OptiSurf® - High Precision Low-Coherence Interferometer for Center Thickness and Air Gap Measurement of UV, VIS and IR Optics
OptiSurf® is the ideal tool for non-contact center thickness and air gap measurements of single lenses, flat optics and within optical systems. The instrument is based on low coherence interferometry and measures all surface distances in an optical system with an accuracy up to 0.15 μm in one scan. In particular, the alignment of the sample with respect to the measurement axis has been greatly simplified compared to conventional systems: an innovative alignment tool together with the adjustable sample holder and the software allows even inexperienced operators to accurately align and measure lenses and optical systems. This time-saving innovation qualifies OptiSurf® for use in production.
OptiSurf® IR is the only system in the market that is capable to measure all infrared lens materials. As an update of an OptiCentric® IR system it is a perfect supplement for the high precision lens assembly processes of IR lenses.
OptiSurf® UltraPrecision
Key Features:
- Measurement accuracy of 0.15 µm for center thickness and air gaps (OptiSurf® UltraPrecision)
- Measurement in UV, VIS and IR (depending on version)
- Easy input of sample data
- Lens design import of Zemax files or OptiCentric® design files
- Statistical analysis of measurement results
- Automatic identification of lens surfaces and calculation of distances between surfaces
- Software tool for fast and easy sample alignment
- Non-contact measurement
Applications:
The OptiSurf® low-coherence interferometer measures center thicknesses and air gaps of lenses, optics and all transparent materials up to an optical thickness of 800 mm.
OptiSurf® low-coherence interferometer for center thickness and air gaps measurements
The OptiSurf® Professional Software
The OptiSurf® Professional Software for the low-coherence interferometer is perfect for the analysis of center thickness and air gap measurement of optical systems.
Key Features:
- Supports intuitive handling, alignment and measurement process
- Lens design input via OptiCentric® interface, directly from Zemax or via a lens design editor
- Automated surface identification for fast and precise measurements
- Comparison with design data and identification of deviations for use in quality control
- Statistical analysis of measurement results/ pass/fail anaylysis
- Two level user interface: for complex analysis routines in R&D phase and easy to handle operation in production
OptiSurf® Professional Software showing the measurement results
| OptiSurf® | OptiSurf® Ultra Precision | OptiSurf® IR** | |
|---|---|---|---|
| Measurement accuracy | 1 µm* | 0.15 µm* | micrometer range *** |
| Repeatability | 0.5 µm | <0.075 µm | micrometer range *** |
| Wavelength of the light source | 1.3 µm minimum of dispersion | 1.3 µm minimum of dispersion | 2.2 µm measurement of all infrared materials |
| Scanning range | up to 800 mm optical distance, larger on request | up to 800 mm optical distance, larger on request | On request *** |
| Sensors for temperature and air pressure | option | included | option |
| Computer interface | USB | USB | USB |
| Camera-based alignment tool | option | yes | option |
| Laser class | 1 | (2) | 1 |
* According to 2σ criterion for measuring 100 mm air gap between optical flats
** Available in combination with OptiCentric only
*** Depends on sample
Scope of Delivery
- Measurement head with focal length adjustment via software
- Integrated visible laser beam for aligment
- Motorized linear stage
- Sample holder with tilt & translation table
- OptiSurf® Professional Software
Upgrades & Accessories
- Optical alignment tool for quick and easy alignment of the sample and the measuring head, integrated in instrument base (not required in combination with OptiCentric®)
- 0.5’’ Certified Reference Sample for OptiSurf® traceable to international standards
