Projection display system including a relay lens that prevents light reflected at a surface thereof from being transmitted in a projection direction of the projection display system
A projection display system includes a reflection display device, an optical member for projecting an illumination beam toward the reflection display device from a direction inclined relative to a front surface direction of the reflection display device, an optical member for projecting an image beam projected from the reflection display device a onto a projection surface, and a relay lens disposed on a front surface side of the reflection display device. The relay lens corrects the illumination beam into a parallel beam that enters the reflection display device, and causes the image beam from the reflection display device to enter the optical member for projecting the image beam, and causes a part of the illumination beam that is surface reflected on a surface thereof facing the optical member to be reflected in a direction other than the direction in which the image beam is projected by the projection system optical member.
