Metrology
Precise – more precise – asphericon
The most accurate measurement results from the specialist
The latest tactile and interferometric measuring instruments allow the flexible manufacturing of aspheric optics at the highest technological level. A specially developed and integrated database system enables measurement results from all manufacturing steps to be documented, evaluated precisely, and accessed at any time. A wide range of measuring instruments is used to achieve accurate measuring results. Our experienced team is looking forward to your project!
Metrology at asphericon at a glance:
- Tactile measurement up to diameters of 260 mm
- Full-surface non-contact measurement up to 420 mm
- Non-contact center thickness measurement
- Roughness measurement Ra < 0.5 nm RMS, measuring field up to 1 x 1 mm
- Measurement of freeforms: form and positional tolerances, roughness
- Measurement/position check of mounts, mounted optics and complete systems
- Confocal 3D defect characterization
Our measuring instruments
MarOpto TWI
- Fast interferometer in the production environment for surface form and radius measurement on aspheres, RMS reproducibility of < 1 nm
- Most accurate recording of medium and high-frequency errors and coma
LuphoScan 260 and 420
- Fiber optics based multi-wavelength-interferometry (MWLI®)
- Measuring range: 420 mm (diameter) by 100 mm (height)
- Longitudinal resolution: 0.1 nm
Zygo Verifire AsphereTM
- Laser based, 3-dimensional, mechanical phase shifting interferometry (6″ Fizeau interferometer) combined with heterodyne displacement interferometry
- Capability: measurement of the surface form deviation and radius of curvature of aspheric, spherical and flat optics
- Aspheric measurement performance up to 60 nm (λ/10)
MarSurf LD 120 MarWin
- Two-dimensional measuring of optically rough surfaces
- Exact reproduction of aspheres, based on a resolution of 2 nm (0.08 μin) and form deviations of less than 100 nm (4 μin)
MarSurf LD 260 Aspheric
- Highly accurate 2D / 3D measurement of optical components
- Direct measuring range up to 260 mm
- Maximum diameter up to 400 mm
- Resolution: 0.8 nm
MarForm MFU 200 Aspheric 3D
- High precision 2D / 3D measurement
- Wide measuring range up to 260 mm in diameter
- Vertical resolution of 1 nm and form deviations of <100 nm (< +/- 50 nm)
- Centering accuracy within the micro- to submicrometer range
Zygo NewViewTM 7100 and MarSurf WM 100
- Measuring of roughnesses on aspheric surfaces up to 0.5 nm
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