COMBINER FOR HEADUP DISPLAY DEVICE AND HEADUP DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a combiner capable of making display easy-to-view in accordance with working environment. ;SOLUTION: Since this combiner 2 is provided with a photochromic glass plate 9, transmissivity is changed in accordance with external light. Light 5 including information from a light emitting means is diffracted by a hologram 7 enclosed between a transparent glass plate 6 and the plate 9, so that a display picture 4 is visually recognized by a viewer 1.;COPYRIGHT: (C)1999,JPO