PROJECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a projection type liquid crystal display device which is bright and with which a high contrast is obtainable. SOLUTION: The max. visual angle directionθmax of a liquid crystal display device element 20 and the optical axis 16 of an optical system are aligned in order to adjust the contrast CRPROJ of the exit light from a projecting lens to an arbitrary target contrast CRTARGET.. The relation between the max. visual angleθLC-max of the liquid crystal display element 20 to embody the target contrast CRTARGET and the angleθLENS at which the projecting lens 14 takes in the video light transmitted through the liquid crystal display element 20 is specified that theθLENS exists within a range ofθLC-max±1 deg..