A method of displaying a Computer Generated Holographic (CGH) image by a display, including setting pixel values of a Spatial Light Modulator (SLM) included in a Head Mounted Display (HMD), producing a interference based holographic image at a first location by projecting coherent light onto the SLM, and re-imaging the holographic image from the first location to form a holographic image in front of an eye of a viewer wearing the HMD. Related apparatus and methods are also described.

Various implementations directed to price time priority queue for a multi-dimension map tile device repository are provided. In one implementation, a method may include receiving origin location data and destination location data. The method may also include generating data networks based on the optimized origin location data and the destination location data. The method may further include determining data hubs along the transmission or transit route and network, where the virtual hubs include a first virtual hub based on the origin location data and a second virtual hub based on the destination location data. The method may additionally include receiving IoT device data for the geolocation exchange units. In addition, the method may include receiving market depth data for a geolocation exchange for the geolocation exchange units based on the multi-dimension map tile repository nodal sequences.

A system for displaying enhanced reality images of a body includes a fiducial marker patch, an external medical imaging system, a camera, a tool, a controller, and a display. The fiducial marker is configured to be placed on the body. The tool is configured to be inserted into the body for a medical procedure. The controller is configured to develop 2D or 3D images of the tool positioned within the body in real time based upon images from the external medical imaging system and the camera. The display is configured to display the 2D or 3D images in real time.

A head-up display for a vehicle. The head-up display comprises a projector and processor. The projector is arranged to project image content such that it is visible from an eye-box. The processor is arranged to receive captured images of a scene visible from the eye-box. The processor is arranged, at a first time to: detect a first object in a scene and instruct the image projector to project an icon (e.g. computer graphic) that appears, from the viewing position, to be coincident with the first object. The processor is further arranged to, at a second time later than the first time to: detect a second object in a line of sight from the eye-box position to the first object and instruct the image projector to change the visual appearance of the projected icon in response to the detection of the second object.

Augmented reality glasses are used, with a transducer array, to give images, produced by the glasses, a feel in midair. The glasses images can be shown as three-dimensional images, that are located in midair. The images are located near the transducer array. The array produces a touch feel in mid-air. The mid-air touch feel occupies the same space as the image. The feel gives the image a touch feel, when a user touches the image. The touch sense, can give the image a more real interaction when touched, such as, giving an image of a food item like a sandwich, a feel similar to a sandwich feel. The images with feel, allow for an immersive experience, within the augmented reality environment. The feel can move, when the image moves, such as, the user views an image, of another user's hand moving, and feels the movement of the hand.

A holographic display apparatus and a holographic display method are provided. The holographic display apparatus determines a representative depth from 3D image data; calculates a computer generated hologram (CGH) corresponding to the representative depth on the 3D image data; obtains the modulated CGH by modulating a phase of the CGH to increase an eye box; modulates a light according to the modulated CGH and generates a hologram image; and forms the generated hologram image at the representative depth.

A method and system for reducing the effects of glare in a system comprising a picture generating unit, such as a holographic projector. The system may be a head-up display (HUD), which is configured to display a picture to a viewer, without requiring the user to look away from their usual viewpoint. The HUD system may be comprised within a vehicle. The glare in the system may be caused by light being incident on a surface comprising a screen or a window, through which the user looks at their usual viewpoint. The surface may comprise a windshield in a vehicle. The light that causes the glare may be ambient light. The method and system are provided for reducing the effects of glare in a system that comprises a waveguide in conjunction with the picture generating unit. The waveguide may be operable to act as an exit pupil expander.

A holographic projection operating device, holographic projection device and holographic optical module thereof are illustrated. The holographic optical module has a first and a second prism array. The first prism array has a plurality of first prisms with first faces in contact with each other to form a first optical interface. The second prism array has a plurality of second prisms with second faces in contact with each other to form a second optical interface. Light is incident on the first optical interface at a first incident angle to undergo total internal reflection and generate a first reflected ray or at a second incident angle to undergo total internal reflection and generate a second reflected ray. The first or second reflected ray enters the second prism array and hits the second optical interface at a third incident angle to undergo total internal reflection and generate a third reflected ray.

An apparatus for manufacturing a hologram includes a holographic optical element on which a first interference pattern of a first signal beam and a first reference beam is recorded and a second interference pattern of a second signal beam modulated by a Fourier lens and a second reference beam is recorded. Also, an apparatus for reconstructing a hologram by using the holographic optical element is provided.

Various implementations directed to price time priority queue for virtual power plant and connected grid aggregation are provided. In one implementation, a method may include receiving origin location data and destination location data. The method may also include generating nodal power networks based on the optimized origin location data and the destination location data. The method may further include determining virtual power plant hubs along the transmission route and network, where the virtual hubs include a first virtual hub based on the origin location data and a second virtual hub based on the destination location data. The method may additionally include receiving power device data for the geolocation exchange units. In addition, the method may include receiving market depth data for a geolocation exchange for the geolocation exchange units based on the virtual power plant nodal sequences.