objective lense for cameras, projectors or photographic enlargers or reducers
One way I do this is through the camera lense.
The lense of the camera should be screened from direct sunlight.
These regions may be shale lense or artificially introduced in an EOR like process, such as polymer flooding.
The lunar Orbiter laser Altimeter (LOLA) works by sending a laser pulse through an optical lense that splits it into five beams that are each scattered back after they strike the lunar surface.
