A novel electronic system provides fast three-dimensional model generation, social content sharing of dynamic three-dimensional models, and monetization of the dynamic three-dimensional models created by casual consumers. In one embodiment, a casual consumer utilizes a dedicated real-time 3D model reconstruction studio with multiple camera angles, and then rapidly create dynamic 3D models with novel computational methods performed in scalable graphics processing units. In another embodiment, uncalibrated multiple sources of video recording of a targeted object are provided by a plurality of commonly-available consumer video recording devices (e.g. a smart phone, a camcorder, a digital camera, etc.) located at different angles, after which the uncalibrated multiple sources of video recording are transmitted to a novel cloud computing system for real-time temporal, spatial, and photometrical calibration and 3D model reconstruction. The dynamic 3D models can be uploaded, listed, and shared among content creators and viewers in an electronic sharing platform.

The techniques, apparatus, material and systems are described for a portable camera device which can be attached to the camera port of a conventional transmission or reflection microscope for complex wave front analysis. At least one holographic element (BS, grating) splits the beam (s) containing the sample information in two beams (r,o) and filters (r, o) them. The proposed invention has a relaxed alignment sensitivity to displacement of the beam coming from the microscope. Besides since it compensates the coherence plane tilt angle between reference and object arms, it allows for creating high-visibility interference over the entire field of view. The full-field off-axis holograms provide the whole sample information.

The present invention provides a digital hologram recording system and a numerical reconstruction method for a hologram, which are used for capturing an image of an object and recording it as a holographic data. Said system comprises: signal light, formed after irradiating the object with a light source; an image detector, for recording interference fringes of the signal light; and a light pipe, arranged in a path of the signal light and located between the object and the image detector, wherein the light pipe has a reflection surface, and a part of the signal light enters the image detector after reflected by the reflection surface of the light pipe. The present invention can make the collected signal equivalent to several times of the pixel counts of the image detector, thereby able to break through the spatial bandwidth limitation and shortening the amount of time required to measure the hologram.

A system and method of providing internet-based teaching utilizing a holographic projection is disclosed. The system receives a query from a user via a user device. The system parses the query and generates a response to the query. The system generates a holographic image emulating a real-life educator. Further, the system generates a voice response corresponding to the response. The system integrates the holographic image and the voice response and presents it at the user device in order to create an impression that a real-life professor responded to the query. The system captures the essence of in-person instruction, offering students a uniquely engaging and adaptive educational journey in the digital realm.

An apparatus and method are introduced to produce a hologram of an object from electromagnetic radiation, such as incoherent light, received from the object. The electromagnetic radiation is received by a receiving assembly and transformed into a plurality of co-linear co-propagating beams with different focal distances. The interference of the plurality of beams is enabled by projecting components of each beam along a common polarization direction. The interference patterns thus formed are recorded and then processed to form the hologram of the object.

A 3D optical microscope device of a small form factor optical system is disclosed. A transmission optical system device comprises a first lens having a left side disposed in contact with an input plane, and a second lens having a right side disposed in contact with a rear focal plane and disposed at a position spaced apart by a focal length of the first lens. The first lens and the second lens Fourier-transform a light signal incident on the input plane and output the transformed signal to the rear focal plane.

A lens-less system for holographic imaging or a holographic imaging device is provided. The method/device includes a stationary image sensor to capture an image of a sample illuminated by light from a stationary illumination source. A reference lens-less holographic image may be captured and used as a base line to reduce image artifacts and/or remove noise from the lens-less holographic image. Since real wavefronts produced by a diverging point source are neither perfectly spherical nor planar but a combination of both qualities, theoretical estimates for wavefront reconstruction based on perfectly planar or spherical incident waves cannot be applied accurately. The method/device here provides a solution by performing a calibrated wavefront reconstruction based on equations governing coherent light propagation for both spherical waves and planar waves with a mathematical correlation between numerical magnification and propagation depth to produce accurate three-dimensional details of the object.

The invention relates to an optical system (1) comprising at least the following components: a first holography arrangement (2) comprising a first diffraction element (3) which is formed by a first prism arrangement (4) having at least a quadrangular base surface, wherein a lateral surface of the first prism arrangement (4) has the following lateral surface regions: a first entrance surface (31) for reference light (100) extending along a first entrance plane (310), a second entrance surface (32) for object light (200) extending along a second entrance plane (320), wherein the first and second entrance surfaces (31, 32) form opposite lateral surface regions of the first prism arrangement (4), an exit surface (33) which extends along an exit plane (330) and through which diffracted reference light (102) and diffracted object light (201) can exit from the first diffraction element (3), a prism surface (34), opposite to the exit surface (33), extending along a prism plane (340), an optical transmission diffraction grating arrangement (36) which is arranged in the first diffraction element (3) and extends along a diffraction plane (360), which intersects the first entrance plane (310), between the first entrance surface (31) and the exit surface (33), wherein the transmission diffraction grating arrangement (36) of the first diffraction element (3) comprises at least one first volume phase hologram grating, and in that the first holography arrangement (2) has, on the side of the prism surface (34), a first mirror (35) having a first mirror plane (350), wherein the first mirror plane (350) encloses an angle with the diffraction plane (360) and the prism plane (340) encloses an angle .sub.2 with the diffraction plane (360), wherein at least one of the angles , .sub.2 is different from 45.

An apparatus and method are introduced to produce a hologram of an object from electromagnetic radiation, such as incoherent light, received from the object. The electromagnetic radiation is received by a receiving assembly and transformed into a plurality of co-linear co-propagating beams with different focal distances. The interference of the plurality of beams is enabled by projecting components of each beam along a common polarization direction. The interference patterns thus formed are recorded and then processed to form the hologram of the object.

A holographic camera system includes an imaging lens, a polarizer configured to circularly polarize light incident from the imaging lens, a geometric phase lens with a phase delay of /4, and an image sensor configured to replicate an interference pattern through self-interference of light output from the geometric phase.