Laraza is correct that on the R3T the factory reflector and lense are a very poor design. I replaced mine with a Bosch unit and it made a big difference even with the factory bulb. The light was more focused, went where it was supposed to, got more light from same bulb. I replaced the original bulb with an Osram Rallye 70/65w and am very happy with light output and pattern.
With the faactory set up it was hard to aim the headlamp as there was just a fuzzy light spot on wall with new reflector /lens there is a clean cut off allowing for good aiming.
Only problem was the lens assembly was about 1/8" smaller in dia. than retaining ring and moved a little. Some weather stripping tape solved issue.