Abstract: In a see-through waveguide-based HMD device configured to display holographic virtual images within a field of view (FOV) of a device user, a glint-based eye tracker illumination system provides infrared (IR) point sources at known locations having a predetermined angular distribution using optical components—including input and output couplers and diffusers—on a waveguide that is located in front of the user's eyes. An input coupler couples light from an IR source into the illumination system waveguide which is propagated to one or more output couplers. Separate diffuser elements aligned with the output couplers distribute the out-coupled IR light into a deterministic range of divergent angles to function as point sources for eye tracker glints. Various illustrative illumination system waveguide architectures are disclosed in which the optical components can be disposed on the same or opposite sides of the waveguide in dual-layered and dual-sided arrangements.

Abstract: A scanning mirror device comprises a mirror disposed on a mirror support. The scanning mirror device also includes a first pair of actuators comprising a first actuator and a second actuator. The first actuator is positioned on a first side of the mirror support. The second actuator is positioned on a second side of the mirror support opposite the first side of the mirror support. The first actuator and the second actuator are connected to the mirror support along a first axis of rotation. The scanning mirror device also includes a second pair of actuators comprising a third actuator and a fourth actuator. The third actuator is positioned on the first side of the mirror support. The fourth actuator is positioned on the second side of the mirror support. The third actuator and the fourth actuator are connected to the mirror support along a second axis of rotation.

Abstract: A projector system in a head mounted display (HMD). The projector system includes a microscopic mirror. A microelectromechanical system (MEMS) is coupled to the microscopic mirror. The MEMS is configured to tilt the microscopic mirror at a varying scan angle in a first periodic fashion along a single scanning axis. A rotary platform is coupled to the microscopic mirror. The rotary platform is configured to rotate the microscopic mirror about a rotation axis in a second periodic fashion. A light emitter is configured to direct light into the mirror. The light emitter is configured to be modulated based on the position of the microscopic mirror due to the microscopic mirror being tilted along the scanning axis and rotated about the rotary axis.

Abstract: A projector system in a head mounted display (HMD). The projector system includes a microscopic mirror. A microelectromechanical system (MEMS) is coupled to the microscopic mirror. The MEMS is configured to tilt the microscopic mirror at a varying scan angle in a first periodic fashion along a single scanning axis. A rotary platform is coupled to the microscopic mirror. The rotary platform is configured to rotate the microscopic mirror about a rotation axis in a second periodic fashion. A light emitter is configured to direct light into the mirror. The light emitter is configured to be modulated based on the position of the microscopic mirror due to the microscopic mirror being tilted along the scanning axis and rotated about the rotary axis.

Abstract: In a see-through waveguide-based HMD device configured to display holographic virtual images within a field of view (FOV) of a device user, a glint-based eye tracker illumination system provides infrared (IR) point sources at known locations having a predetermined angular distribution using optical components—including input and output couplers and diffusers—on a waveguide that is located in front of the user's eyes. An input coupler couples light from an IR source into the illumination system waveguide which is propagated to one or more output couplers. Separate diffuser elements aligned with the output couplers distribute the out-coupled IR light into a deterministic range of divergent angles to function as point sources for eye tracker glints. Various illustrative illumination system waveguide architectures are disclosed in which the optical components can be disposed on the same or opposite sides of the waveguide in dual-layered and dual-sided arrangements.

Abstract: A laser chip is described which comprises a plurality of gain areas. Each gain area comprises a ridge waveguide and a wavelength locking element, where the wavelength locking element in a gain area defines the output wavelength characteristics of visible light emitted from that gain area and adjacent gain areas comprise different wavelength locking elements.

Abstract: In a see-through waveguide-based HMD device configured to display holographic virtual images within a field of view (FOV) of a device user, a glint-based eye tracker illumination system provides infrared (IR) point sources at known locations having a predetermined angular distribution using optical components—including input and output couplers and diffusers—on a waveguide that is located in front of the user's eyes. An input coupler couples light from an IR source into the illumination system waveguide which is propagated to one or more output couplers. Separate diffuser elements aligned with the output couplers distribute the out-coupled IR light into a deterministic range of divergent angles to function as point sources for eye tracker glints. Various illustrative illumination system waveguide architectures are disclosed in which the optical components can be disposed on the same or opposite sides of the waveguide in dual-layered and dual-sided arrangements.

Abstract: A projector system in a head mounted display (HMD). The projector system includes a microscopic mirror. A microelectromechanical system (MEMS) is coupled to the microscopic mirror. The MEMS is configured to tilt the microscopic mirror at a varying scan angle in a first periodic fashion along a single scanning axis. A rotary platform is coupled to the microscopic mirror. The rotary platform is configured to rotate the microscopic mirror about a rotation axis in a second periodic fashion. A light emitter is configured to direct light into the mirror. The light emitter is configured to be modulated based on the position of the microscopic mirror due to the microscopic mirror being tilted along the scanning axis and rotated about the rotary axis.

Abstract: A near eye display system includes a waveguide display that presents to the eyes of a viewer mixed-reality or virtual-reality images. The waveguide display includes two or more waveguide plates that are stacked over one another with an air gap between them. The waveguide plates are tilted so that they are not parallel to one another. In this way the spacing or air gap between the waveguide plates varies across the area of the plates.