I want to know more about "aimed optics". Cars have both low beam and high beam. Are we saying the high beam is aimed like the low beam? Or are we saying the high beam is not aimed the same and even aimed higher like the bicycle lights nowadays?

I suspect the car high beam is meant to aim higher for the roads that do not have street lighting. That would be like a bicycle riding in the dark where the street lights are not particularly there for you. On a bicycle, it may not be practical to have both a high beam and low beam setting like a car. That would require two types of "aimed optics".