A holographic, single-unit, augmented sight has a housing containing a see-through holographic eyepiece; at least one of a visible light digital camera and an LWIR digital camera; a display to display an image from the camera(s); a shutter presenting the display; a red dot fiber-coupled LED reticle assembly using a spherical ball configuration sandwiched between two matching seats which are compressed together to contain the spherical ball configuration optical position; and a lever attached to the spherical ball configuration to rotate the ball by moving the lever up/down, left/right to adjust windage and elevation; a lower coupling prism presenting the reticle of the reticle assembly.

A display device accesses holographic data corresponding to an image. A laser source generates a laser light. A SLM (Spatial Light Modulator) receives the laser light and modulate the laser light based on the holographic data of the image. A partially transparent reflective lens receives the modulated laser light and reflects the modulated laser light towards an eye of a user of the display device. A holographic image is formed in the form of a reconstructed wavefront based on the modulated laser light. The partially transparent reflective lens is disposed adjacent to the eye of the user.

A holographic sporting/combat optic may be mounted to weapon. The holographic sporting/combat optic includes a laser diode, a holographic recording element and one or more optical components arranged in a housing. In response to a light beam incident thereon, the holographic recording element projects a composite, multidimensional reticle image into the optical viewing window. Of note, the holographic recording element has two or more reticle elements recorded thereon which form the composite reticle image. Each of the two or more reticle elements is captured at a different distance from the weapon during different exposures of the holographic recording element.

A hologram display apparatus and a hologram display method are provided. The hologram display apparatus includes a controller and a display device. The controller is configured to obtain plural grayscale values G.sub.i of an image of a to-be-displayed object, generate plural display sub-image codes Q.sub.j according to the plurality of grayscale values G.sub.i and transmit the plurality of display sub-image codes Q.sub.j to the display device, where i=1, 2, . . . , m, j=1, 2, . . . N, each of m and N is a positive integer. The display device is configured to generate and display plural sub-holograms according to the plurality of display sub-image codes, a quantity of the plurality of sub-holograms being equal to that of the plurality of display sub-image codes, such that the plurality of sub-holograms are superimposed to generate a hologram of the image of the to-be-displayed object in human eyes.

A display system for presenting a holographic image to a viewer may comprise a coherent light source, a display element, and a computing device operatively connected to the coherent light source and the display element, the coherent light source emitting a light that enters the display element from the same side of the viewer, and the display element comprising a liquid crystal layer and a partially-transmissive-partially-reflective layer, wherein the computing device is configured to provide a control signal to the display element to present the holographic image, wherein the liquid crystal layer receives light from the light source and is controlled by the control signal to modulate a phase of the light from the light source, and wherein the partially-transmissive-partially-reflective layer receives light from the liquid crystal layer and reflects the light back through the liquid crystal layer to the viewer.

A holographic head-up display device includes: a light source portion that emits coherent light; an optical modulation portion that modulates the coherent light; a relay optical system that focuses the modulated light; a filter mirror that includes a reflection area disposed at a focal position of the relay optical system and reflecting light incident through the relay optical system and an absorption area disposed at the periphery of the reflection area and absorbing light incident through the relay optical system; and a transflective mirror that partially transmits and partially reflects light reflected by the filter mirror.

Systems, methods, and computer-readable media are disclosed for controlling parameters of a holographic image. A gaze direction of a user is detected and user interaction data indicative of the gaze direction of the user is generated. A determination is then made using the user interaction data that the gaze direction of the user at least partially coincides with an object of interest. A further determination is made that the object of interest is at least partially obscured by the holographic image. One or more of the parameters of the holographic image are then adjusted to enhance visibility of the object of interest to the user.

The invention relates to a display device, in particular a head-mounted display or hocular, having a spatial light modulator and a controllable light-deflecting device for generating a multiple image of the spatial light modulator, which consists of segments, the multiple image being produced at least with a predefinable number of segments which determines the size of a visible area within which a 3D-scene holographically encoded in the spatial light modulator can be reconstructed for observation by an eye of an observer.

A target spotting device incorporating target acquisition improvements using patterned dichroic coatings wherein a color is assigned to an individual Bullet Drop Compensation reticle and/or other reticle elements to improve the observer's rate of target acquisition is disclosed. These dichroic patterns coatings can also be used individually or with etch and fill, chrome, anti-reflective chrome or holographic reticle elements. Patterned dichroics coatings can be incorporated into both 1st or 2nd focal plane reticle locations.

A method for displaying a hologram to a variable direction including using circuitry to determine a direction from a holographic projector to a viewer for projecting a hologram to a viewer, and projecting a hologram in the determined direction, in which the projecting the hologram includes reflecting from a same mirror as the determining the direction of the viewer, and the circuitry controls the projecting the hologram to a direction corrected for a difference in direction between a projecting unit and a tracking unit relative to the mirror. Related apparatus and methods are also described.