs of combinationsofeyepiecesandobjectives.Thefigureontheright
shows the performance data engraved on the obiectives.
Objective type (on the back slde) ,''
Plan Objeouve
Characte°ripstit#Objectwes
Power
N.A.
W.D.(mm)
CoverGlass
Thlckness
Pesolutlon(LJm)
10XEyepleces (FN 18)
Fbcra'
TotalPower
i;Rt,h
Actual
Ple'd ofVlew
Ftemark
Plan objective (FN 22) 4X OJO 18.5
336 40X 175.0 45
lox 025 10.6 1.34 loox 28.0 18
40X 0.65 0.6 0.17 052 400X 3.04 0.45
100XO 1.25 0.13 0.27 1000X 069 018
Oil Immersed
Worklrig cli8tence twD) . Distance between thet tclp surface or cover glass and the ob|ec[lve extremlty.
Number of aperture (NA) . The ficiure corresponcling lo the F-number of the camera Thls ls associated with the resolutlcin
and larger NA means higher resolutictn
Besolution :
Fcical depth :
(Obi.ect 9idc) :
Field number GN) :
Actual Held of view ,
Total F)ower .
ITotal mag nific;ation)
Ablllly of an objectlve for ldentifying adiacent two lines in the Image, which is expressed in terms
of the mlnlmum distance between two points on the specimen surface
ThEt clepth range of a speclmen, ln whlch focusing is obtainecl at a time. Stopping Clown the
aperture lris dlaphragm Increases the focal clepth and increasing the obieclive NA decreases it
The diameter of the image observed through an eyeplece, represented in millimeters.
Diameter of the fleld of vlew. expressed as the size on the specimen surface
Ob|ectlve magnification x Eyepiece magnification