Cliff Sensor Total Reflection Lens Design to Reduce False Detection

The patent applies local quality by creating a non-uniform light distribution through the convex lens, where the center region blocks direct light transmission to prevent false positives, while the peripheral region with inclined surfaces allows reflected light from cliffs to reach the sensor. This local differentiation of light transmission properties resolves the contradiction between preventing direct light interference and maintaining sufficient signal intensity.

The patent converts the harmful effect of light intensity reduction caused by the partition into a beneficial feature by using the inclined surfaces on the lens periphery to selectively capture and redirect reflected light from cliffs. The partition's light-blocking function, which initially reduces overall light intensity, is compensated by the inclined surfaces that concentrate and redirect useful reflected light onto the sensor, transforming the harmful intensity reduction into a beneficial signal enhancement mechanism.

The patent applies segmentation by dividing the convex lens into functionally distinct regions: a central partition region that blocks direct light transmission, and peripheral inclined surfaces that redirect reflected light. This segmentation allows each region to perform its specific function optimally, improving sensing accuracy while keeping the overall structure integrated within a single lens component, thus managing complexity through functional division rather than multiple separate parts.

The patent merges multiple functions into a single convex lens structure. The lens simultaneously performs light focusing, light blocking (through the integrated partition), and light redirection (through the inclined surfaces). By combining these functions that would traditionally require separate components into one integrated lens, the patent improves sensing accuracy while avoiding the increased complexity that would result from multiple discrete optical elements.