Hi, I am looking to illuminate a quadrant photo diode using a condenser/ lens combination in a optical trap setup. I see thorlabs has a kit that has a 100x objective as a trap and a 10x objective as a condenser. Does that mean that one doesnt need to collect all the laser light scattered from a 1.25 NA objective, because surely a 0.25 NA condenser cannot do that. I have always thought it is critical to image the whole laser onto the QPD but maybe it is not. Any inputs?