This isn't quite what you're looking for, but this has some of what you're looking for, which is how to get the "parallel light effect" that the sun has, so it

This isn't quite what you're looking for, but this has some of what you're looking for, which is how to get the "parallel light effect" that the sun has, so it doesn't look like a bulb, and diffuses properly: https://youtu.be/6bqBsHSwPgw https://youtu.be/6bqBsHSwPgw Hope this helps a little.