LARP Converter Damage Detection via Spatial Light Ratio

The converter device is divided into multiple sections, each monitored by separate sensor elements. Instead of using a single yellow/blue ratio threshold that is sensitive to power and temperature changes, the system segments the converter into multiple regions and compares relative light intensity ratios between adjacent sections. This segmentation allows local damage detection while compensating for global variations in operating conditions.

The monitoring approach changes from using absolute light intensity ratios (yellow/blue ratio) to using relative intensity ratios between different spatial sections of the converter. This parameter transformation converts an absolute measurement susceptible to power and temperature drift into a relative measurement that is inherently compensated for these variations, as both sections experience similar environmental conditions.

The harmful blue laser light that needs to be absorbed in fault cases is extracted and redirected away from the optical path using a beam trap positioned at a specific angle. The beam trap is designed to intercept only the scattered blue light in fault conditions while allowing the useful converted light to pass through to the output, minimizing energy loss of the useful luminous flux.

A beam trap serves as an intermediary element positioned in the optical path between the converter and the output. This intermediary component selectively interacts with the blue laser light in fault cases, absorbing or redirecting it, while being transparent or reflective to the useful converted light, thus mediating between the harmful radiation and the useful output.