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Aberration measurement from confocal axial intensity response using neural network
Optics Express
|May 23, 2009
Summary
We developed a fast, parallel system using confocal optics to measure lens aberrations. This method accurately determines spherical aberration coefficients for 10,000 microlenses in under 30 seconds.
Area of Science:
- Optical Engineering
- Metrology
- Computational Imaging
Background:
- Lens aberrations impact optical system performance.
- Accurate aberration measurement is crucial for high-quality optics.
- Existing methods can be time-consuming and complex.
Purpose of the Study:
- To introduce a high-speed, parallel system for lens aberration measurement.
- To utilize a confocal optical setup for non-interferometric aberration determination.
- To apply neural networks for efficient aberration coefficient calculation.
Main Methods:
- A confocal optical setup was employed for axial response measurement.
- Spherical aberration coefficients were determined from intensity axial response data.
- A neural network was utilized for rapid calculation of aberration coefficients.
Main Results:
- The system successfully calculated aberration coefficients from intensity axial response.
- The proposed system can measure 10,000 microlenses in 20 seconds of measurement time.
- Calculation time was reduced to 1 second using neural network analysis.
Conclusions:
- The developed system offers a practical and efficient solution for lens aberration measurement.
- High-speed, parallel processing enables rapid characterization of multiple microlenses.
- Experimental results validate the system's feasibility and performance.
