Mitutoyo 378-403 WLI Plan Apo 50x Mirau Type
SKU:Code: 378-403
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- brand Mitutoyo
- type Objective Lens for WLI
- mass 300g
- magnification 50x
- working distance 2mm
- numerical aperture 0.7
- working distance 2mm
- focal length 2mm
- resolving power (Microns) 0.39
- focal depth (Microns) 60
- view field 1 0.14x0.11mm Dia
- view field 2 0.13x0.18mm
The WLI Plan Apo 50X is a high-performance plan apochromat objective designed specifically for white light interferometry (WLI) applications. Engineered to match the WLI Unit, this objective enables highly accurate surface profiling and topography measurement at high magnification.
Its optical design integrates a beam splitter and reference mirror directly inside the objective, allowing compact interferometric measurements without external optical components. An interference fringe adjustment mechanism is included as standard, enabling precise alignment and optimisation during measurement.
The objective features a high numerical aperture of 0.70, delivering excellent resolution and measurement precision for detailed surface analysis. With a compact design and 60 mm parfocal distance, it allows efficient integration into interferometric systems while maintaining a 2 mm working distance suitable for high-magnification metrology applications.
Optimised for the visible spectral range, the WLI Plan Apo 50X is ideal for precision surface metrology, micro-topography measurement, and advanced inspection tasks.
Key Features
Designed specifically for white light interferometry (WLI)
Beam splitter and reference mirror integrated inside the objective
Interference fringe adjustment mechanism included as standard
High numerical aperture (0.70) for enhanced resolution
Compact and lightweight design
Parfocal distance: 60 mm for compact system integration
High-quality Plan Apochromat optical design
Infinity corrected
Specifications
Model: WLI Plan Apo 50X
Magnification: 50x
Working distance: 2 mm
Numerical Aperture (N.A.): 0.70
Resolving power: 0.39 µm
Focal length (f): 2 mm
Parfocal distance (P.D.): 60 mm
Applicable tube lens focal length: 100 mm
Field of view (2/3" camera): 0.13 × 0.18 mm
Field of view (WLI Unit): 0.14 × 0.11 mm
Observation mode: Interferometer
Glass compensation: No
Laser applications: No
Spectral range: Visible (VIS)
Mount: RMS (20.32 mm × 36 TP)
Outer diameter: 40 mm
Mirror tube length (excluding mounting screws): 58 mm
Mass: 300 g