Recent content by gmoose2

Thank you very much for your thorough answer.

the camera is "looking" at the spot that is being illuminated by the laser on the surface (I've added a diagram). one time the surface is in FOCUS of the camera, and one time the surface is in DEFOCUS of the camera. In both cases I start "closing" (or reducing) the camera aperture. Now I am...

Thank you Sophiecentaur. I will try to elaborate. I have a laser beam, pointing at some surface. The surface is NOT at the focal plane of my camera. The image is defocused. I receive an image of speckles. If I reduce the camera aperture, my spot of speckles simply reduced in size (diameter)...

Hello, (I am new here, so hopefully this is the right location to ask my question. please let me know if there is more relevant forum) I am trying to understand 2 situations: A) I have an object, lens and a detector. The detector is at the focal plane of the lens. I am reducing the aperture...