2024 rules reference for Lantern of Revealing.
Wondrous Item
While lit, this hooded lantern burns for 6 hours on 1 pint of oil, shedding Bright Light in a 30-foot radius and Dim Light for an additional 30 feet. Invisible creatures and objects are visible as long as they are in the lantern's Bright Light. You can take a Utilize action to lower the hood, reducing the lantern's light to Dim Light in a 5-foot radius.