An ultrasonic apparatus (100) for creating a holographic ultrasound field (1) comprises an ultrasound source device (10) being adapted for creating an ultrasound wave, and a transmission hologram device (20) having a transmission hologram (21) and an exposed acoustic emitter surface (22), said transmission hologram device (20) being acoustically coupled with the ultrasound source device (10) and being arranged for transmitting the ultrasound wave through the acoustic emitter surface (22) and creating the holographic ultrasound field in a surrounding space, wherein the acoustic emitter surface (22) is a smooth surface which do not influence the field distribution of the ultrasound wave. Furthermore, a method of creating a holographic ultrasound field in an object (3), wherein the ultrasonic apparatus (100) is used, and applications of the ultrasonic apparatus (100) are described.

A lighting device for vehicles having a housing in which is arranged a hologram light fixture that has a light source unit and has an optical unit with a hologram element for generating a predetermined lighting function. An auxiliary element is associated with the light source unit, by means of which light that is emitted by the light source unit can be deflected in the direction of the hologram element. In this design, the light source unit and/or the auxiliary element is arranged in the region of a side of the hologram element or in the region of a lateral extension of an edge of the hologram element extending in the direction of a central axis of the hologram element.

An optical device includes a hologram recording member on which a hologram image is recorded, a light source for reproducing the hologram image, a first reflecting surface for projecting the hologram image ahead of the hologram recording member by reflecting a light from the light source into a rear side of the hologram recording member at a predetermined angle, and a second reflecting surface for generating a backlight by reflecting the light from the light source into the rear side of the hologram recording member.

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.

[Problem] A penlight used for decoration or as a flashlight for the purpose of illuminating the surroundings lacks functionality for optimal enjoyment of a hologram, and no conventional illumination device for a hologram has decorative effect. [Solution] The present invention has a hologram support unit, a light source, and a light diffuser, and by primarily irradiating the light diffuser from the light source, decorative effect is increased, and primarily a hologram image region can be illuminated from a predetermined angle from the same light source or a different light source. Appropriate observation is made possible by making note to an observer on a portion of a medium material integrated with a hologram material whether to irradiate illuminating light from above or irradiate illuminating light from below.

The present invention discloses an article of jewelry, preferably a necklace with a hologram. The disclosed apparatus is provided with a hologram to display various things within the necklace and make it appear more stylish and enhancing the decorative appeal. The disclosed apparatus is capable of interacting with the multimedia devices like phone and can connect with them to display images and other things present in them via hologram in the necklace.

An apparatus and method for displaying holograms. A compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light.

A sight assembly for mounting to a weapon. A holographic optical element and a light source are in a fixed angular configuration with respect to one another, but may be adjusted either together or individually in a horizontal or vertical direction. The sight assembly may have a mirror or lens. An adjustment mechanism is provided where a shaft includes at least two portions wherein the two portions of the shaft of the screw have different pitch directions and/or pitch dimensions allowing for slight adjustment the assembly. The light source may be a vertical-cavity surface emitting laser (VCSEL). A temperature sensor may sense a temperature of the VCSEL. A current to the VCSEL may be adjusted based on a change in the temperature such that the output wavelength is approximately the same as a desired wavelength. The assembly may further allow for perceived image distance adjustment using parallax mismatch.

A laser landscape lighting apparatus for use in accent lighting applications for landscapes and outdoor venues. In one embodiment, the laser landscape lighting apparatus includes a coherent light source in combination with a diffractive optical element and optionally a diffraction grating wheel. The diffractive optical element may be, for example, a holographic optical element. In some embodiments, the laser landscape lighting apparatus includes a temperature-controlled integral derivative system. In one application, the laser landscape lighting apparatus may project a static or movable star field.

A projection-type display device is connectively coupled to a mobile device (such as a smartphone) where the light generated by a small projection device is directed at a relatively transparent holographic optical element (HOE) to provide a display to an operator of the mobile device or a viewer. The projector and HOE may be configured to produce and magnify a virtual image that is perceived as being displayed at a large distance from the operator who views the image through the HOE. The HOE may comprise a volume grating effective at only the narrow wavelengths of the projection device to maximize transparency while also maximizing the light reflected from the display projector to the eyes of the operator.