Abstract: A device for measuring a time of flight of a measuring light beam, comprising a measuring light source for emitting the beam, a light sensor for detecting the beam, a waveguide, and a data processing device. The waveguide is designed to guide the beam emitted by the measuring light source to an object situated in an object region of the device and the beam reflected off the object to the light sensor at least partially through the waveguide, wherein the waveguide includes a measuring diffraction structure for wavelength-dependent deflection of the beam and wherein the beam traverses a wavelength-dependent path length in the waveguide. The data processing device is configured to determine, when measuring the time of flight, an optical path length contribution and/or a time-of-flight contribution for the beam detected by the light sensor, taking into account the wavelength-dependent path length of the beam within the waveguide.

Abstract: The invention relates to a method for producing a laminating component or a hologram component. A holographic material, such as a holographic film, is connected either to a laminating agent in order to form a laminating component or to a transparent reinforcing material in order to form a hologram component In order to produce a composite glass, the laminating component or the hologram component can then be laminated between two glass panes, which can be curved in particular. By virtue of the laminating agent of the laminating component or the reinforcing material of the hologram component, damage to the hologram imprinted in the holographic material can be prevented or reduced.

Abstract: The lighting device comprises an optical block having a coupling portion with a coupling face which is arranged to couple light into the optical block and a waveguide portion extending away from the coupling portion and designed to guide the light by multiple reflection between an upper face and a lower face of the waveguide portion. The optical block also comprises a holographical optical element that is formed in the waveguide portion and is designed to reconstruct a hologram by means of the light.

Abstract: A lighting device, in particular a rear luminaire, for a vehicle is provided. The lighting device has a hologram and a light source for illuminating the hologram. An image, more particularly a real image, is thereby generated, which can also lie outside the physical boundaries of the lighting device.

Abstract: A waveguide includes a partially transparent incoupling portion, having a decoupling portion spaced apart therefrom in the lateral direction, having a substantially transparent base body outside the incoupling and outcoupling portions. The transparent base body has front and rear sides, the wave guide having a diffractive incoupling structure in the incoupling portion and a decoupling structure in the decoupling portion, the diffractive incoupling structure configured to diffract radiation coming from an object and incident on the incoupling portion only in part such that the diffracted part propagates to the decoupling portion by reflections in the base body as incoupled radiation, The decoupling structure deflects part of the incoupled radiation such that the deflected part exits the base body in the decoupling portion via the front or rear side as decoupled radiation, and the diffractive incoupling structure has a diffractive efficiency which continually decreases toward one edge of the incoupling portion.

Abstract: Different examples relate to techniques in order to actively or passively stabilize the temperature of a holographic optical element. To this end, heat-conducting elements, e.g. silver nanowires or carbon nanotubes, are provided.

Abstract: The invention relates to techniques for producing an HOE by replication of a master HOE. In particular, techniques that allow variable surface shape during replication are described. A curved trajectory is used for exposure.

Abstract: The invention relates to techniques for producing an HOE by replication of a master HOE. In particular, techniques that allow variable surface shape during replication are described. A curved trajectory is used for exposure.

Abstract: Light-emitting devices for motor vehicles are provided, which comprise a reflection hologram. A light-guiding body is provided to direct light from a light source arrangement (4) onto the hologram.

Abstract: An optical system with an entrance pupil, has a first aperture diameter, an exit pupil and a reflective or transmissive filter element spaced at a distance from the entrance pupil, which is designed and arranged such that a second diameter is illuminated on the filter element by a beam passing through the entrance pupil and spreading divergently from this. The second diameter corresponds to n times the first aperture diameter, and n is a number greater than 1, as a result of which the local angular spectrum at each point on the filter element is n times smaller in comparison to the entrance pupil. The filter element selectively reflects or transmits to the exit pupil at each point only a predetermined spectral range. An optical imaging unit comprising the filter element is provided, which images the entrance pupil onto the exit pupil.

Abstract: The present invention relates to a spectrometer for spectral analysis of electromagnetic radiation. The spectrometer comprises an entry slit for entry of the electromagnetic radiation to be analysed and an imaging grating for diffraction of the electromagnetic radiation which has entered. The spectrometer additionally comprises a detector extending at least in one direction to detect the diffracted electromagnetic radiation, and also a support plate in which the entry slit is located. The spectrometer further comprises a housing which is mounted on the support plate, covers the detector and the entry slit and supports the imaging grating. According to the invention the spectrometer further comprises at least three floating bearings for floating mounting of the housing on the support plate, the floating bearings each enabling a displacement between the housing and the support plate on a directional axis and being distributed about a central axis of the housing.

Abstract: An optical assembly having at least a first optical element and a second optical element, both of which are arranged to be movable in a guided manner, is provided. A guide common to both optical elements is present, which provides a guide path that is common to both optical elements during the guided movement of the first optical element and during the guided movement of the second optical element.

Abstract: Methods and apparatuses for mounting a material (1) on a carrier (6) are provided. To this end, the material is arranged on a porous layer (2) of an air bearing arrangement (2, 3).

Abstract: In a base element of a waveguide for a detector system at least a portion of radiation passing via the front side and incident on the diffractive element in a selection region is deflected via the diffractive element such that the deflected portion is propagated as coupled-in radiation in the base element by reflection to the out-coupling region and is incident on the associated out-coupling section of the out-coupling region. The out-coupling region couples at least a portion of the radiation out of the base element such that it is incident on the associated sensor section of the sensor unit, which continuously measures the intensity of the incident radiation and supplies the control unit. The control unit determines the distance of the object from the front side of the base element according to the measured intensity.

Abstract: An illumination apparatus for a motor vehicle comprises: a light source, an optical waveguide with an incident surface and a reflective region; and a hologram arranged on or in the optical waveguide. The illumination apparatus is configured such that light emitted by the light source enters the incident surface of the optical waveguide in the direction of the reflective region, is reflected by the reflective region inside the optical waveguide in the direction of the hologram and interacts with the hologram. The average distance between the light source and the incident surface is at least half as great as the average distance between the reflective region and the hologram.

Abstract: A waveguide for a detector system includes a transparent main body with a partially transparent incoupling region and a decoupling region that is spaced apart therefrom in a first direction. The incoupling region includes a diffractive structure which deflects only part of radiation coming from an object to be detected and impinging on the front face such that the deflected part propagates as coupled-in radiation in the main body by reflections up to the decoupling region and impinges on the decoupling region. The decoupling region deflects at least part of the coupled-in radiation impinging thereon such that the deflected part exits the main body via the front face or rear face in order to impinge on the detector system. The extent of the incoupling region in a second direction transverse to the first direction is greater than the extent of the decoupling region in the second direction.

Abstract: An apparatus for supplying energy to an active eye implant can include a beam expander that includes a first expansion element and a second expansion element. The second expansion element can be configured to provide light that has been expanded twice and is effectively focused. A processes for manufacturing apparatuses for supplying energy to an active eye implant can be based on head geometry data of a user.

Abstract: A screen includes a transparent base body with a front face and a rear face, and an image sensor. The base body includes a coupling-in region and a coupling-out region at a distance therefrom in a first direction. The coupling-in region includes a diffractive structure which deflects only part of the radiation incident on the front face and originating from an object to be detected, such that the deflected part is propagated as coupled-in radiation in the base body by reflection, until it reaches the coupling-out region and is incident on said coupling-out region, and the coupling-out region deflects at least part of said incident coupled-in radiation, such that the deflected part exits the base body via the front face or the rear face and is incident on the image sensor.

Abstract: An optical system comprises an imaging holographic optical element, which produces a floating hologram. An upstream light-forming holographic optical element causes spectral filtering of the light.

Abstract: An imaging apparatus has a plurality of light-emitting elements arranged in a first direction along a line for generating a plurality of modulated light beams wherein the plurality of light-emitting elements comprises a plurality of optical elements, which are arranged in the first direction, and a laser projector apparatus for scanning the optical elements in the first direction. A deflection apparatus is included for adjustably deflecting the plurality of modulated light beams in a second direction, wherein the second direction differs from the first direction; and wherein the deflection apparatus comprises a rotating element and the optical elements are arranged on the rotating element.