I replaced my 2012 IS350c's lamp with a new, OEM lamp from Lexus. The new one doesn't have any fluting above the low-beam projector. The old one does. What's the purpose of the fluting? To shape the uplight? Am I losing any benefit from not having the fluting? Is the function of the fluting to reduce uplight as to reduce glare from overlit retroreflective signs?
https://imgur.com/a/rSkm9rC
https://imgur.com/a/rSkm9rC