Abstract: A laser system which utilizes a reflective objective lens includes a closed loop servo and beam profiling system to provide improved uniformity of the laser beam impinging on the work piece. The laser beam is passed through an aperture to pattern the work piece. A beamsplitter separates the laser beam into workpiece and diagnostic beams. The workpiece and diagnostic beams are both passed through identical reflective objective lenses, to accurately measures performance of the work piece beam. Preferably, a third reflective objective lens collimates the diagnostic beam and directs it to a beam analyzer where the uniformity can be accurately assessed. The information determined by the beam analyzer is then used to position a pre-aperture converging optic (PACO) located between the laser source and the aperture. Adjustments in the x- and y-dimensions of the PACO lens change the angular uniformity at the aperture.

Abstract: A system for electronic imaging of a hemispheric field of view includes a camera for receiving optical images of the field of view and for producing output data corresponding to the optical images. The camera includes an optical assembly for producing images throughout a hemispheric field of view for optical conveyance to an imaging device or photographic film. The optical system assembly has lens components that selectively emphasize the peripheral content of the hemispheric field of view. An electronic imaging device within the camera or a film-to-digital date conversion system provides digitized output signals to input image memory or electronic storage devices. A transform processor selectively accesses and processes the digitized output signals from the input image memory according to user-defined criteria and stores the signals in output image memory. The signals in the output image memory can then be displayed according to the user-defined criteria.