US20180024361A1 - Methods and devices for data projection - Google Patents

Methods and devices for data projection Download PDF

Info

Publication number
US20180024361A1
US20180024361A1 US15/545,873 US201615545873A US2018024361A1 US 20180024361 A1 US20180024361 A1 US 20180024361A1 US 201615545873 A US201615545873 A US 201615545873A US 2018024361 A1 US2018024361 A1 US 2018024361A1
Authority
US
United States
Prior art keywords
holographic element
image
imaging
wavelength
wavelengths
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/545,873
Other languages
English (en)
Inventor
Christoph Erler
Matthias Burkhardt
Alexandre Gatto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jenoptik AG
Original Assignee
Carl Zeiss Jena GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Zeiss Jena GmbH filed Critical Carl Zeiss Jena GmbH
Assigned to CARL ZEISS JENA GMBH reassignment CARL ZEISS JENA GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BURKHARDT, MATTHIAS, ERLER, Christoph, GATTO, ALEXANDRE
Publication of US20180024361A1 publication Critical patent/US20180024361A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/211—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays producing three-dimensional [3D] effects, e.g. stereoscopic images
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/29—Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
    • B60K2350/2008—
    • B60K2350/2017—
    • B60K2350/2047—
    • B60K2350/2052—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/18—Information management
    • B60K2360/188—Displaying information using colour changes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/333—Lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/334—Projection means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
    • G02B2027/0109—Head-up displays characterised by optical features comprising holographic elements comprising details concerning the making of holograms

Definitions

  • the present application relates to methods and devices for data projection, in particular for what are known as head-up displays (HUDs).
  • HUDs head-up displays
  • the present application in particular relates to methods and devices of this type that may be used in vehicles, in particular in motor vehicles.
  • the methods and devices described in this application can also be used for different applications, in particular in all transparent panes.
  • the described methods and devices can also be used in transparent panes of other vehicles, such as trains, buses, ships or planes, or in real estate for windowpanes, if data projection is desired here.
  • projected data can comprise images, videos, symbols, characters and/or numbers.
  • One area of application of such methods and devices for data projection is the automotive field, for example for providing data to a handler of a vehicle, for example a driver of a car, during driving.
  • This can be realized, for example, by way of corresponding elements in a windshield of a vehicle, as a result of which the driver does not need to specifically direct his gaze onto a display, for example of an instrument cluster, in order to obtain data, but can substantially perceive said data without substantially averting his gaze from the road.
  • Such methods and devices are known, for example, generally from DE 10 2008 039 737 A1. That document proposes a holographic optical element in a windshield for providing a reflection for the human eye, wherein the concepts in particular relating to inclined windshields of passenger cars are explained.
  • a device for data projection comprising: a holographic element to be arranged by, e.g. in or on, a carrier, and an imaging device that is adapted and arranged to transmit light corresponding to data to be projected to the holographic element, wherein the holographic element is adapted to steer light received from the imaging device to a viewing site.
  • a hologram in particular an imaging hologram, a compact structure as possible.
  • the apparatus can be adapted to represent a three-dimensional object.
  • the imaging device can comprise an amplitude modulator and a phase modulator for generating three-dimensional images.
  • the holographic element can be adapted for imaging an image provided by the imaging device onto at least one intermediate image which is viewable from the viewing site.
  • a distance between the intermediate image and the viewing site can here be at least 2 m, but is not limited thereto.
  • the at least one intermediate image can comprise a real image. It is also possible hereby for example for 2D or 3D images (or objects) to be represented in a plane between the holographic element (or a display) and a viewer.
  • the at least one intermediate image can comprise a virtual image.
  • the at least one intermediate image can comprise at least two intermediate images. In this way, representation in different planes, at different sites or for different viewers is possible.
  • the at least two intermediate images can be arranged in particular at various distances from the holographic element, which corresponds to a representation in different planes.
  • the at least two intermediate images can also be viewable from respectively different viewing sites. For example, different contents can be provided to different viewers (e.g. driver and front passenger), or the size of an available eyebox can be increased.
  • the holographic element can be adapted for generating a first intermediate image of the at least two intermediate images on the basis of a first group of wavelengths, and a second intermediate image of the at least two intermediate images on the basis of a second group of wavelengths that differ from the wavelengths of the first group. In this way, separate color images can be generated.
  • the imaging device can comprise a first imaging system for generating a first intermediate image of the at least two intermediate images and a second imaging system ( 121 ) for generating a second intermediate image of the at least two intermediate images, wherein the first imaging system and the second imaging system are arranged at different sites.
  • a first imaging system for generating a first intermediate image of the at least two intermediate images
  • a second imaging system for generating a second intermediate image of the at least two intermediate images
  • the holographic element can also comprise a holographic diffusion screen.
  • the hologram plane acts as a projection screen for a defined wavelength and deflection angle range. Consequently, the use of compact laser projectors is in particular made possible.
  • the image is formed directly on the pane as a real image.
  • the device can furthermore comprise the carrier, wherein the carrier can comprise a windshield which is arranged at an angle of ⁇ 30°, for example ⁇ 15° or equal to 15°, with respect to the perpendicular.
  • the holographic element By adapting the holographic element to an approximately perpendicular carrier (for example in the range of less than 30° with respect to the perpendicular), a simple application in trucks, buses and other vehicles, which have approximately perpendicular front panes, is possible.
  • An angle between a chief ray of the light coming from the imaging device in a direction of the holographic element and a perpendicular on the windshield can here be between 40 and 80°.
  • the holographic element can be adapted to direct light, which is incident on the holographic element at a specific angle range, to the viewing site, and to be transparent for light outside the specific angle range.
  • the holographic element can be adapted to be transparent for light outside one or more specified wavelength ranges, wherein the wavelength ranges can have in particular a spectral bandwidth of ⁇ 20 nm or ⁇ 10 nm. Within the one or more wavelength ranges, the holographic element can have, for example, a high diffraction efficiency. The one or more wavelength ranges can then be used as operating wavelengths of a head-up display.
  • the one or more wavelength ranges can comprise a wavelength in the red range, a wavelength in the green range, and a wavelength in the blue range. It is preferred here for wavelengths of this imaging device to be tuned exactly to the wavelengths of the holographic element, for example with a deviation of less than 2 nm, which makes it possible for pixels of different colors to be located laterally and exactly one on top of the other in the depth and thus for mixed colors, e.g. white, to be generated relatively precisely. In the case of monochromatic use, greater deviations or a greater operating range (for example in the range of 30 nm) are possible. It is also possible for more than three such wavelengths to be used, for example to permit polychromatic operation.
  • the one or more wavelength ranges can comprise a first group of wavelength ranges and a second group of wavelength ranges, wherein the holographic element can be adapted to direct wavelengths of the first group to a different viewing site than wavelengths of the second group. Representation of color images at different sites is thus possible.
  • the combination of operating wavelengths and a chief deflection direction can be realized in a targeted manner such that the reflection hologram in or on the pane blocks light from the environment, in particular from the main viewing directions of the vehicle handler, wherein the blocked wavelengths can correspond to those of commercial laser pointers.
  • the specifically adapted HUD is additionally able to effectively reduce the risk of accidental or deliberate glare or injury to the driver due to laser sources which are not eye-safe.
  • the holographic element can be adapted to protect a viewer of the holographic element against external laser radiation.
  • the holographic element can have an imaging function.
  • the holographic element can be adapted—e.g. by way of suitable light exposure—to a curvature of the carrier, e.g. a windshield.
  • a method for operating a device as described above comprising:
  • Said illuminating can comprise illuminating with light of a red wavelength, a green wavelength, and a blue wavelength.
  • a holographic element in a windshield for protecting against laser pointers.
  • FIG. 1 shows a schematic illustration of a device for data projection according to an embodiment
  • FIG. 2 shows an illustration of a device for data projection according to a further embodiment
  • FIG. 3 shows an illustration of a device for data projection according to a further embodiment
  • FIG. 4 shows a flow chart for demonstrating a method according to an embodiment
  • FIG. 5 shows an illustration of a device for data projection according to a further embodiment
  • FIG. 6 shows an illustration of a holographic element for protection against laser radiation according to an embodiment
  • FIG. 7 shows an illustration of a device for data projection according to a further embodiment
  • FIG. 8A to FIG. 8C show illustrations for demonstrating the production of a device according to an embodiment
  • FIGS. 9A and 9B show illustrations for demonstrating the production of the device according to a further embodiment
  • FIG. 10 shows a schematic illustration of a device for data projection according to a further embodiment
  • FIG. 11 shows a schematic illustration for demonstrating the production of a device according to the embodiment of FIG. 10 .
  • FIG. 12 shows a schematic illustration of a device for data projection according to a further embodiment
  • FIG. 13 shows a schematic illustration of a 3D imaging device.
  • a holographic element for data projection is used.
  • the holographic element can in particular be wavelength-selective, for example for a red, a green, and/or a blue wavelength, and be transparent for other wavelengths.
  • FIG. 1 illustrates a device according to an embodiment.
  • a holographic element 11 is mounted on a carrier 10 .
  • the carrier 10 can be, in particular, a windshield of a vehicle.
  • the carrier 10 is an approximately perpendicular windshield, for example a windshield which is inclined by at most 15° or at most 10° with respect to the perpendicular, as is used for example in buses or trucks.
  • Such windshields can in particular have curvatures.
  • the holographic element 11 is provided on or in the carrier 10 .
  • the holographic element 11 can act, for example, as a diffusion screen, but can also have an imaging effect for generating an intermediate image. Examples of this will be explained below with reference to FIGS. 2 and 3 .
  • the holographic element 11 can be wavelength-selective in a narrow band, i.e. have an imaging function and/or diffusion-screen function only for wavelengths within one or more narrow spectral ranges, while it remains transparent for the remaining wavelengths. In this way, the holographic element 11 is transparent for most wavelengths, and permits, for example, a view through a windshield which serves as the carrier 10 .
  • Narrowband in this case can be understood to mean that a function of the holographic element applies only in one or more spectral ranges of a width of ⁇ 20 nm or ⁇ 10 nm, in particular for specific wavelengths ⁇ a production-related tolerance.
  • a holographic function for a red, a blue, and a green wavelength can be present, as a result of which projection of colored data becomes possible with simultaneous pellucidity for the greatest portion of the visible light.
  • the device of FIG. 1 furthermore comprises an imaging device 12 (also referred to as imaging system below), which directs light, corresponding to data to be projected, toward the holographic element 11 .
  • the imaging device 12 can scan, for example, the holographic element 11 by way of one or more laser beams (for example a red, a green, and/or a blue laser beam).
  • the imaging device 12 itself can have, for example, a diffusion screen, and the light corresponding to the light on the diffusion screen is directed to the holographic element 11 in the form of light 13 .
  • the imaging device 12 can also comprise, for example, a display such as an (O)LED, LCD or TFT display as an imaging element.
  • the holographic element 11 then directs the light 13 corresponding to a holographic function of the holographic element 11 , in the form of light 14 , to an eye 15 of a viewer, as a result of which the viewer can view the projected data.
  • the installation space required for the data projection can be reduced.
  • imaging properties of the hologram 11 can be selected such that further imaging elements, for example for magnification, such as for example free-form mirrors or lenses, and/or elements for beam folding are not necessary.
  • FIG. 2 shows a device for data projection according to an embodiment.
  • the embodiment of FIG. 2 serves for projecting data into a windshield 20 , which serves as a carrier for a holographic element 25 .
  • the windshield 20 is inclined.
  • the windshield 20 can be perpendicular or approximately perpendicular, as is the case e.g. in a windshield of a truck or a bus.
  • a holographic element 25 is arranged on or in the windshield 20 .
  • the holographic element 25 can in particular comprise a volume hologram, in which an imaging function was holographed in one or more layers.
  • this function can in particular be holographed for three discrete wavelengths in the red, blue and green ranges, such that the holographic element 25 has, as described below, an imaging function for these three wavelengths, while it is transparent for other wavelengths and thus in particular permits the view through the windshield.
  • An imaging device 21 illuminates, as indicated by a ray 22 , the holographic element 25 with an image to be represented corresponding to the data to be projected.
  • the image to be represented can be generated, for example, by scanning a diffusion screen with one or more lasers or by way of a display apparatus, such as an LCD display, a TFT display or a light-emitting diode (LED) display (for example on the basis of organic light emitting diodes (OLEDs)).
  • a display apparatus such as an LCD display, a TFT display or a light-emitting diode (LED) display (for example on the basis of organic light emitting diodes (OLEDs)).
  • the holographic element 25 is here illuminated with the image at an angle with respect to a perpendicular 23 on the windshield 20 , wherein the angle can depend on a configuration of the holographic element 25 .
  • the holographic element 25 shows in some embodiments an imaging function only for one or more specific incidence angles (for example between the light ray 22 and the perpendicular 23 ), while it is transparent for other angles.
  • the holographic element 25 images the received image onto a virtual image 25 .
  • the virtual image 25 is, as indicated by way of rays 26 , represented for an eyebox of a viewer's eye 27 .
  • the angle at which the virtual image 25 appears for the eye 27 here differs from the angle at which the image, corresponding to the ray 22 , falls onto the holographic element 25 .
  • the participating angles can be adapted by way of the design of the respective holographic element 25 . In particular, the participating angles can be taken into consideration during the light exposure of the hologram as can a curvature of the windshield 20 .
  • the function of the holographic element in specific embodiments thus becomes effective only for one or more selected wavelengths and only for the incidence at one or more angles, because a Bragg condition has been met only for these angles and wavelength, for example.
  • Light of a different color passes through the holographic element without being obstructed, such that the pane in this case is transparent.
  • FIG. 2 can thus be simply adapted to many different windshields and can be used in particular for approximately perpendicular windshields.
  • the virtual image 25 is imaged at a distance of >2 m, with more preference >4 m, in particular >6 m or >8 m, from the eye 27 .
  • the virtual image 25 can also be generated at a distance of ⁇ 2 m.
  • an angle between the ray 22 and the perpendicular 23 can be in the range of 35°
  • the windshield can be at an angle of 30° with respect to the horizontal
  • a distance of the eye 27 from the windshield can be approximately 80 cm.
  • a viewing angle for the virtual image 25 can be in the range of 5°-7°, and the viewing of the image 25 can be performed at an angle of approximately 65° with respect to the perpendicular on the windshield. For a light exposure setup, corresponding angles can then be selected for the exposure of the hologram.
  • FIG. 5 illustrates a device similar to the device of FIG. 2 for the case of a perpendicular windshield.
  • the windshield is here designated with 50
  • 51 designates a position of a corresponding holographic element.
  • An imaging device 52 illuminates the holographic element 51 at an angle ⁇ between a chief ray from the imaging device 52 to the holographic element 51 and a perpendicular on the windshield 50 , for example between 40 and 80°, with an image that corresponds to data to be projected.
  • the holographic element 51 images this image in virtually magnified fashion, wherein the virtual image 53 can be viewed by an eye 54 in an eyebox.
  • the use of the holographic element 51 here offers the advantage, compared for example to projection head-up displays, that illumination can take place at a substantially arbitrary angle ⁇ (e.g. between 40 and 80°) and viewing can occur near the normal, with the result that here the angle of incidence and the emission angle can differ.
  • the imaging device 52 can here be arranged, for example, in a position above (as shown) or below the windshield. Corresponding configurations are also possible with holographic diffusion screens, as will be described in more detail below.
  • FIG. 3 illustrates a device according to a further embodiment.
  • a holographic element 33 is again provided in a windshield 30 .
  • the holographic element 33 has, in the embodiment of FIG. 3 , a diffusion-screen function (also referred to as a holographic diffusion screen).
  • This diffusion-screen function can again be realized in particular for specific angles of incidence of incident light 32 to a perpendicular 36 and for specific wavelengths, preferably a red, a green, and/or a blue wavelength.
  • the holographic element 33 can be transparent.
  • the holographic element can be directly illuminated, in particular scanned, for example, by way of a laser light source 31 .
  • the image construction occurs, for example as in conventional cathode ray tubes, through line-wise, fast deflection of a light point.
  • the light point in the present case is generally formed by a laser focus and is modulated temporally during the deflection movement in terms of its brightness such that, on account of time averaging within a time interval that the human eye can no longer resolve, the image impression is obtained.
  • the laser light source 31 has three different lasers of red, green, and blue color, with which the holographic element 33 can be scanned such that color representation is possible.
  • other types of polychromatic image generation are possible, i.e. image generation with a plurality of colors.
  • display possibilities using a micromirror device DMD, Digital Micromirror Device
  • a liquid-crystal device for example LCoS, Liquid
  • Crystal On Silicon can be used with temporal triggering.
  • the entire image is here represented successively in the individual colors, with the time sequence of the representation being so quick that the viewer sees only the polychromatic image with the desired image coloring.
  • the wavelengths of the image generation for example red, green, and blue wavelength
  • the deviation between the wavelengths used and the operating wavelengths of the holographic element should be no more than 2 nm. If greater deviations occur, green, red, and blue pixels of the virtual image may no longer be located exactly one on top of the other and thus no correct color mixing takes place. With more accurate tuning, by contrast, the pixels for the different colors are located one on top of the other, and substantially any desired color, for example white or yellow, can be generated.
  • monochromatic representation can also be used, in particular if it is sufficient for a specific application (for example representation of texts or numbers).
  • exact tuning of the wavelengths is not necessary, and the holographic element can be designed for example for a comparatively wide operating range in a range of, for example, 30 nm. The light generated by the imaging system then only has to be located within this operating range to generate an image with the lowest possible distortion.
  • the image projected onto the holographic element 33 which acts as a diffusion screen, can then be viewed by an eye 35 at an angle to the perpendicular 37 .
  • the site of origin of the light for a specific pixel is here determined by the interaction of the laser projector with the geometry of the pane.
  • a low-distortion image can be perceived in a specific spatial region (eyebox).
  • the hologram can be configured locally such that the deflection function of the laser beam can be effected with adequate diffraction efficiency, i.e. the Bragg condition is met at all sites that contribute to the formation of an image.
  • a possible curvature of the windshield 30 is taken into consideration in the holographic element 33 .
  • a laser light source instead of a laser light source, other light sources can also be used for illumination, for example broadband sources such as a halogen lamp in combination with an imaging system.
  • broadband sources such as a halogen lamp in combination with an imaging system.
  • angle of incidence and emission angle of the diffusion screen can also be selected substantially arbitrarily such that an arrangement similar to the arrangement of FIG. 5 , adapted to perpendicular windshields, is possible.
  • Tuning the operating wavelengths and the local deflection function of a holographic element used can, in some embodiments, in addition to the function of data projection, provide a protecting function against the light of the nowadays commonly used laser pointers.
  • the holographic elements already discussed are adapted such that the orientation of the Bragg planes in the hologram layer that ensure the deflection of the data beam path permit blocking of the ingress of light of specific wavelengths (e.g. 532 nm, 640 nm, 450 nm, 405 nm).
  • specific wavelengths e.g. 532 nm, 640 nm, 450 nm, 405 nm.
  • the distance between the Bragg planes must be configured such that a phase delay of the partial reflections at neighboring Bragg planes of a laser pointer wavelength occurs along the optical path of the beam inside the material.
  • volume hologram material with a comparatively large refractive index difference (approximately 0.03) and a comparatively low layer thickness (approximately 10 ⁇ m)
  • the best laser projection exists, for example, for viewing directions running exactly toward the represented image content for exactly the wavelength with which the holographic element operates.
  • a holographic element is designated with 60 .
  • a holographic element of this type can contain a multiplicity of Bragg planes 65 , i.e. planes having slightly different optical refractive indexes, which, in sum, act as selective mirrors, adapted to the pointer wavelengths.
  • An incident beam from an imaging device is designated with 61 , which is diffracted as the beam 62 and steered toward a viewer's eye (e.g. as explained with reference to FIG. 3 ).
  • a normal on the holographic element 60 is designated with 66 .
  • a reflection function can additionally be achieved as protection against a laser beam 63 which is incident from the outside and is substantially reflected (diffracted) as a laser beam 64 .
  • the holographic element 60 can be tuned to wavelengths of laser pointers (for example red, green, or blue semiconductor lasers). Such wavelengths can be integrated, in addition to the already mentioned wavelengths for the data projection, into the design of the holographic element 60 . In this way, a combined function of data display and laser protection (function integration) of the device is obtained, without additional optically effective elements other than the holographic element (also referred to as combiner hologram). The driver or pilot or viewer would thus be protected by the display with respect to the main viewing directions. In order to adapt this protective function to different configurations of the display system, it is possible to exploit the fact that Bragg gratings, which were designed for a specific angle and a specific wavelength, can efficiently diffract a different wavelength at a different angle.
  • the design of the device on the basis of different aspects takes place in a manner such that the main angle of incidence of the object wave starting from the imaging system with respect to the normal vector of the Bragg planes of the grating is for example significantly lower than the expected angle of incidence of a laser pointer, for example by more than 10°, then the operating wavelength of the holographic element for displaying data must in this case be reduced correspondingly with respect to that of the laser pointer (and vice versa). In this way, it would again be possible for the above-mentioned condition with respect to the appropriate phase delay of the partial reflections at the Bragg planes for the laser pointer wavelength to be attained.
  • FIG. 7 illustrates a corresponding laser projection function for the case of a holographic diffusion screen (according to the embodiment of FIG. 3 ).
  • a windshield is designated with 70 and has a holographic diffusion screen 71 .
  • the holographic diffusion screen 71 can be scanned with light from an imaging device 72 , in particular a scanning laser light source with one or more wavelengths, in order to provide data to be projected for an eye/both eyes 73 .
  • the holographic diffusion screen in the embodiment of FIG. 7 provides a protective function.
  • the holographic diffusion screen 71 in the embodiment illustrated is tuned, as described above, to corresponding wavelengths.
  • an incident laser beam 74 is diffusely scattered by the holographic element 71 , i.e. the holographic diffusion screen.
  • FIG. 4 shows a flowchart for demonstrating a method according to an embodiment. The method of FIG. 4 can be used in particular for operating the devices of FIGS. 1-3 .
  • a holographic element is illuminated with light in three spectral colors, for example red, green and blue (rgb), wherein the holographic element is preferably transparent for other wavelengths.
  • the holographic element then directs the light toward a viewing site, wherein the holographic element to this end can image the light onto an intermediate image, which is viewed from the viewing site (for example as shown in FIG. 2 ), or the holographic element can serve as a diffusion screen (for example as shown in FIG. 3 ).
  • FIG. 8A illustrates light exposure of a holographic element 82 for data projection purposes, for example according to the embodiment of FIG. 2 .
  • interference of two opposite spherical waves which can for example be generated using a coherent laser having a sufficient coherence length, is recorded on the holographic element 82 , in particular within a holographic layer.
  • a point light source 80 for emitting one of the spherical waves is here located at the later site of the imaging device and emits what is known as a reference wave, and a further point light source 81 for emitting the other of the spherical waves is located at the site of the later virtual image and emits what is known as a signal wave.
  • the later distance of the imaging device from the holographic element 82 and the distance of the later represented virtual image are fixed. If, for example, the point light source 81 is at a distance of 8 m from the holographic element 82 , then later, during playback, the virtual image will likewise be located at a distance of 8 m from the holographic element 82 .
  • the distance of the virtual image from the eyebox (i.e. substantially from a viewer's eye), will later correspondingly be at least approximately the sum of the distance of the point light source 80 from the holographic element 82 , plus the distance of the point light source 81 from the holographic element 82 . It is thus possible in principle to implement any desired distance of the virtual image during later use.
  • FIG. 8B here shows the application of the holographic element exposed as in FIG. 8A in an “ideal case.”
  • the holographic element is illuminated starting from a point light source 83 (corresponding to an imaging device) with reference light, which results in the formation of a virtual image 84 (corresponding to the position of the point light source 81 in FIG. 8A ), which can be viewed by an eye (eyebox) at 85 .
  • a point light source 83 corresponding to an imaging device
  • reference light which results in the formation of a virtual image 84 (corresponding to the position of the point light source 81 in FIG. 8A ), which can be viewed by an eye (eyebox) at 85 .
  • FIG. 8C shows a real application case.
  • an imaging device 86 is used, which, as opposed to a point light source, has an extent ⁇ y in the y-direction and an extent ⁇ x in the x-direction. This can result in distortions with respect to the ideal case of FIG. 8B , which are, however, negligible to a certain degree for practical applications, depending on a desired image quality.
  • the extent of the imaging device is selected to be comparatively small, and the imaging device is arranged in the vicinity of the site of the point light source 80 .
  • FIGS. 9A and 9B show a further case in which a distance “infinite” of the virtual image from a viewer is implemented.
  • FIG. 9A here illustrates the light exposure of a holographic element 90 .
  • a reference wave 92 is generated by a substantially point-type signal source 91 , corresponding to the signal source 80 of FIG. 8A .
  • a signal wave 93 with a parallel pencil of rays is used, which can be generated for example by a collimated broadened laser beam.
  • FIG. 9B shows the application of the holographic element 90 , which has been exposed as illustrated in FIG. 9 .
  • An imaging device 95 (in the ideal case a point-type source, in the real case a source as illustrated in FIG. 8C ) illuminates the holographic element 90 from a position which corresponds to a position of the signal source 91 . This results in the generation of a virtual image at infinity corresponding to light rays 94 , which can be viewed at a site 96 .
  • Production of a holographic element as a diffusion screen can be effected according to FIG. 8A , where in this case the signal wave is generated by a diffusion screen (instead of by the signal source 81 ), which is located in the vicinity of the holographic element.
  • the holographic diffusion screen is thus recorded in embodiments as a reflection hologram.
  • the form and location of the reference source remain intact, i.e. can be selected like the signal source 80 of FIG. 8A at a suitable angle with respect to the respective holographic element in order to later achieve a suitable arrangement adapted to a respective installation space.
  • a virtual image is generated by way of a holographic element and a corresponding imaging device.
  • a real image can also be generated.
  • Corresponding embodiments will now be explained with reference to FIGS. 10 and 11 .
  • a corresponding modification i.e. provision of a real image instead of a virtual image, can be effected in all discussed embodiments as long as there is sufficient space between the viewer and the holographic element for generating the real image.
  • the real image is generated between the viewer and the holographic element.
  • Such devices are suitable, for example, for representing control elements, which can then be operated by the viewer, wherein conventional devices for gesture recognition (for example camera, distance sensors and the like) can be used to detect the operation.
  • the representation of the control element for example head or rotary switch
  • the representation of the control element can be changed according to the operation, for example turning of the rotary switch can be illustrated.
  • FIG. 10 illustrates an embodiment of a corresponding device.
  • the device of FIG. 10 comprises an imaging device 100 , which can be configured like the imaging device in the above-discussed embodiments, and a holographic element 101 .
  • the holographic element 101 In the case of illumination by way of the imaging device 100 , the holographic element 101 generates a real image at a site 102 , which can be viewed within a box 103 .
  • the real image 102 is thus generated between the viewer (at 103 ) and the holographic element 101 .
  • FIG. 11 illustrates a production process for the holographic element 101 of FIG. 10 .
  • a holographic material as already discussed above, is exposed to a reference beam (or a reference wave) 111 , which diverges starting from a site 112 .
  • the site 112 here corresponds to the site where later the imaging system 100 will be arranged.
  • the holographic material is exposed to a signal beam (an object wave) 110 , which converges toward the site 102 of the real image.
  • this exposure can occur separately for different wavelengths, for example a red, a green, and a blue wavelength.
  • a virtual or real image is represented in one plane.
  • image representation can also be effected in a plurality of planes, at different angles and/or generally at different sites. It is possible here to exploit the fact that the holographic elements used, in particular volume holograms, operate, as already described, in both wavelength-selective and angle-selective fashion. It is thus possible for different colors to be imaged to different sites and/or be viewed from different angles, by selecting, for example, the directions and forms of reference beam and the signal beam for different wavelengths during the production of the holographic element.
  • the operating wavelengths 532 nm (green), 460 nm (blue) and 660 nm (red) can be used for a first image
  • the operating wavelengths 520 nm (green), 442 nm (blue) and 647 nm (red) can be used for a second image.
  • a first virtual image at a first distance from the holographic element for example 1 m
  • a second image at a second distance for example 5 m
  • a polychromatic representation including white
  • a similar case can also be implemented for monochromatic images with in each case only one wavelength.
  • the image generation can be implemented with a single imaging system, which in that case generates a total of 6 different colors, or with separate imaging systems which can also be arranged at different angles. A viewer in the eyebox then sees both contents at different distances.
  • each holographic element only sees “its own” operating wavelengths and is otherwise transparent. Combinations with even more wavelengths and different distances are also possible.
  • the imaging systems are arranged at different sites, it is also possible to use the same wavelengths for both images, since, as mentioned, the holographic elements are also angle-selective.
  • a corresponding embodiment is illustrated in FIG. 12 .
  • a holographic element 122 contains volume holograms for two different imaging systems 120 , 121 .
  • a virtual image is generated at a site 123 on the basis of light from the imaging system 120
  • a virtual image is generated at a site 124 , which has a different distance from the holographic element 122 than the site 122 , on the basis of light from the imaging system 121 .
  • the two virtual images can then be viewed within an eyebox 125 .
  • the projection of the volume holograms for the two imaging systems 120 , 121 can be effected in each case as described above in separate layers.
  • the virtual images can be viewed at the sites 123 , 124 from the same eyebox 125 , i.e. simultaneously.
  • the holographic element 122 and the imaging systems 120 and 121 can be adapted such that the virtual images can be observed “next to one another,” as it were, which can effectively increase the size of the eyebox.
  • the configuration can also be such that separate images can be viewed from different positions, for example from a driver position and a front passenger position in a vehicle. In this way, different contents can be represented for different persons. It is thus possible overall to provide different virtual or real images by way of one or more imaging systems, possibly with different operating wavelengths, at different sites and/or for viewing from different sites.
  • a planar virtual or real image is generated by way of an imaging system device and a holographic element.
  • three-dimensional contents (3D contents) can also be represented.
  • a 3D imaging system can be used, as a result of which the representation of true virtual or real three-dimensional images is made possible.
  • a corresponding imaging system is schematically illustrated in FIG. 13 .
  • the imaging system of FIG. 13 comprises a surface light source 130 , a spatial amplitude modulator 131 and a spatial phase modulator 132 .
  • the spatial amplitude modulator 131 can be used to modulate light generated by the light source 130 in a location-selective manner with respect to the amplitude. Examples of such spatial amplitude moderators are for example LCDs, micromirror devices (DMDs) or LCoS arrangements.
  • the spatial phase modulator 132 can correspondingly be used to modulate the phase of the generated light in a spatially resolved fashion.
  • Corresponding spatial phase modulators are likewise commercially available and can be based, for example, on liquid-crystal technology (e.g. LCoS). It is thus possible to modulate the generated light both with respect to the amplitude and with respect to the phase. Since a 3D impression is brought about in particular by way of different phases of the light that reaches the eye, it is possible with such an arrangement to generate a three-dimensional image.
  • the light source 130 can here also be operated by scanning (for example by way of lasers) to a certain extent, and can have different colors (for example red, green, blue) for a color representation.
  • the artificially generated spatial 3D object is then located in the source point of the reference beam during the recording (reference sign 86 in FIG. 8C ) and can thus be reproduced as a 3 D object increased in terms of size in the source point of the signal source (reference sign 84 in FIG. 8C ) for the respective eyebox.
  • the representation of three-dimensional objects is consequently also possible. Such three-dimensional objects can also be as explained above and used for representing control elements.
  • a high degree of design freedom can be achieved, since less installation space is needed, and in particular also a location of an imaging device can be chosen freely within wide limits.
  • the realization of large-area devices for data projection is simplified, since even in the case of devices having a large viewing field for data projection, no more installation space or hardly any more installation space is required than in small devices (only the size of the holographic element is increased—but applies only to diffusion screen variant with low pane curvature+small viewing angles with respect to the pane normal).
  • simple solutions for perpendicular windshields are provided.
  • a holographic element which is integrated in a windshield is also robust, for example with respect to solar radiation. An optimum protective function against laser pointer radiation from the outside is possible with a targeted design for the majority of designs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Holo Graphy (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Instrument Panels (AREA)
US15/545,873 2015-02-05 2016-02-04 Methods and devices for data projection Abandoned US20180024361A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015101687.7 2015-02-05
DE102015101687.7A DE102015101687A1 (de) 2015-02-05 2015-02-05 Verfahren und Vorrichtungen zur Dateneinspiegelung
PCT/EP2016/052431 WO2016124713A2 (fr) 2015-02-05 2016-02-04 Procédé et dispositifs pour l'incrustation de données

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/052431 A-371-Of-International WO2016124713A2 (fr) 2015-02-05 2016-02-04 Procédé et dispositifs pour l'incrustation de données

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/993,535 Continuation US11977227B2 (en) 2015-02-05 2022-11-23 Methods and devices for data projection

Publications (1)

Publication Number Publication Date
US20180024361A1 true US20180024361A1 (en) 2018-01-25

Family

ID=55304996

Family Applications (2)

Application Number Title Priority Date Filing Date
US15/545,873 Abandoned US20180024361A1 (en) 2015-02-05 2016-02-04 Methods and devices for data projection
US17/993,535 Active US11977227B2 (en) 2015-02-05 2022-11-23 Methods and devices for data projection

Family Applications After (1)

Application Number Title Priority Date Filing Date
US17/993,535 Active US11977227B2 (en) 2015-02-05 2022-11-23 Methods and devices for data projection

Country Status (5)

Country Link
US (2) US20180024361A1 (fr)
EP (1) EP3254152A2 (fr)
CN (2) CN107209395A (fr)
DE (1) DE102015101687A1 (fr)
WO (1) WO2016124713A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020016799A (ja) * 2018-07-26 2020-01-30 コニカミノルタ株式会社 ヘッドアップディスプレイ装置
US10552708B2 (en) 2018-03-07 2020-02-04 Xerox Corporation Method and system for extracting impression marks using a mobile application
US10736501B2 (en) 2017-08-14 2020-08-11 Carl Zeiss Vision International Gmbh Apparatuses and methods for carrying out eye-related measurements
US10955673B2 (en) 2016-07-21 2021-03-23 Carl Zeiss Jena Gmbh Devices for data superimposition
US11237390B2 (en) * 2016-09-21 2022-02-01 Nec Corporation Display system
US11294178B1 (en) * 2021-08-30 2022-04-05 Luminit Llc Transparent holographic heads up display with in-plane image

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015116408A1 (de) * 2015-09-28 2017-03-30 Carl Zeiss Jena Gmbh Vorrichtung zur Datenprojektion
DE102016115938A1 (de) 2016-08-26 2018-03-01 Carl Zeiss Jena Gmbh Wellenleiter sowie Vorrichtungen zur Dateneinspiegelung
DE102017214592A1 (de) 2017-08-22 2019-02-28 Continental Automotive Gmbh Head-Up-Display
CN110658626A (zh) * 2018-06-29 2020-01-07 深圳市掌网科技股份有限公司 头戴显示设备
DE102018212735A1 (de) * 2018-07-31 2020-02-06 Robert Bosch Gmbh LIDAR-Vorrichtung mit mindestens einem Streuscheibenelement
DE102021105830A1 (de) 2021-03-10 2022-09-15 Carl Zeiss Jena Gmbh Wellenfrontmanipulator für Head-up-Display mit holographischem Element, optische Anordnung und Head-up-Display
DE102021209849A1 (de) 2021-09-07 2023-03-09 Robert Bosch Gesellschaft mit beschränkter Haftung Projektionsvorrichtung zur Anzeige von Informationen in einem Fahrzeug
DE102022105038A1 (de) 2022-03-03 2023-09-07 Carl Zeiss Jena Gmbh Wellenfrontmanipulator mit Totalreflexion und Reflexionshologramm
DE102022105039A1 (de) 2022-03-03 2023-09-07 Carl Zeiss Jena Gmbh Wellenfrontmanipulator für Head-up-Display mit holographischem Element zum Erzeugen einer gekippten virtuellen Bildebene

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790613A (en) * 1987-01-06 1988-12-13 Hughes Aircraft Company Holographic display panel for a vehicle windshield
US5112121A (en) * 1989-03-21 1992-05-12 Chang David B Display system for multiviewer training simulators
JP3151766B2 (ja) * 1992-07-31 2001-04-03 キヤノン株式会社 画像表示装置
CN100434967C (zh) * 2003-05-06 2008-11-19 皇家飞利浦电子股份有限公司 通过全息屏幕同时产生同一个图像的多个互相隔开的全息帧的投影装置
CN100410727C (zh) * 2004-03-29 2008-08-13 索尼株式会社 光学装置以及虚像显示装置
CN101226325B (zh) * 2008-02-03 2010-06-02 李志扬 基于随机相长干涉的三维显示方法及装置
JP5462443B2 (ja) * 2008-03-27 2014-04-02 株式会社東芝 反射スクリーン、表示装置及び移動体
RU2378673C1 (ru) * 2008-04-03 2010-01-10 Владимир Исфандеярович Аджалов Способ визуализации изображений и устройство для его реализации
DE102008039737A1 (de) * 2008-08-26 2010-04-01 G + B Pronova Gmbh Anzeigeeinrichtung, transparentes Abbildungselement sowie Verfahren zur Herstellung eines transparenten Abbildungselements
DE102011083662B4 (de) * 2011-09-29 2022-02-17 Robert Bosch Gmbh Anzeigevorrichtung für einen Insassen eines Fahrzeugs, Fahrzeug und Verfahren zur Generierung einer Anzeige in einem Sichtfeld des Insassen
GB2499579B (en) * 2012-02-07 2014-11-26 Two Trees Photonics Ltd Lighting device
US20150362734A1 (en) 2013-01-28 2015-12-17 Ecole Polytechnique Federale De Lausanne (Epfl) Transflective holographic film for head worn display

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10955673B2 (en) 2016-07-21 2021-03-23 Carl Zeiss Jena Gmbh Devices for data superimposition
US11237390B2 (en) * 2016-09-21 2022-02-01 Nec Corporation Display system
US10736501B2 (en) 2017-08-14 2020-08-11 Carl Zeiss Vision International Gmbh Apparatuses and methods for carrying out eye-related measurements
US10552708B2 (en) 2018-03-07 2020-02-04 Xerox Corporation Method and system for extracting impression marks using a mobile application
JP2020016799A (ja) * 2018-07-26 2020-01-30 コニカミノルタ株式会社 ヘッドアップディスプレイ装置
JP7049583B2 (ja) 2018-07-26 2022-04-07 コニカミノルタ株式会社 ヘッドアップディスプレイ装置
US11294178B1 (en) * 2021-08-30 2022-04-05 Luminit Llc Transparent holographic heads up display with in-plane image
WO2023034067A1 (fr) * 2021-08-30 2023-03-09 Luminit Llc Affichage tête haute holographique transparent avec image dans le plan

Also Published As

Publication number Publication date
CN107209395A (zh) 2017-09-26
EP3254152A2 (fr) 2017-12-13
WO2016124713A2 (fr) 2016-08-11
CN115145039A (zh) 2022-10-04
US20230168503A1 (en) 2023-06-01
WO2016124713A3 (fr) 2016-09-22
DE102015101687A1 (de) 2016-08-11
US11977227B2 (en) 2024-05-07

Similar Documents

Publication Publication Date Title
US11977227B2 (en) Methods and devices for data projection
US7777960B2 (en) Wide field of view head-up display system
US10732408B2 (en) Projection type display device and projection display method
WO2012042793A1 (fr) Dispositif d'affichage transparent et véhicule ayant un dispositif d'affichage transparent monté sur celui-ci
WO2015012138A1 (fr) Dispositif de projection de type à balayage
WO2016208379A1 (fr) Dispositif d'écran et dispositif d'affichage tête haute
US10955673B2 (en) Devices for data superimposition
JP7202191B2 (ja) 車両用情報表示システム
JP6498355B2 (ja) ヘッドアップディスプレイ装置
WO2018061444A1 (fr) Plaque de réflexion, dispositif d'affichage d'informations et corps mobile
JP2002508848A (ja) 飛行機および乗り物用ホログラフィック表示スクリーン
JP6451686B2 (ja) ヘッドアップディスプレイ装置
JP2022020704A (ja) 情報表示装置
WO2018225309A1 (fr) Dispositif d'affichage d'image virtuelle, unité de formation d'image intermédiaire et unité de génération de lumière d'affichage d'image
JP7195454B2 (ja) 光源装置、それを利用した情報表示システムおよびヘッドアップディスプレイ装置
CN116389697A (zh) 数据投影系统
JP4452613B2 (ja) ホログラフィック表示システム
WO2020261830A1 (fr) Dispositif d'affichage tête haute
US10642035B2 (en) Laser projection arrangement and process for the generation of virtual images
JP5333781B2 (ja) ヘッドアップディスプレイ装置
JP2018132734A (ja) ヘッドアップディスプレイ装置
JP6331839B2 (ja) ヘッドアップディスプレイ装置
JP7111070B2 (ja) ヘッドアップディスプレイ装置
US20220390743A1 (en) Ghost image free head-up display
JP5708951B2 (ja) ヘッドアップディスプレイ装置

Legal Events

Date Code Title Description
STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

AS Assignment

Owner name: CARL ZEISS JENA GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ERLER, CHRISTOPH;BURKHARDT, MATTHIAS;GATTO, ALEXANDRE;SIGNING DATES FROM 20171127 TO 20171201;REEL/FRAME:044327/0547

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION