Customized optical testing using Weibull principles to predict lifetime and reliability of optical elements.
Test procedure:
The optical element is assessed by measuring the power in transmission and reflection at predefined test sites. Each test site consists of reference and exposure spots, which are subjected to controlled conditions such as angle of incidence (AoI), polarization, and irradiation level.
During the test, the power in transmission and reflection is continuously monitored to detect changes indicating potential damage or degradation. If a significant change in the measured power is observed, testing is stopped for that site, and the corresponding exposure duration and conditions are recorded. For test sites that do not show any significant changes, the irradiation continues until a predetermined maximum exposure duration is reached.
The Weibull test is used in optics testing to analyze when and why components fail. It predicts the lifetime and reliability of optical elements, helping ensure performance and improve designs and maintenance strategies.
Important guidelines for sample handling: