Method for multiple gauges in a scanning laser based display device

摘要: A display for measured quantities can include a gauge with set of indicia spaced around the to indicate quantities. window be formed in that extends along indicia. An elliptical reflector positioned such first focus is on same axis as center this perpendicular connecting foci. optical device mounted shaft and arranged redirect light beam from second foci onto generate virtual pointer window. Means provided turning rotate device. source project Rotation enable selectively aimed at