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Well I don't need 180 degrees actually. I was just ballparking it to see if you guys knew if something was available. 130 degrees might work. I need it to project a line on a wall. The diode would need to be 3 inches away from the wall and the line would need to project at least 16 inches up the wall. It's easy to do from further than 3 inches with a laser I already have but I need the laser to be close to the wall. If anyone has a suggestion that would be great. Even if you could point me in a different place to look.180° would mean the emission is a perfectly perpendicular to the aperture which is nearly impossible. Even powell lenses won't get you that. However they are the best for giving you even line power distribution. But you have to expect a <180° fan angle.