Virtual retinal display with lens array for expanding exit pupil

Details Virtual retinal display with lens array for expanding exit pupil Virtual retinal display with lens array for expanding exit pupil

1997-03-25

1999-10-19

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

G02B 2710

Patent

active

059698713

ABSTRACT:
A display device is achieved using a simplified optical system which generates an expanded exit pupil without compromising magnification or resolution. Modulated light from a source is converged toward a focal point by an optics subsystem. A scanning subsystem deflects the converging light, and thus the focal point, along a raster pattern to define an intermediate image plane. A lens array defines a surface which coincides with the image plane. The lens array includes a plurality of lenses and a polymer dispersed liquid crystal film. The film serves to spread incident light and thus form an expanded exit pupil.

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Tidwell et al., The Virtual Retinal Display--A Retinal Scanning Imaging System,: Virtual Reality World '95; Feb. 1995.

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