Objective lens for white light interference measurement WLI Plan Apo
WLI-Unit
Scheduled for autumn 2024 release
Features
> New design matching the WLI-Unit > Ensures long working distance while more compact and lighter-weight (parfocal 60 mm) > High NA, high resolution > Plan apochromat
> Beam splitter and reference mirror mounted inside objective lens > Interference fringe adjustment mechanism equipped as standard
Dimensions
WLI Plan Apo 2.5X
WLI Plan Apo 5X
WLI Plan Apo 10X
WLI Plan Apo 25X
WLI Plan Apo 50X
ø40
ø40
ø40
ø40
58.5
M20.32/36 山
M20.32/36 山
M20.32/36 山
M20.32/36 山
ø35
22.1
ø38
ø38
ø38
ø38
Lens specifications
Mirror tube length
FOV (mm)
Applicable tube lens f (mm)
Parfocalizing distance (mm)
Mass (g)
W.D. (mm)
Model Code No.
Outermost diameter Mounting screws
f (mm)
N.A.
R (µm)
2/3 inch camera
(excluding mounting screws)
WLI-Unit
WLI Plan Apo
36.4 ( excluding interference unit ) 58.5 ( Max )
WLI Plan Apo 2.5X 378-400
0.14
13.0
40
2.0
60
2.94×2.25 2.64×3.52
100
47
320
WLI Plan Apo 5X 378-005 WLI Plan Apo 10X 378-401 WLI Plan Apo 25X 378-402 WLI Plan Apo 50X 378-403
0.28
8.0
20
0.98
60
1.46×1.12
1.32×1.76
100
52
40
210
RMS / 20.32 mm ×36 TP
0.38
6.0
10
0.72
60
0.73×0.56 0.66×0.88
100
54
40
220
0.50
3.6
4
0.55
60
0.29×0.22 0.26×0.35
100
57
40
290
0.70
2.0
2
0.39
60
0.14×0.11
0.13×0.18
100
58
40
300
•Resolution values in the specifications above are calculated based on reference wavelength ( λ = 0.55 μm).
17
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