User Guide

490 Series Microscope
AmScope Proprietary Page 41 of 64
3.2 Objectives
Type
Model
Number
Magnification
Numerical
Aperture
(N.A.)
Rating Medium
Magnification
Marks
(Color Ring)
DIN Achromatic
Objective with
Associated N.A.
Ratings
(195mm)
A4X 4X 0.10
Air Red
A10X 10X 0.25
Air Yellow
A40X 40X 0.65
Air Light Blue
A60X 60X 0.85
Air Dark Blue
A100X 100X 1.25
Cedar Oil
White
Plan Objective
(195mm)
PA4X Plan 4X 0.10
Air Red
PA10X
Plan 10X 0.25
Air Yellow
PA40X
Plan 40X 0.65
Air Light Blue
PA100X
Plan 100X 1.25
Cedar Oil
White
3.3 Eyepieces
Eyepieces
Magnification 5X 10X 15X 16X 20X 25X
Field of View Φ18 Φ18 Φ13 Φ15 Φ11 Φ9
3.4 Darkfield Condensers
Specifications
Dry
Darkfield
Condenser
Oil
Darkfield
Condenser
Model
DK-DRY100 DK-OIL100
Numerical Aperture
(N.A.) Rating 0.7 – 0.9 1.36 – 1.25
Mounting Size (Diameter)
37mm 37mm