look at, inspect, perceive
覽 centers on careful observation: looking at something thoroughly, inspecting it, or perceiving it with attention.
覽 combines 見 (see) with an upper component that historically relates to 監 (oversee), suggesting looking over or inspecting. The exact development of the upper part is complex, but the overall idea of watchful observation is clear.
The bottom 見 means see, and the upper part looks like an official with a wide eye (臣) under a roof (罒), inspecting everything below. Together, 覽 is a thorough look.
For ラン, imagine a museum guard named Ran who carefully inspects every exhibit: Ran -> ラン, and his job is to look at everything.