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Series name
UIS2 series
MPLAPON
M Plan Apochromat
(OFN26.5) *
LCPLFLN-LCD
Long working distance
M Plan Achromat
(OFN26.5) *
Abbreviations used for objective
M
Ex)
M: For metal (without cover)
LM: For long working distance metal
SLM: For super long working distance metal
LC: For observation through glass
Glossary in optical performance table
Working distance:
Numerical aperture: Important value that determines the performances (resolution, focal depth and brightness) of the objective.
Resolution:
Focal depth:
Field number:
Actual field:
64
Optical performance
Magnification
Notation
MPlanApoN
LCPlanFLN-LCD 20XLCD
50XLCD
100XLCD
PL
FL
(Plan)
None: Achromat: Corrects the aberration by 2 wavelengths (blue and red).
FL: Semi-apochromat: Corrects the color aberration in the visible range
APO: Apochromat: Corrects the color aberration in the entire visible range
PL Plan: Corrects the image plane curvature around the field.
Distance between the top surface of the sample and the tip of the objective.
Resolution ...................Increases in proportion to the numerical aperture.
Focal depth ...............Decreases in proportion to the numerical aperture.
Brightness ...................Increases in proportion to the square of the numerical aperture. (comparing with the
same magnification)
Indicates the limit where the objective can identify two approaching images using the distance between
2 points on the sample surface.
Indicates the sample depth focused at the same time. The depth increases when the aperture diaphragm
is narrowed down and decreases when the numerical aperture of the objective becomes larger.
Indicates the diameter of the image area visible by the eyepiece in mm.
Indicates the diameter of the field area on the sample surface in mm.
Working
Cover glass
Numerical
distance
thickness
aperture
(mm)
50X
0.95
0.35
100X
0.95
0.35
0.45
7.4-8.3
0.7
2.2-3
0.85
0.9-1.2
N
100
Number: Objective magnification
None: UIS objective
N: UIS2 objective
(from blue-violet to red).
(from violet to red).
Eyepiece
WHN10X (FN22)
Actual field
Total
(mm)
of view
magnification
(mm)
0
500X
0.44
0
1000X
0.22
0-1.2
200X
1.1
0-1.2
500X
0.44
0-0.7
1000X
0.22
BD
None: For brightfield
BD: For brightfield/darkfield
BDP: For brightfield/darkfield, polarization
IR: For IR
SWH10X (FN26.5)
Actual field
Total
of view
magnification
(mm)
500X
0.53
1000X
0.27
200X
1.33
500X
0.53
1000X
0.27
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