Abstract: A learning system based on the use of games such as crossword puzzles to increase skills in learning languages. Clue lists and word lists are used to generate game matrices. Word lists are words or phrases in one language; clues may be words in another language, signs for learning sign language, and pictorial scenes such as an airport, hotel, for example. Word lists are inserted in a computer and a game matrix is generated using stored game generation software. The game may be displayed on the computer screen where a clue list and a matrix are displayed for the use of one or more persons to play. Multiple copies may be printed on all types of printed media, single sheets, pamphlets, magazines, newspapers and books. Networked computers enable several players to compete at one time. Principal relationship between the clues and word lists is the basis for a progressive learning process where the material for each successive game is designed to become increasing comprehensive.

Abstract: An optical system for use in helmet mounted displays that consists of an image source, electronics that predistort the image emanating from the projector, a means for correcting for optical aberration that may be a lens or a fiber optic taper, and a reflective surface composed of a plurality of reflective surface elements with conic geometries. Light from the projector, corrected for optical aberrations, is directed into the first reflective surface element. Light from the first reflective surface element is reflected into a second reflective surface element and thereafter into the eye.