A holographic projector comprises an image processing engine, a hologram engine, a display engine and a light source. The image processing engine is arranged to receive a source image for projection and generate a plurality of secondary images from a primary image based on the source image. The source image comprises pixels. Each secondary image may comprise fewer pixels than the source image. The plurality of secondary images are generated by sampling the primary image. The hologram engine is arranged to determine, such as calculate, a hologram corresponding to each secondary image to form a plurality of holograms. The display engine is arranged to display each hologram on the display device. The light source is arranged to Illuminate each hologram during display to form a holographic reconstruction corresponding to each secondary image on a replay plane. The primary image is selected from the group comprising: the source image and an intermediate image

A optic sight apparatus for a weapon that includes an electro-optical sight unit configured to project a reticle image for a sight setting of the optic sight apparatus, a controller electrically connected to the electro-optical sight unit; and a switching apparatus connected to the controller unit, the switching apparatus configured to transmit a sighting control signal to the controller unit to automatically change a current sight setting of the optic sight apparatus to a predetermined sight setting of the optic sight apparatus corresponding to the sighting control signal.

A three-dimensional (3D) holographic display system includes a projector that generates an image with a form of spatially varying modulation on a light beam; holographic processor that performs a holographic method on the image generated by the projector; and memory device that stores holographic data generated in a process of performing the holographic method by the holographic processor. An amplitude of a light field is adaptively replaced by the holographic processor according to significance of respective areas of the image.

There is provided a holographic projector comprising a processing engine, spatial light modulator (403B), light source (401B) and light-receiving surface (405B). The processing engine outputs a computer-generated diffractive pattern defining a propagation distance to an image plane. The spatial light modulator displays the computer-generated diffractive pattern. The light source illuminates the spatial light modulator at an angle of incidence (theta) greater than zero. The light-receiving surface receives spatially-modulated light from the spatial light modulator. The light-receiving surface is substantially parallel to the spatial light modulator (alpha-theta). The light-receiving surface is separated from the spatial light modulator by the propagation distance defined by the computer-generated diffractive pattern

A system includes a laser, a spatial light modulator with a display, and a controller. The controller includes processing circuitry configured to control the display of the spatial light modulator to reduce image speckle of a projected image responsive to the laser based on a time sequential update of a plurality of phase holograms generated responsive to an input frame received at the controller.

There is provided a holographic projector comprising a hologram engine and a controller. The hologram engine is arranged to provide a hologram comprising a plurality of hologram pixels. Each hologram pixel has a respective hologram pixel value. The controller is arranged to selectively-drive a plurality of light-modulating pixels so as to display the hologram. Displaying the hologram comprises displaying each hologram pixel value on a contiguous group of light-modulating pixels of the plurality of light-modulating pixels such that there is a one-to-many pixel correlation between the hologram and the plurality of light-modulating pixels.

A method for producing a hologram (1), (1) for security elements (1a) and/or security documents (1b). One or more virtual hologram planes (10) are arranged in front of and/or behind one or more virtual models (20) and/or one or more virtual hologram planes (10) are arranged such that they intersect one or more virtual models (20). One or more virtual light sources (30) are arranged on one or more partial regions of the surface (21) of one or more of the virtual models (20). One or more virtual electromagnetic fields (40) are calculated starting from at least one of the virtual light sources (30) in one or more zones (11) of the one or more virtual hologram planes (10). In the one or more zones (11), in each case, a virtual total electromagnetic field (41) is calculated on the basis of the sum of two or more, of the virtual electromagnetic fields (40) in the respective zone (11). One or more phase images (50) are calculated from the virtual total electromagnetic fields (41) in the one or more zones (11). A height profile (60) of the hologram (1) is calculated from the one or more phase images (50) and the height profile (60) of the hologram (1) is incorporated into a substrate (2) to provide the hologram (1).

A system includes a laser, a spatial light modulator with a display, and a controller. The controller includes processing circuitry configured to control the display of the spatial light modulator to reduce image speckle of a projected image responsive to the laser based on a time sequential update of a plurality of phase holograms generated responsive to an input frame received at the controller.

The present invention relates to an improved method for marker-free detection of a cell type of at least one cell in a medium using microfluidics and digital holographic microscopy, as well as a device, particular for carrying out the method.

A printing device (106) includes a dynamic holography printing application configured to generate a laser control signal and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light Modulator) control signal based on a two-dimensional content corresponding to a lithography mask. A laser source (110) generates a plurality of incident laser beams based on the laser control signal. A LCOS-SLM (112) modulates the plurality of incident laser beams based on the LCOS-SLM control signal, generates a plurality of holographic wavefronts (214,216), each holographic wavefront forming at least one corresponding focal point. The LCOS-SLM generates a plurality of distinct focused light field regions (506,508,510) at interference points of focal points of the plurality of holographic wavefronts. The plurality of distinct focused light field regions correspond to the two-dimensional content.