Abstract: Embodiments of the present invention provide methods and systems of temporally smoothing the distortion of a light beam caused by imperfections of an optical element or optical system through which the light beam passes. The optical element is moved relative to the light beam to change a position of the imperfections in the path of the light beam to distribute the distortion of the light beam caused by the imperfection without substantially changing the path of the light beam. In some embodiments, the optical element is axially symmetric with respect to its optical axis, and the distortion of the light beam is distributed by rotating the optical element around its optical axis. In some embodiments, the optical element has geometric uniformity relative to a plane or along a line in a plane, and the distortion of the light beam is distributed by moving the optical element along the plane, or along the line of symmetry in the plane.

Abstract: The tool includes an elongated handle having a first end and second end, wherein a handle grip is rotatably coupled with the first end, and a working end is coupled with the second end. The working end may include a plurality of spaced tines with the prongs having points, wherein at least one cutting blade is coupled to the device between adjacent tines allowing a user to slide the tines of the fork along the ground surface, thereby using the blade to harvest vegetation. Additionally, the working end allows a stack of cut vegetation to accumulate on the device to be carried and placed in a preferred location or container.

Abstract: A rounded cornerbead sanding tool including a female pole adapter for attachment to common extension poles. Two (2) separated pivot joints allowing greater angle accessibility including inverted angles. Three (3) interchangeable sanding sponge forming arms to form sanding sponge to recessed or protruding "U" shape for sanding "Outside" or "Inside" cornerbeads, angles and flat surfaces. Slot formed through center of larger than now commonly available sanding sponge for attachment to tool head.