DISPLAY APPARATUS

摘要

A display apparatus includes a spatial phase modulator that forms a display light beam, a transparent substrate in which the display light beam propagates by repeated internal reflection, a bifurcation that emits a portion of the display light beam outside the transparent substrate each time the display light beam undergoes the internal reflection, and a light beam introduction optical system including a beam splitter that guides an illumination light beam to the spatial phase modulator and guides the display light beam formed by the spatial phase modulator to the transparent substrate. The spatial phase modulator forms the display light beam holographically by diffraction of the illumination light beam.

主权项

1. A display apparatus comprising:
a spatial phase modulator configured to form a display light beam; a transparent substrate, the display light beam propagating in the transparent substrate by repeated internal reflection; a bifurcation configured to emit a portion of the display light beam outside the transparent substrate each time the display light beam undergoes the internal reflection; and a light beam introduction optical system including a beam splitter configured to guide an illumination light beam to the spatial phase modulator and to guide the display light beam formed by the spatial phase modulator to the transparent substrate; wherein the spatial phase modulator forms the display light beam holographically by diffraction of the illumination light beam; and the light beam introduction optical system further includes an optical element with a negative lens power in an optical path of the display light beam between the spatial phase modulator and the transparent substrate.