A display system with a holographic optical device for displaying images in different planes

摘要

The general field of the invention is a display system with a display () and a collimating optical device, the collimating optical device includes two holographic optical elements (hoe1, hoe2), the holographic optical element can be operated by reflection, wherein the first holographic optical element is closest to the display. The second holographic optical element is closest to the observer. In the system of the invention, the screen displays the first object on the first wavelength and the second object on the second wavelength. Each holographic optical element includes two holographic processes (Th1, Th2, th3, th4)Each process can reflect one of two wavelengths and transmit the other. The first holographic element and the second holographic element are arranged so that the image of the first object () is formed at a first distance of the display, and the image of the second object () is formed at a second distance different from the first distance of the display.