EO High Resolution Infinity Corrected Objectives
• High Resolving Power
• Long Working Distance
• Compatible with Mitutoyo Microscopes and Accessories
The EO Infinity corrected objectives offer increased resolution when compared to Mitutoyo’s M Plan Apo series
while maintaining long working distances and near-diffraction limited performance. Featuring the Mitutoyo
standard M26 x 0.706 thread and 95mm parfocal length, these objectives can be used interchangeably with
Mitutoyo objectives and accessories.
A
Plan APO A B C D E
2X 61 — 32 27.5 34
5X 61 — 32 25 34
10X 61.5 2.2 32 25.5 34
20X 75 3.2 32 26.7 34
50X 82 — 32 25.5 34
100X 92 — 32 26 36
Plan APO ULWD A B C D E
50X 74.5 — 32 25.5 34
100X 82 — 32 26 34
Max. Dia. E W.D.
D C
B
95
A
5 (4.5 for 2X) (Parfocal Distance)
Units: mm
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EO infinite
conjugate objectives
Mitutoyo
objectives
Olympus
objectives
ZEISS
objectives
Nikon
objectives
video microscopes
& accessories
compact
objectives
finite conjugate
objectives
measuring &
stereo microscopes
microscopy
cameras
EO High Resolution Infinity Corrected Objectives
Magnification A (mm) B (mm) W.D. (mm)
5X 61.0 34.0 34.0
10X 76.0 35.0 19.0
20X 82.0 34.0 13.0
EO High Resolution Infinity Corrected Objectives
5X 10X 20X
Numerical Aperture, NA: 0.225 0.45 0.60
Working Distance, WD (mm): 34.0 19.0 13.0
Focal Length (mm): 40.0 20.0 10.0
Resolution Power (μm): 1.5 0.74 0.56
Depth of Focus (μm): 10.9 2.7 1.5
Max. Field Diameter (mm): 11.0 11.0 11.0
Field of View:
⅔" Sensor (H x V) (mm): 1.8 x 1.32 0.88 x 0.66 0.44 x 0.33
½" Sensor (H x V) (mm): 1.28 x 0.96 0.64 x 0.48 0.32 x 0.24
Weight (g): 210 205 240
Stock No. / Price #58-371 £1,691.50 #58-372 £1,989.00 #58-373 £2,494.75
M26x36TPI
95.0
(Parfocal Distance)
B
W.D.
5.0
23.0
Ø32.20
Units: mm
EO Infinity-Corrected Long Working Distance Objectives
• High Quality Optics in a Plan Apochromat Design
• Long and Ultra Long Working Distance Options
• Sub-Micron Resolving Power
These objectives are made to the highest quality and standards, utilizing a strain-free optical system. They
maintain a long working distance and offer high numerical apertures. With resolving power from 5 to 0.34
microns, these objectives work for a wide array of applications. All stated magnifications are based on a tube
lens focal length of 200mm. Mounting thread is 26mm x 0.706mm pitch (36 TPI). Works with all Mitutoyo
parts and can be placed directly in a system currently utilizing Mitutoyo objectives. All dimensions are in mm.
EO Plan APO And Plan APO ULWD Series
Plan APO 2X Plan APO 5X Plan APO 10X Plan APO 20X Plan APO 50X Plan APO 100X
Plan APO ULWD
50X
Plan APO ULWD
100X
Numerical Aperture, NA: 0.055 0.14 0.28 0.42 0.55 0.8 0.42 0.55
Working Distance, WD (mm): 34 34 33.5 20 13 3 20.5 13
Focal Length (mm): 100 40 20 10 4 2 4 2
Resolving Power (μm): 5 2 1 0.7 0.5 0.34 0.7 0.5
Depth of Focus (μm): 91 14 3.6 1.6 0.9 0.4 1.6 0.9
Field of View - Dia. (mm):
Eyepiece, 24 Dia. field (mm): 12 4.8 2.4 1.2 0.48 0.24 0.48 0.24
1” Sensor (H x V): 6.4 x 4.8 2.56 x 1.92 1.28 x 0.96 0.64 x 0.48 0.256 x 0.192 0.128 x 0.96 0.256 x 0.192 0.128 x 0.96
⅔" Sensor (H x V): 4.4 x 3.3 1.76 x 1.32 0.88 x 0.66 0.44 x 0.33 0.176 x 0.132 0.088 x 0.066 0.176 x 0.132 0.088 x 0.066
½" Sensor (H x V): 3.2 x 2.4 1.28 x 0.96 0.64 x 0.48 0.32 x 0.24 0.128 x 0.096 0.064 x 0.048 0.128 x 0.096 0.064 x 0.048
Weight (g): 250 240 250 300 320 450 300 340
Stock Number #59-875 #59-876 #59-877 #59-878 #59-879 #59-880 #59-881 #59-882
Price £658.75 £561.00 £646.00 £1,521.50 £1,997.50 £2,630.75 £2,299.25 £3,034.50
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