A hologram that includes a formation layer and a reflection layer that are laminated. The formation layer has an optical phase modulation structure on a first interface in contact with the reflection layer. When reference light emitted from a point light source enters through a second interface different from the first interface of the formation layer, the entirety or part of an image to be reconstructed by the optical phase modulation structure is reconstructed as spatial information on the point light source side relative to the second interface.

A hologram that includes a formation layer and a reflection layer that are laminated. The formation layer has an optical phase modulation structure on a first interface in contact with the reflection layer. When reference light emitted from a point light source enters through a second interface different from the first interface of the formation layer, the entirety or part of an image to be reconstructed by the optical phase modulation structure is reconstructed as spatial information on the point light source side relative to the second interface.

A hologram image apparatus includes a plurality of holographic panels, each holographic panel comprising a transparent panel encoded with a portion of a composite hologram image. The hologram image apparatus also includes one or more light sources configured to illuminate each holographic panel of the plurality of the holographic panels from one or more incident angles to produce the composite hologram image.

The present disclosure discloses a hologram recording device and a hologram recording method. The hologram recording device comprises an object imaging unit comprising a cavity for accommodating an object whose interior wall is a reflective surface, and a light modulating unit configured to produce incident light and reference light interfering with the incident light and to direct the incident light to the object imaging unit. The cavity is provided with an imaging aperture for imaging of the object and at least one light incidence aperture for allowing the incident light to enter the cavity and irradiate on the object, such that an image of the object is formed at a location corresponding to the imaging aperture outside the cavity, and image light produced upon the imaging of the object interferes with the reference light at the location for recording of an image surface hologram.

A hologram image apparatus includes a plurality of holographic panels, each holographic panel comprising a transparent panel encoded with a portion of a composite hologram image. The hologram image apparatus also includes one or more light sources configured to illuminate each holographic panel of the plurality of the holographic panels from one or more incident angles to produce the composite hologram image.

A lightguide structure for illumination, detection and/or holographic representation includes at least one planar lightguide for guiding electromagnetic radiation of at least a first spectrum, at least one illumination arrangement located on the first side face of the lightguide, and at least one holographic outcoupling structure for coupling out electromagnetic radiation guided in the lightguide structure. The light radiated in by the illumination arrangement can have a large angular range, the holographic outcoupling structure having a small angular range. Also provided is a production method for such a lightguide structure and to an operating element comprising a lightguide structure.

The present disclosure discloses a hologram recording device and a hologram recording method. The hologram recording device comprises an object imaging unit comprising a cavity for accommodating an object whose interior wall is a reflective surface, and a light modulating unit configured to produce incident light and reference light interfering with the incident light and to direct the incident light to the object imaging unit. The cavity is provided with an imaging aperture for imaging of the object and at least one light incidence aperture for allowing the incident light to enter the cavity and irradiate on the object, such that an image of the object is formed at a location corresponding to the imaging aperture outside the cavity, and image light produced upon the imaging of the object interferes with the reference light at the location for recording of an image surface hologram.

A lightguide structure for illumination, detection and/or holographic representation includes at least one planar lightguide for guiding electromagnetic radiation of at least a first spectrum, at least one illumination arrangement located on the first side face of the lightguide, and at least one holographic outcoupling structure for coupling out electromagnetic radiation guided in the lightguide structure. The light radiated in by the illumination arrangement can have a large angular range, the holographic outcoupling structure having a small angular range. Also provided is a production method for such a lightguide structure and to an operating element comprising a lightguide structure.