Mitutoyo MF Series - Objectives, Eyepieces Specification Table

6. Specifications
No. 99MBA091A
6-5
＃ mark is factory set option.
※1:Order No. is different by using line voltage.
※2 is for halogen illuminator.
6.5 Objectives, Eyepieces Specification Table
Eyepiece WF, wide field of view
Bright-field objective
WF10 x／24 WF15 x／16 WF20 x／12
M N.A. W.D.
R
(µm)
T.M.
φ
F.D .
(µm)
T.M.
φ
F.D .
(µm)
T.M.
φ
F.D .
(µm)
1 x 0.03 59 9.2
10×
24 782 15 x 16 623 20 x 12 544
3 x 0.09 77 3.1
30×
8 86.9 45 x 5.3 69.2 60 x 4 60.4
5 x 0.13 61 2.1
50×
4.8 38.3 75 x 3.2 30.9 100 x 2.4 27.3
10 x 0.21 51 1.3
100×
2.4 13 150 x 1.6 10.8 200 x 1.2 9.6
20 x 0.42 20 0.7
200×
1.2 3.3 300 x 0.8 2.7 400 x 0.6 2.4
50 x 0.55 13 0.5
500×
0.48 1.4 750 x 0.32 1.3 1000 x 0.24 1.2
100 x 0.70 6 0.4
1000×
0.24 0.8 1500 x 0.16 0.7 2000 x 0.12 0.7
Note）M ：Magnification
N.A. ：Numerical aperture
W.D. ：Working distance (mm)
R
：Resolution(µm)
T.M. ：Total magnification
φ
：Field of view（φmm）
F.D. ：Focal depth（µm）
Assuming that the resolution of human eye is 2’
R＝ λ＝0.55 µm（Standard wavelength）
F.D.＝ +
λ
2 × N.A.
λ
2（N.A.）
2
1000
7 × N.A. × T.M.