Lumus Ltd.

Oorym Optics Ltd.

Yeda Research and Develpment & Co. Ltd

Other

Leland Stanford Junior University

Beamus, Ltd.

The Weizmann Institute of Science

Elop Electro-optics Industries Ltd.

Lumas Ltd.

The Weizman Institute of Science

Yeda Research & Devel Co., Ltd.

Yaakov Amitai

Nadav Amitai

Menachem Amitai

Mali Mansharof

Naamah Levin

Asher Albert Friesem

Mori Amitai

Silviu Reinhorn

Jonathan Gelberg

Yuval Ofir

Elad Mor

Joseph W Goodman

Isaac Shariv

Abraham Aharoni

Mali Hadad

Zvi Lapidot

Edgar Friedmann

Shmuel Friedman

Shachar Gorodeisky

Naamah Friedmann

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

An optical device, having at least first and second light-transmitting substrates, each having at least two external surfaces and an input aperture and an output aperture. The external surface of the first light-transmitting substrate is optically cemented to an external surface of the second light-transmitting substrate by an optical adhesive defining an interface plane. The refractive index of the optical adhesive is substantially lower than the refractive index of the first substrate. Part of the light waves entering the device through the input aperture and exiting the device through the output aperture impinge on the interface plane of the first substrate having incidence angles smaller than the critical angle. Another part of the light waves impinging on the interface plane have incidence angles higher than the critical angle. The interface plane is substantially transparent for the light waves impinging on interface plane having incidence angles smaller than the critical angle.

Compact head-mounted display system

A method for manufacturing an optical device having a light wave transmitting substrate with at least two major surfaces, edges and an output coupling-out reflecting element carried by the substrate forming a substrate allowing light-waves to traverse the substrate between the two major surfaces, includes (a) attaching to each other a plurality of flat plates of a selected thickness, each having at least two parallel main surfaces and two edges arranged in an unlimited first periodic stack () having at least two surfaces (U,D) parallel to the main surfaces of the plates and edges (R,L); (b) slicing the stack to form a plurality of slices () defining slicing lines (), wherein the stack is oriented such that for the majority of the stacked plates, the slicing lines cross at least two edges of the plate; (c) grinding or polishing the slice to form a substrate with two major surfaces, and a coupling-out reflecting element, wherein the major surfaces are parallel to each other and not parallel to the coupling-out reflecting element, and (d) cutting the substrate to final dimensions.

Method for manufacturing substrate-guided elements for compact head-mounted display system

Head-mounted display with an eye-tracking system and including a light-transmitting substrate () having two major surfaces and edges, optical means for coupling light into said substrate () by total internal reflection, partially-reflecting surfaces (-) carried by the substrate () that are not parallel with the major surfaces of the substrate (), a near-infrared light source () and a display source () projecting within the photopic spectrum, wherein light from the light source () and light from the display source () are coupled into the substrate () by total internal reflection.

Head-mounted display eyeball tracker integrated system

There is disclosed an optical device, including a light-transmitting substrate having an input aperture, an output aperture, at least two major surfaces and edges, an optical element for coupling light waves into the substrate by total internal reflection, at least one partially reflecting surface located between the two major surfaces of the light-transmitting substrate for partially reflecting light waves out of the substrate, a first transparent plate, having at least two major surfaces, one of the major surfaces of the transparent plate being optically attached to a major surface of the light-transmitting substrate defining an interface plane, and a beam-splitting coating applied at the interface plane between the substrate and the transparent plate, wherein light waves coupled inside the light-transmitting substrate are partially reflected from the interface plane and partially pass the through.

Compact head-mounted display system having uniform image

There is provided an optical device, including a light-transmitting substrate having a refractive index, at least two major surfaces and edges, an optical element for coupling light waves into the substrate for effecting total internal reflection, at least one element carried by the first substrate for coupling light waves out of the substrate, and a first transparent plate, having at least two major surfaces, one of the major surfaces of the first transparent plate being optically cemented, with a first optical adhesive having a refractive index, to one of the major surfaces of the light-transmitting substrate, defining a first interface surface, light waves coupled inside the substrate are partially reflected from the interface plane and partially pass through it, wherein the refractive index of the optical adhesive is different than the refractive index of the light transmitting substrate.

Compact display system having uniform image

An optical device includes a light-transmitting substrate, input and output apertures, eye-motion box, intermediate element outside of the substrate for coupling light waves into the substrate through the input aperture, a first reflecting surface between two major surfaces of the light-transmitting substrate for reflecting the coupled-in light waves to effect total internal reflection from the major surfaces of the substrate, a second flat reflecting surface parallel to the first reflecting surface located between the major surfaces of the light-transmitting substrate, for coupling light waves out of the substrate, and an optical element for redirecting light waves coupled-out from the substrate through the output aperture, into the eye-motion-box. The input aperture is substantially smaller than the output aperture, active areas of the first and second reflecting surfaces are similar, and each of the coupled light waves covers the entire aperture of the eye-motion-box.

Highly efficient compact head-mounted display system having small input aperture

There is provided an optical system, including a light-transmitting substrate () having at least two major surfaces () and edges, all optical prism () having at least a first (), a second () and a third () surface, for coupling light waves having a given field-of-view into the substrate by total internal reflection, at least one partially reflecting surface located in the substrate, the partially reflecting surface being orientated non-parallelly with respect to the major surfaces of the substrate, for coupling light waves out of the substrate, at least one of the edges () of the substrate is slanted at an oblique angle with respect to the major surfaces, the second surface of the prism is located adjacent to the slanted edge of the substrate, and a part of the substrate located next to the slanted edge is substantially transparent, wherein the light waves enter the prism through the first surface of the prism, traverse the prism without any reflection and enter the substrate through the slanted edge.

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.

Growing community of inventors

Rehovot, Israel

Yaakov Amitai