Disclosed is a wearable display device configured to facilitate provisioning of holographic content in cooperation with at least one computing device. The wearable display device may include at least one sensor configured to detect sensor data corresponding to one or more of a location and an orientation of the wearable display device. Further, the wearable display device may include a communication interface configured to transmit the sensor data to the at least one computing device. Further, the communication interface may be configured to receive holographic projection content from the at least one computing device. Further, the wearable display device may include a processor communicatively coupled to the communication interface. Further, the processor may be configured to process the holographic projection content. Further, the wearable display device may include a display device configured to generate a visual display of the holographic projection content.

A laser beam (L50) is reflected by a light beam scanning device (60) and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (45). At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam (L60) on the hologram recording medium (45) is changed with time. Diffracted light (L45) from the hologram recording medium (45) produces a reproduction image (35) of the linear scatter body on a light receiving surface (R) of the stage 210. When an object is placed on the light receiving surface (R), a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured.

A driver for a display device includes a plurality of pixels. The driver is arranged to drive the display device to display a hologram of a picture on the plurality of pixels such that, when the display device is suitably illuminated, a holographic reconstruction of the picture is formed downstream of the display device. The holographic reconstruction includes a plurality of image points. The hologram is arranged such that each image point of the holographic reconstruction is formed using a contiguous group of pixels of the display device. Each contiguous group of pixels includes less than 5% of a total number of pixels of the display device.

A driver for a display device includes a plurality of pixels. The driver is arranged to drive the display device to display a hologram of a picture on the plurality of pixels such that, when the display device is suitably illuminated, a holographic reconstruction of the picture is formed. The holographic reconstruction includes a plurality of image points. The hologram is arranged such that each image point of the holographic reconstruction is formed using a contiguous group of pixels of the display device. Each contiguous group of pixels has a first shape including a first side and a second side. The first and second sides are arranged such that, if the first shape is replicated, a respective first side of a first replica of the first shape is suitable for cooperating with a respective second side of a second replica of the first shape.

An imaging system includes a light source configured to produce a plurality of spatially separated light beams. The system also includes an injection optical system configured to modify the plurality of beams, such that respective pupils formed by beams of the plurality exiting from the injection optical system are spatially separated from each other. The system further includes a light-guiding optical element having an in-coupling grating configured to admit a first beam of the plurality into the light-guiding optical element while excluding a second beam of the plurality from the light-guiding optical element, such that the first beam propagates by substantially total internal reflection through the light-guiding optical element.

A laser beam (L50) is reflected by a light beam scanning device (60) and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (45). At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam (L60) on the hologram recording medium (45) is changed with time. Diffracted light (L45) from the hologram recording medium (45) produces a reproduction image (35) of the linear scatter body on a light receiving surface (R) of the stage 210. When an object is placed on the light receiving surface (R), a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured.

Holographic projection of a digital object. A method includes identifying movement of a digital object in video content. The movement is along a path across a plurality of video frames of the video content. The method presents the video content on at least one display device. The presenting includes projecting a three-dimensional holographic image of the digital object adjacent to a surface of the display. The projecting traces the holographic image along the path across the plurality of video frames.

A mirror and information image display assembly (300) for a vehicle, a holographic information image display system (300, 106, 104), a vehicle (100) comprising such an assembly, and a method of providing image information to an occupant of a vehicle are disclosed. The assembly has a reflective layer (302) and an image display means (304, 306), for displaying image information to an occupant of the vehicle. The image display means comprises a hologram (304), and a lighting means comprising a light source (306) for illuminating the hologram.

A display system (300) comprising an optical system and a processing system. The optical system comprising a spatial light modulator (380), a light source, a Fourier transform lens, a viewing system (320, 330) and a processing system. The spatial light modulator is arranged to display holographic data in the Fourier domain, illuminated by the light source. The Fourier transform lens is arranged to produce a 2D holographic reconstruction in the spatial domain (310) corresponding to the holographic data. The viewing system is arranged to produce a virtual image (350) of the 2D holographic reconstruction. The processing system is arranged to combine the Fourier domain data representative of a 2D image with Fourier domain data representative of a phase only lens to produce first holographic data, and provide the first holographic data to the optical system to produce a virtual image.

A light irradiation device is an apparatus for irradiating an irradiation object, and includes a light source outputting readout light L1, a spatial light modulator modulating the readout light L1 in phase to output modulated light L2, and a both-sided telecentric optical system including a first lens optically coupled to a phase modulation plane of the spatial light modulator and a second lens optically coupled between the first lens and the irradiation object, and optically coupling the phase modulation plane and the irradiation object. An optical distance between the phase modulation plane and the first lens is substantially equal to a focal length of the first lens. The spatial light modulator displays a Fresnel type kinoform on the phase modulation plane.