Mitutoyo 378-401 WLI Plan Apo 10x Mirau Type
SKU:Code: 378-401
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- brand Mitutoyo
- type Objective Lens for WLI
- mass 220g
- magnification 10x
- working distance 6mm
- numerical aperture 0.38
- working distance 6mm
- focal length 10mm
- resolving power (Microns) 0.72
- focal depth (Microns) 60
- view field 1 0.73x0.56mm Dia
- view field 2 0.66x0.88mm
The WLI Plan Apo 10X is a precision plan apochromat objective developed for white light interferometry (WLI) applications. Designed to integrate seamlessly with the WLI Unit, this objective enables accurate surface profiling and high-resolution topography measurement.
Its advanced optical design incorporates a beam splitter and reference mirror directly inside the objective, enabling compact and stable interferometric measurements without external components. An interference fringe adjustment mechanism is included as standard, allowing precise alignment and optimisation during operation.
The compact and lightweight construction, combined with a 60 mm parfocal distance, ensures improved integration into interferometry systems while maintaining a 6 mm working distance. With a high numerical aperture of 0.38, the objective provides excellent resolution and measurement performance.
Optimised for the visible spectral range, the WLI Plan Apo 10X is ideal for precision surface analysis, metrology, and interferometric inspection applications.
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 (0.38) for improved measurement resolution
Compact and lightweight design
Parfocal distance: 60 mm for compact optical system integration
High-quality Plan Apochromat optical design
Infinity corrected
Specifications
Model: WLI Plan Apo 10X
Magnification: 10x
Working distance: 6 mm
Numerical Aperture (N.A.): 0.38
Resolving power: 0.72 µm
Focal length (f): 10 mm
Parfocal distance (P.D.): 60 mm
Applicable tube lens focal length: 100 mm
Field of view (2/3" camera): 0.66 × 0.88 mm
Field of view (WLI Unit): 0.73 × 0.56 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): 54 mm
Mass: 220 g