Oorym Optics Ltd.

Menachem Amitai

Yaakov Amitai

Mori Amitai

There is provided an optical system, including a light source, a control unit, and at least one juxtaposed double grating element, including a first grating and a second grating having grating functions, the gratings being spaced apart at a constant distance from each other, each of the two gratings having a center and at least one edge and comprising at least one sequence of a plurality of lines, wherein the spacing between the lines gradually changes from the center of the grating to the edges, the sequence of the plurality of lines of at least one of the gratings has a radial symmetry, and wherein the first grating diffracts a light wave from the light source towards the second grating and is further diffracted by the second grating as an output light wave in a given direction.

Dynamic full three dimensional display

There is provided an optical device, including a light-transmitting substrate having at least two parallel major surfaces, edges and an output aperture, an optical element for coupling light waves into the substrate to effect total internal reflection, a plurality of redirecting elements positioned outside of the substrate comprising at least two spaced-apart redirecting elements having a selectable laterally displaceable reflection-transmission ratio, and at least one reflecting surface having at least one active side located between the two major surfaces of the light-transmitting substrate for coupling light waves out of the substrate, wherein light waves trapped inside the substrate are coupled out from the substrate through the output aperture substantially inclined in relation to the normal to the substrate major surfaces, and are reflected from the redirecting elements into a viewer's eye, and wherein at least one of the redirecting elements is lateral displaceable in relation to another redirecting element.

Highly efficient compact head-mounted display system

There is provided an optical device, including a light-transmitting substrate, having at least two parallel major surfaces, edges and an output aperture, an optical element for coupling light waves into the substrate to effect total internal reflection, at least one redirecting element positioned outside of the substrate, and at least one reflecting surface having at least one active side located between the two major surfaces of the light-transmitting substrate for coupling light waves out of the substrate, wherein light waves trapped inside the substrate are coupled out from the substrate through the output aperture substantially inclined in relation to the normal to the substrate major surfaces and are reflected from the redirecting element into a viewer's eye, and wherein the redirecting element is a single flat reflecting surface parallel to the major surfaces of the substrate.

There is provided an optical device, including a light-transmitting substrate having at least two major surfaces and edges, a display source based on a time-sequential color imaging, characterized by a frame time, three different primary colors, and coupled-in brightness, an optical element for coupling light waves from the display source into the substrate to effect total internal reflection, at least one flat reflecting surface located between the two major surfaces of the light-transmitting substrate for coupling light waves out of the substrate, and a dynamic partially reflecting element for re-directing the coupled-out light waves into a viewer's eye, wherein the transmittance and the reflectance of the dynamic partially reflecting element is dynamically controllable to yield high reflection in each one of the three primary colors, while simultaneously having high transmittance of two other colors of the three primary colors.

There is provided a frame time-based optical display system, having a control unit, a two-dimensional array of more than two pixels, each of the pixels being an element having a front surface, emitting an output light wave, each of the pixels includes means for controlling the amplitude and direction of the output light wave for each time of the display, wherein for each of the pixels the direction of the output light wave is separately, dynamically and externally controlled by the control unit.

There is provided an optical display system, including a light source, a control unit, and an array of at least two pixels, each of the pixels being a juxtaposed double grating element, comprising a first grating and a second grating spaced apart at a constant distance from each other, each of the two gratings having at least two edges, at least one sequence of a plurality of lines and apertures, the spacing between the lines gradually changing over the aperture of the gratings, the first grating diffracting a light wave from the light source towards the second grating, the light wave further diffracted by the second grating as an output light wave in a given direction, wherein for each of the pixels the direction of the output light wave from the second grating is separately, dynamically and externally controlled by the control unit.

An optical device includes input and output apertures (), a light-transmitting substrate (), a coupling-in element () positioned outside of the substrate for coupling light waves having a field-of view into the substrate, a first flat reflecting surface () located between two major surfaces () of the light-transmitting substrate for total internal reflection of the coupled-in light waves from the major surfaces, and a second flat reflecting surface () located between the two major substrate surfaces for coupling light waves out of the substrate for redirecting into a viewer's eye by an optical element (). The substrate and coupling-in element () are formed of substantially different optical materials and the ratio between the fields of view of the light waves coupled-out from the substrate into the viewers' eye and of the light waves coupled inside the substrate, is substantially bigger than the refractive index of the substrate.

There is provided an optical display system, including a light source, a control unit, and an array of at least two juxtaposed double grating elements, each of the elements comprising a first grating and a second grating, spaced apart at a constant distance from each other, each of the two gratings having at least two edges and comprises at least one sequence of a plurality of lines, wherein the spacing between the lines gradually changes from one edge of the grating to the other edge, and wherein the first grating diffracts a light wave from the light source towards the second grating and is further diffracted by the second grating as an output light wave in a given direction.

Growing community of inventors

Rehovot, Israel

Menachem Amitai