Feature sponsored by Test & measurement
axis and off-axis measurements with field angles up to 50° are currently available, with larger angles feasible. Due to the combination of mechanical and optical measurement variables, both the BFL (Back Focal Length) and the EFL (Effective Focal Length) can be measured. In production environments, the
measurement process can be implemented as a semi- or fully-automatic one. In the case of a semi-automatic system, the test specimen is inserted manually into the measuring system, while SHSInspect carries out the measurement process automatically. However, this manual loading and unloading can be performed using a robot.
MEASUREMENT MODULES In addition to complete turnkey measurement systems, optical measurement modules are available for inline testing or for integration into customers’ own setups. The SHSInspect RL module, for example, is a high accuracy, flexible module that can be integrated into customer setups, OEM systems or inline testing. The module can be used for :
Wavefront, Zernike, PSF and MTF Alignment and final testing Surface and radius of curvature
Optical elements such as plano optics, filters, spheric and aspheric lens elements, mirrors, etc.
Optics for lasers and microscopy: objective lenses with low and high NA, air and immersion, high end and mass production
Optics for consumer devices: R&D and quality control of lenses for mobile devices, camera lenses, etc.
Astronomy, space: telescopes, instruments, etc.
Optics in mass production: automated assembly and inspection, etc.
ADVANCED WAVEFRONT ANALYSIS SOFTWARE All SHSInspect systems and modules benefit from SHSWorks, a powerful and comprehensive wavefront analysis software package that can capture multiple properties of optics and optical systems in just a single measurement. The software allows complete Zernike polynomial analysis, PSF/MTF calculation, laser beam parameter calculation and refractive data. It’s also fast and easy to setup using predefined configurations and users benefit from a variety of features such as data logging, advanced reporting and Pass/Fail analysis.
Micro-Epsilon
www.micro-epsilon.co.uk Instrumentation Monthly October 2022 71
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