Head mounted display with eye accommodation having 3-D image producing system consisting of, for each eye, one single planar display screen, one single planar tunable focus LC micro-lens array, one single planar black mask and bias lens
View Patent ↗Systems, methods, apparatus and devices for head mounted stereoscopic 3-D display devices using the tunable focus liquid crystal micro-lens array eye to produce eye accommodation information. A liquid crystal display panel displays stereoscopic images and uses tunable liquid crystal micro-lens array to change the diopter of the display pixels to provide eye accommodation information. The head mounted display device includes a planar display screen, planar tunable liquid crystal micro-lens array and planar black mask. The display device may optionally include a bias lens. In an embodiment, the display device also includes a backlight and a prism sheet for displaying the images on the display screen. The display screen, tunable liquid crystal micro-lens array, black mask and optional backlight and prism may be flat or curved.
1. A light weight head mounted visual stereoscopic display device with a large field of view having an image producing system for producing a 3-dimensional visual image seen by a viewer, the image producing system consisting essentially of:
for each of a right eye and a left eye of the viewer to provide a spatially distinct image independently to each of the right eye and the left eye,
one single planar display screen for displaying plural pixels of an image;
one single planar tunable focus liquid crystal micro-lens array having plural liquid crystal micro-lenses each aligned with one of the plural pixels of the one single planar display screen, wherein the plural liquid crystal micro-lenses alternates a diopter of the plural pixels;
one single planar black mask having plural apertures aligned with the plural liquid crystal micro-lenses located between the planar tunable focus liquid crystal micro-lens array and the planar display screen to prevent light from passing through the intervals between the plural liquid crystal micro-lenses of the tunable focus liquid crystal micro-lens array corresponding independently to one of the right and the left eye; and
a bias lens located between the tunable focus liquid crystal micro-lens array and the eye of the viewer to converge light from each of the plural pixels into a pupil of the eye so that all portions of the displayed image are visible even though the field of view is large and the viewer moves the eye.
2. A head mounted visual stereoscopic display device having an image producing system consisting essentially of:
one single planar reflective display screen for each of a left eye and a right eye for displaying plural pixels of an image;
one single planar tunable focus liquid crystal micro-lens array having plural liquid crystal micro-lenses each aligned with one of the plural pixels of the planar reflective display screen for each of the left eye and the right eye, wherein the plural liquid crystal micro-lenses alternates a diopter of the plural pixels;
one single planar black mask having plural apertures aligned with the plural liquid crystal micro-lenses independently for each of the left eye and the right eye and located between the planar tunable focus liquid crystal micro-lens array and the planar reflective display screen to prevent light from passing through the intervals between the plural liquid crystal micro-lenses of the tunable focus liquid crystal micro-lens array;
one single bias lens aligned with the one single black mask, the one single planar tunable liquid crystal micro-lens array and the one single planar reflective display screen located adjacent to the an eye of the viewer to converge light from each of the plural pixels into a pupil of the eye so that all portions of the displayed image are visible even though the field of view is large and the viewer moves the eye; and
an image projector for each of the left eye and the right eye for producing and projecting a different image on the planar reflective display screen for each of the left eye and the right eye, the image projector positioned between the planar reflective display screen and the tunable focus liquid crystal micro-lens array.
3. An image producing system for a head mounted visual display device image producing system consisting essentially of:
one single planar display screen for displaying plural pixels of an image for each of a right eye and a left eye;
one single planar tunable focus liquid crystal micro-lens array for each of the right eye and the left eye adjacent to the one single planar display screen and having plural liquid crystal micro-lenses each aligned with one of the plural pixels of the one single planar display screen, wherein the plural liquid crystal micro-lenses alternates a diopter of the plural pixels;
one single planar black mask having plural apertures for each of the right eye and the left eye located adjacent to an opposite side of the one single planar tunable focus liquid crystal micro-lens array and aligned with the plural liquid crystal micro-lenses to prevent light front passing through tile intervals between the plural liquid crystal micro-lenses of the tunable focus liquid crystal micro-lens array; and
one single bias micro-lens array having plural bias micro-lenses for each of the right eye and the left eye located between the one single planar black mask and a corresponding one of the right and the left eye of the viewer for converging the light from the display pixel passing though the tunable focus liquid crystal micro-lens array, producing a retinal image corresponding to the display pixel, the one single bias micro-lens array aligned with the one single black mask, the one single planar turnable liquid crystal micro-lens array and the one single planar reflective display screen.
4. A right and a left optical system for a head mounted visual display device to display a different image to each of a right eye and a left eye of a wearer, each one of the right and the left optical system consisting essentially of:
one single planar reflective display screen for displaying plural pixels of an image;
one single planar tunable focus liquid crystal micro-lens array adjacent to the one single planar reflective display screen and having plural liquid crystal micro-lenses each aligned with one of the plural pixels of the one single planar reflective display screen, wherein the plural liquid crystal micro-lenses alternates a diopter of the plural pixels;
one single planar black mask having plural apertures located adjacent to the opposite side of the one single planar tunable focus liquid crystal micro-lens array and aligned with the plural liquid crystal micro-lenses to prevent light from passing through the intervals between the plural liquid crystal micro-lenses of the tunable focus liquid crystal micro-lens array;
one single bias micro-lens array having plural bias micro-lenses located between the one single planar black mask and the corresponding eye of the viewer for converging the light from the display pixel passing through the tunable focus liquid crystal micro-lens array, producing a retinal image corresponding to the display pixel; and
one single image projector for producing and projecting the image displayed on the one single planar reflective display screen, wherein one single planar tunable focus liquid crystal micro-lens array and adjacent one single planar black mask are located between the one single planar reflective display screen and the one single bias micro-lens array, each of the right and the left optical system displaying a different image to each of the right eye and the left eye for a three dimensional stereoscopic display.