M95 objective lenses have total parfocal length of 95mm and mainly used with metallurgical or industrial microscopes. This is why they are called M95. FYI, regular objective lenses in biological and metallurgical microscopes are mainly M45 (45m mm parfocal length), while there is M60 also available for some applications.
The M95 are excellent choices for long working distance microscopy optics. They have great combination of long working distance and resolution at the same time. These lenses use mainly foal length of 200mm which is written on the lens enclosure.
These lenses can easily replace Mitutoyo lenses. They use the same thread of M26.
M95 Plan APO Objectives for Metallurgical/Industrial Microscopes, Visible, NIR and NUV
The M95 objective lenses are offered at different wavelengths:
a) Visible (VIS) range (400-700nm)
b) Near Infrared (NIR) range (650-800nm) which are also suitable for VIS range
c) Near Ultraviolet range (200-400nm), which can also be used for VIS range Plan Apo 20
a) NUV Range
Name (objectives)
Magnification
Numerical aperture(N.A)
Working distance (mm)
Conjugate distance(mm)
Parfocalization
distance(mm)
Infinity M Plan APO HL Objective (NUV)
20X
0.40
17.15
∞
f T=200
95
50X
0.43
14.81
50X
0.70
3.50
b) VIS Range
Name (objectives)
Magnification
Numerical aperture (N.A)
Working distance (mm)
Conjugate distance (mm)
Parfocalization
distance (mm)
Infinity M95 Plan APO SL Objective (Visible)
2X
0.055
34.60
f=200
95
5X
0.14
44.50
∞
f T=200
95
10X
0.28
34.00
20X
0.29
31.00
50X
0.42
20.50
100X
0.55
12.50
c) Near Infra Red (NIR) Obj lenses
Name
Magnification
N.A.
W.D.(mm)
Focus
Depth of Field (μm)
Resolution
Length (mm)
(μm)
M95 Long
Working
Distance
Infinity Plan Apo NIR Objective
2x
0.055
34.6
100
91
5
5x
0.14
45
40
14
2
10x
0.28
34
20
3.5
1
20x
0.29
30.8
10
3.5
1
50x
0.42
20.5
4
1.6
0.7
d) Large-field industrial obj lenses
These are an unusual 0bjective lenses with large field of view size. There are always some special applications that appreciate such an objective lens existence.
Magnification
Model
NA
WD(mm)
f’ (mm)
R (μm)
DF (μm)
on object
(mm)
on image
(mm)
Screw
1x
MPlanApo(95)-1X
0.015
14
200
22
148
34
34
M26
2x
MPlanApo(95)-2X
0.05
20
100
6.67
133
23
46
M26
5x
MPlanApo(95)-5X
0.12
22
40
2.7
23
10
50
M26
7x
MPlanApo(95)-7X
0.22
36.4
28.57
1.25
5.7
3.6
25
M26
10x
MPlanApo(95)-10X
0.3
34
20
1.1
3.7
4.4
44
M26
10x
MPlanApo(95)-10XB
0.3
34
20
1.1
3.7
4.8
48
M26
20x
MPlanApo(95)-20X
0.3
33
10
1.1
3.7
2.5
50
M26
50x
MPlanApo(95)-50X
0.5
20.7
4
0.67
1.33
1
50
M26
100x
MPlanApo(95)-100X
0.8
4
2
0.42
0.52
0.5
50
M26
150x
MPlanApo(95)-150X
0.6
4.4
1.33
0.56
0.93
0.33
50
M26
200x
MPlanApo(95)-200X
0.65
2.2
1
0.51
0.79
0.25
50
M26
250x
MPlanApo(95)-250X
0.7
2
0.8
0.48
0.68
0.2
50
M26
500x
MPlanApo(95)-500X
0.75
1.96
0.4
0.44
0.59
0.1
50
M26
e) High Numerical Aperture NA and High Resolution NIR APO Objectives
e) High Numerical Aperture NA and High Resolution NIR APO Objectives
Near Infra Red (NIR) Obj lenses
Large Field Application
We have designed a special imaging module to get the largefield of view of 4mmx4mm, at 1.25um resolution, with both reflected illumination or transmitted light. The below image was taken using reflected light. The beads are at 16.8um size.
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