Abstract: An apparatus for displaying an image, comprising including: an input image node configured to provide at least a first and a second image modulated lights; and a holographic waveguide device configured to propagate the at least one of the first and second image modulated lights in at least a first direction. The holographic waveguide device comprises includes: at least a first and second interspersed multiplicities of grating elements disposed in at least one layer, the first and second grating elements having respectively a first and a second prescriptions. The first and second multiplicity of grating elements are configured to deflect respectively the first and second image modulated lights out of the at least one layer into respectively a first and a second multiplicities of output rays forming respectively a first and second FOV tiles.

Abstract: A display system includes a light pipe including elongated surfaces. The light pipe is configured to expand the image in a first direction through one of the elongated surfaces. The display also includes a waveguide including an output grating, a first surface, a second surface, and a side surface. The first surface and the second surface have a larger area than the side surface, the output grating being configured to provide the image expanded in a second direction. The second direction is different than the first direction. The image enters the waveguide from the one of the elongated surfaces.

Abstract: An apparatus for displaying an image, including: an input image node configured to provide at least a first and a second image modulated lights; and a holographic waveguide device configured to propagate the at least one of the first and second image modulated lights in at least a first direction. The holographic waveguide device includes: at least a first and second interspersed multiplicities of grating elements disposed in at least one layer, the first and second grating elements having respectively a first and a second prescriptions. The first and second multiplicity of grating elements are configured to deflect respectively the first and second image modulated lights out of the at least one layer into respectively a first and a second multiplicities of output rays forming respectively a first and second FOV tiles.

Abstract: A display system includes a light pipe including elongated surfaces. The light pipe is configured to expand the image in a first direction through one of the elongated surfaces. The display also includes a waveguide including an output grating, a first surface, a second surface, and a side surface. The first surface and the second surface have a larger area than the side surface, the output grating being configured to provide the image expanded in a second direction. The second direction is different than the first direction. The image enters the waveguide from the one of the elongated surfaces.

Abstract: An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.

Abstract: An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.

Abstract: An apparatus for providing an optical display includes an optical substrate for propagating light received from a light source, a first set of one or more switchable diffractive elements in the substrate, and a second set of one or more switchable diffractive elements in the substrate. Each diffractive element in the second set corresponds to a diffractive element in the first set. Each of the diffractive elements in the first and second sets is configured to switch between on and off states. One of the states is for diffracting light and the other state for allowing light to pass through. Each of the first set of diffractive elements is configured to diffract the light at an angle for propagation in the substrate. Each of the second set of diffractive elements is configured to diffract the light for display.

Abstract: An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.

Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

Abstract: An optical waveguide display comprises: a waveguide; a source of light modulated with temporally-varying angularly-distributed information; a fold grating providing a first beam expansion; an input coupler for directing light into total internal reflection paths in a first propagation direction; and an output grating for providing a second beam expansion and extracting light from the waveguide. The input light undergoes at least two diffractions within the fold grating, each diffraction directing light into a unique total internal reflection angular range along a second propagation direction.

Abstract: A display system includes a light pipe including elongated surfaces and an input coupler. The light pipe is configured to provide an image received by the input coupler and expand the image in a first direction through one of the elongated surfaces. The display also includes a waveguide including an output grating, a first surface, a second surface, and a side surface. The first surface and the second surface have a larger area than the side surface, the output grating being configured to provide the image expanded in a second direction. The second direction is different than the first direction. The image enters the waveguide from the one of the elongated surfaces at the side surface.

Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

Abstract: An optical waveguide display comprises: a waveguide; a source of light modulated with temporally-varying angularly-distributed information; a fold grating providing a first beam expansion; an input coupler for directing light into total internal reflection paths in a first propagation direction: and an output grating for providing a second beam expansion and extracting light from the waveguide. The input light undergoes at least two diffractions within the fold grating, each diffraction directing light into a unique total internal reflection angular range along a second propagation direction.

Abstract: An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.

Abstract: A head mounted or helmet mounted display (HMD), head up display (HUD, or collimated virtual window can be used in various applications including but not limited to avionic applications. The HMD, HUD, or collimated virtual window can include a cylindrical, elliptical, or curved substrate waveguide combiner. The cylindrical or curved substrate waveguide combiner can be used with a projector which provides pre-aberrated light. The cylindrical substrate waveguide combiner provides collimated light to a user with reduced wavefront errors.

Abstract: A head up display can be used in an automotive application and provides information for viewing above a glareshield or dashboard. The head up display includes a waveguide combiner and a compact projector. The waveguide combiner is at least partially disposed above the glareshield or dashboard and can provide dual axis pupil expansion. The waveguide combiner can present conformal or near conformal information and vehicle instrumentation information.

Abstract: An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.

Abstract: An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.

Abstract: A pulsed emitter of electromagnetic radiation having a frequency range of 0.1 to 10 THz is described. The pulsed emitter includes an electromagnetic radiation gain medium and a pulse inducing element. The electromagnetic radiation gain medium is for generating electromagnetic radiation having the frequency range of 0.1 to 10 THz. The pulse inducing element is configured to induce an electromagnetic radiation pulse in the gain medium.

Abstract: Provided in one embodiment is an apparatus, comprising: an optical substrate configured to manipulate light received from a light source; and at least one diffractive element in one layer in the optical substrate, each diffractive element comprising: a plurality of sub-substrate structures separated from one another by a plurality of valleys, the sub-substrate structures comprising a material having a first refractive index; and a filler material filling at least partially at least some of the plurality of valleys, the filler material having a second refractive index that is unequal to the first refractive index.