Abstract: An arm-mounted cutting tool for hands-free, rapidly cutting line, string, or slender rope. The cutting tool employs a sliding guide worn on, and fitted snugly and firmly to, the user's forearm. The sliding guide is used to guide line, string, or slender rope into a sharp blade member that is interiorly located in a blade support opening so that no human body extremities, such as a finger, can reach the blade and be accidentally cut. The blade member according to one preferred embodiment consists of two opposing linear cutting edges which intersect at a mutually produced apex. The two opposing cutting edges of this so-called “V”-shape blade, and the sharp apex they produce together, make a very effective blade for cutting line, string, or slender rope in a single pass.

Abstract: A projection system that projects a text or subtitle box onto an image minimizes the contrast between the text box and the image. A transition region surrounding the text box minimizes visual disruption to the image onto which the text box is projected. The positions of optical elements of a text projector enable the text box to gradually fade out. The text projector has a lamp that defines an object plane and a light path modifier. The light path modifier is offset from the object plane, toward the lamp to blend the borders of the text box into the image projected by an image projector.