CN118110945A - Holographic lighting device for a vehicle - Google Patents

Holographic lighting device for a vehicle Download PDF

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Publication number
CN118110945A
CN118110945A CN202311515372.3A CN202311515372A CN118110945A CN 118110945 A CN118110945 A CN 118110945A CN 202311515372 A CN202311515372 A CN 202311515372A CN 118110945 A CN118110945 A CN 118110945A
Authority
CN
China
Prior art keywords
light
body section
holographic
hologram element
light source
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.)
Pending
Application number
CN202311515372.3A
Other languages
Chinese (zh)
Inventor
H·卡斯滕
M·阿尔方斯
M·马丁
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella GmbH and Co KGaA
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 Hella GmbH and Co KGaA filed Critical Hella GmbH and Co KGaA
Publication of CN118110945A publication Critical patent/CN118110945A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/30—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
    • B60Q1/302—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces mounted in the vicinity, e.g. in the middle, of a rear window
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/2605—Refractors
    • F21S43/2621—Refractors characterised by the properties of the light beam shaping surface
    • F21S43/26251—Holograms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2104/00—Exterior vehicle lighting devices for decorative purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

The invention relates to a holographic lighting device for a vehicle, comprising a light source (2) and a hologram element (3), which is illuminated by the light of the light source (2) to produce a holographic light sign, in particular a holographic logo, wherein the at least one light source (2) is arranged behind an outer skin (5) of a first body section (6) of a vehicle body (7), a lamp shade (10) is arranged in a recess of the first body section (6), and the hologram element (3) is arranged in the region of an outer skin (8) of a second body section (9), the outer skin (8) of the second body section (9) extending at an angle (phi) relative to the outer skin (5) of the first body section (6) in such a way that a light path portion (l 2) of the light extending between the light source (2) and the hologram element (3) outside the vehicle body (7) is greater than a light path portion (l 1) inside the vehicle body (7).

Description

Holographic lighting device for a vehicle
Technical Field
The invention relates to a holographic lighting device for a vehicle, comprising a light source and a hologram element, which is illuminated by the light of the light source to produce a holographic optical marking, in particular a holographic logo.
Background
A holographic illumination device is known from DE102016117685A1, which comprises a light source, a reflective element and a hologram element. The holographic lighting is integrally arranged in the tail light. The reflector has a plurality of rectangular or square prism faces on which light emitted by the light source is reflected in the direction of the hologram element. Since the light source and the reflecting element are provided on opposite sides of the rear lamp housing, a relatively large construction space is required.
A hologram lighting device having a light source and a hologram element, which is designed as a reflection hologram element, is known from DE102019124555 A1. The reflection hologram element occupies the total light exit surface of the tail lamp when projected in the light emission direction.
A holographic illumination device is known from DE102020131627A1, which has a light source, a light conductor and a hologram element. The light source is disposed behind a hologram element in a light emission direction, which is applied on a front surface side of the photoconductor. The light conductor has a reflective surface on the side opposite the light source, so that the light coupled into the light conductor can be deflected in the direction of the hologram element. The holographic lighting is preferably adapted for holographic display of logos, individual letters, etc.
Disclosure of Invention
The object of the invention is to provide a space-saving and efficient arrangement of a holographic lighting device in the rear region of a vehicle for producing holographic optical signs.
In order to solve this object, the invention is characterized in that the at least one light source is arranged behind the outer skin of the first body section of the body of the vehicle, a lamp shade is arranged in the recess of the first body section, and the hologram element is arranged in the region of the outer skin of the second body section, which outer skin extends at an angle to the outer skin of the first body section, such that the light path portion of the light extending between the light source and the hologram element outside the body of the vehicle is larger than the light path portion inside the body.
According to the invention, the hologram element and the other surface light source are arranged in different body sections of the vehicle. According to the invention, the light source is arranged in the first body section covered by the transparent lampshade, while the hologram element is arranged in the region of the outer skin of the second body section. The second body section forms an acute or obtuse angle with the first body section or the light-transmitting cover, so that the light path between the light source and the hologram element is greater outside the vehicle body than inside the vehicle body. The components of the holographic lighting device can thus be arranged in a space-saving manner, for example, in the region of the outer skin of the vehicle body.
According to one embodiment of the invention, the first body section and the second body section of the vehicle are arranged such that the portion of the beam path outside the housing represents at least 50%, preferably 70% to 90%, of the total beam path between the light source and the hologram element. Advantageously, the minimum beam path required for a correct display of the hologram element is transferred in this way substantially into a spatial section outside the vehicle body, which significantly reduces the space requirements of the components of the holographic lighting device within the vehicle body or within the region covered by the outer skin of the vehicle body.
According to a preferred embodiment of the invention, the first body section and the second body section enclose an acute angle with each other. In this way, a particularly large portion of the light emitted by the light source can be transferred into an area outside the vehicle body.
According to one embodiment of the invention, the surface of the first body section that receives the lamp shade is arranged in a protruding manner, wherein the hologram element in the second body section is arranged in a retracted or recessed manner compared to the surface of the first body section. Advantageously, in this way, the desired holographic optical marking can be produced in a space-saving manner by the hologram element.
According to one embodiment of the invention, at least the first body section is part of the luggage compartment cover, so that the protruding region of the luggage compartment cover can be used to accommodate the light source.
According to one embodiment of the invention, the hologram element is fastened in a disk-shaped receptacle which is arranged on the outside on the outer skin of the second body section or fastened to the outer skin. Advantageously, no perforation is required for the second body section.
In order to solve this object, the invention is characterized in that the light source and the hologram element are arranged in a common recess of the body section, a deflection element and a light conductor arranged in front of the deflection element in the light guiding direction are arranged between the light source and the hologram element, the hologram element being fixed on the front surface side of the light conductor.
A particular advantage of the invention is that the holographic lighting device is arranged behind the outer skin of the vehicle body in a relatively space-saving manner. Since only the light conductor is provided as a structurally large component, it is directly connected to the recess of the outer skin of the vehicle body. Only deflection elements are arranged in the light path between the light source and the light guide, preferably in the extension of the light guide, so that the depth of the structure of the holographic illumination device is relatively small. The light conductor is configured such that light from the deflection element continues to be conducted in the direction of the hologram element. Advantageously, the light guide is configured such that the hologram element can be arranged in a recess of the vehicle body outer skin in any oblique installation position (vehicle body direction). For example, vertically extending or standing logos can be produced therefrom as holographic optical markers.
According to one embodiment of the invention, the distance between the edge side of the hologram element and the light entrance surface of the light conductor is selected as a function of the maximum viewing angle. The larger the maximum viewing angle of the observer from the outside, the larger the spacing must be.
Further advantages of the invention result from the further dependent claims.
Drawings
Embodiments of the present invention are described in detail below with reference to the accompanying drawings. The drawings are as follows:
fig. 1 shows a schematic side view of a holographic illumination device according to a first embodiment of the invention;
Fig. 2 shows a side view of a further embodiment of a holographic lighting device, in which a hologram element is arranged on top (aufgesetzt) on the exterior skin of a vehicle body,
Fig. 3 shows a perspective rear view of a vehicle with holographic optical markers on the outer skin of a body section;
FIG. 4 shows another embodiment of a holographic illumination device;
FIG. 5 shows a schematic side view of a holographic illumination device partially integrated in a tail light;
FIG. 6 shows a side view of another embodiment of a holographic illumination device with a deflection element and a light conductor;
fig. 7 shows a front view of an arcuate body section with the holographic lighting device according to fig. 6 arranged in a recess of the body section in the closed state;
Fig. 8 shows a front view of the curved body section according to fig. 7 with the holographic lighting device according to fig. 6 in the on state.
Detailed Description
According to a first embodiment of the holographic lighting device 1, the holographic lighting device has a light source 2 and a hologram element 3, which is arranged to produce a predetermined holographic light sign, for example a logo, or in this example a word 4"forvia". As can be seen from fig. 1, the light source 2, which may be configured, for example, as an LED light source, is located behind the outer skin 5 of the first body section 6 of the vehicle body 7. The hologram element is located in the region of the outer skin 8 of the second body section 9 of the vehicle body 7, the outer skin 8 of the second body section 9 enclosing an angle with the outer skin 5 of the first body section 6In the present embodiment, the enclosed angle/>Is an acute angle, more precisely in the range between 40 ° and 50 °.
The hologram element 3 is configured as a reflection hologram element. The hologram element 3 is configured in planar or planar fashion and contains holographic information in the form of a diffraction grating or phase information of the light. As can be seen from fig. 3, the holographic image 4 produced by the hologram element 3 is arranged upright and thus protrudes from the surface of the hologram element 3.
As can be seen from fig. 1, the light path l between the light source 2 and the hologram element 3 extends mainly in the region outside the vehicle body 7. The light source 2 is preferably arranged directly behind the outer skin 5 of the first body section 6, wherein the recess of the first body section 6 is filled by a transparent lampshade 10. The lamp shade 10 is arranged flush with the surface of the outer skin 5 of the first body section 6. The light source 2 is arranged behind the lamp housing 10.
The light path l is composed of a first light path section l 1 and a second light path section l 2, the first light path section l 1 extending behind the vehicle body 7 and the second light path section l 2 extending in front of the vehicle body 7. In the present embodiment, the first light path portion l 1 extends behind the outer skin 5 of the first body section 6 and the second light path portion l 2 extends between the outer skin 5 of the first body section 6 and the outer skin 8 of the second body section 9.
According to the embodiment according to fig. 1, the hologram element 3 is connected to a transparent cover 11, which extends flush with the surface of the outer skin 8 of the second body section 9. The hologram element 3 is fastened together with the transparent cover 11 in a disk-shaped receptacle 12 which is connected to the second body section 9 on the rear side thereof.
It can be seen that the second light path portion l 2 outside the vehicle body 7 accounts for at least 50% of the total light path l, in the present embodiment in the range between 70% and 90%.
The intermediate light path l m is a part of the light beams emitted from the light source 2 towards the hologram element 3, wherein these light beams impinge on the middle and/or intermediate line of the hologram element 3. As can be seen from fig. 1, the second intermediate light path section l m2 outside the vehicle body 7 is at least 50% longer than the first intermediate light path section l m1 inside the vehicle body 7. The length of the second intermediate light path portion l m2 is preferably in the range between 80% and 95% of the length of the intermediate light path l m.
Thus, a majority l m2 of the intermediate light path l m extends outside the vehicle body 7.
The further embodiment of the invention shown in fig. 2 differs from the embodiment according to fig. 1 in that the receptacle 12 of the hologram element 3 is not fixed behind the second body section 9, but rather in front of the second body section.
Identical components or component functions are provided with identical reference numerals.
The receptacle 12 is preferably secured to the outer skin 8 of the second body section 9 in a material-locking manner.
The first body section 6 and the second body section 9 are integrally connected to each other. The first body section 6 and the second body section 9 are each arranged at an acute angle, preferably opposite to one another with respect to the horizontal plane.
According to a further embodiment of the invention according to fig. 4, the second body section 9 or the hologram element 3 can also extend upright. In the present embodiment the light source 2 is arranged below the hologram element 3 in a vertical direction, whereas according to the embodiment according to fig. 1 to 3 the light source is arranged substantially vertically above the hologram element 3.
The first body section 6 and the second body section 9 may be parts of a vehicle trunk lid, for example. In this case, the light source 2 is arranged in a protruding first body section 6, which is shaped to taper toward the edge (RANDKANTE) 6'.
According to a further embodiment of the invention according to fig. 5, the light source 2 is arranged integrally in the housing 13 of the taillight 14, more precisely behind the transparent cover 15 of the taillight 14. The underside of the housing 13 of the tail light 14 or of the lamp shade 15 forms here a first body section 6 which encloses an acute angle with the second body section 9The tail lamp 14 has a lamp module, not shown, including a light source and an optical unit for generating a predetermined signal lamp function, such as a tail lamp function, a brake lamp function, and/or a running direction indicator lamp function.
According to a further embodiment of the invention according to fig. 6 to 8, the holographic lighting device 1' has a deflection element 16 and a light conductor 17 in addition to the light source 2 and the hologram element 3. As in the above-described embodiment, the hologram element 3 is arranged behind the cover 11', which extends flush in the recess of the arcuately extending bodywork 7.
The hologram element 3 is arranged on the front surface side 18 of the light conductor 17. The deflection element 16 provided with a reflecting surface is arranged in the light guiding direction between the light entrance surface 20 of the light conductor 17 and the light source 2. The light source 2 is arranged behind the light guide 17 on the underside of the light guide 17 when projected in the light exit direction H, while the deflection element 16 is arranged on the opposite side of the light guide 17, more precisely above the light guide 17 in the present embodiment. The light guide 17 is configured such that the light 21 coupled in via the light entrance surface 20 impinges on the hologram element 3 without total reflection on the surface side of the light guide 17.
It can be seen that the light path l between the light source 2 and the deflection element 16 extends without optical components, i.e. in air. In the present embodiment, the deflection element 16 is arranged spaced apart from the light guide 17. Thus, the light guiding inside the light guide 17 can be influenced by the shaping of the deflecting element 16 and the light entrance face 20.
The vertical distance a between the edge side 22 of the hologram element 3 and the lower edge 23 of the light entrance surface 20 depends on the maximum viewing angle β at which the observer views the hologram element 3 from the outside. The larger the maximum viewing angle β, the larger the spacing a must be. This ensures that the observer does not perceive the illuminated edges or surfaces of the light conductor 17.
The light conductor 17 is in this embodiment constructed as a light-guiding plate with opposite large-area surface sides 24 and narrow sides 25 connecting said surface sides.
Even in the tilted installation position of the hologram element 3, a standing holographic image 4 can be produced in the on-state by correspondingly introducing a holographic information/diffraction grating into the hologram element 3, which in the present embodiment is configured as a transmissive hologram element. The holographic image 4 follows the rotation in perspective for the observer, since it does not lie in the plane of the hologram element 3. This is illustrated by the lateral viewing direction according to fig. 8.
According to an alternative embodiment, instead of a white light-emitting LED, an RGB LED or a plurality of light-emitting diodes, which emit light of different colors, can be provided as the light source, so that holograms of different colors can be produced. For example, the logos may have a red or blue or yellow color, or the constituent parts of the logos or the individual letters may have different colors.
List of reference numerals
1. 1' Holographic lighting device
2. Light source
3. Hologram element
4. Word mark
5. Outer skin
6. First body section
7. Vehicle body
8. Outer skin
9. Second body section
10. Lampshade
11. 11' Cover
12. Housing part
13. Shell body
14. Taillight
15. Lampshade
16. Deflection element
17. Light conductor
18. Front surface side
20. Light incidence plane
21. Light source
22. Edge side
23. Edge of edge
24. Surface side
25. Narrow side
Angle of
Beta viewing angle
A spacing
L light path
L m intermediate light path l 1、l2 light path portion
L m1、lm2 first and second intermediate optical paths

Claims (14)

1. Holographic lighting device for a vehicle, with a light source (2) and a hologram element (3) which is illuminated by light from the light source (2) to produce a holographic optical marking, in particular a holographic logo, characterized in that the at least one light source (2) is arranged behind an outer skin (5) of a first body section (6) of a vehicle body (7), a lamp shade (10) is arranged in a recess of the first body section (6), and the hologram element (3) is arranged in the region of an outer skin (8) of a second body section (9), the outer skin (8) of the second body section (9) extending at an angle (phi) relative to the outer skin (5) of the first body section (6) such that an optical path portion (l 2) of light extending between the light source (2) and the hologram element (3) outside the body (7) of the vehicle is greater than an optical path portion (l 1) inside the body (7).
2. Holographic lighting device according to claim 1, characterized in that the outer skin (8) of the second body section (9) extends at an acute angle (Φ) relative to the outer skin (5) of the first body section (6).
3. Holographic lighting device according to claim 1 or 2, characterized in that the first body section (6) and the second body section (9) are integrally connected to each other, the surface of the first body section (6) receiving the lamp shade (10) being arranged protruding.
4. A holographic lighting device as claimed in any of claims 1 to 3, in which the first body section (6) and the second body section (9) are part of a trunk lid.
5. Holographic lighting device according to any of claims 1 to 4, in which a first light path portion (l 1) within the vehicle body (7) extends between the light source (2) and the lamp shade (10) and a second light path portion (l 2) outside the vehicle body (7) extends between the lamp shade (10) of the first vehicle body section (6) and the hologram element (3) provided on the second vehicle body section (9) itself.
6. Holographic lighting device according to any of claims 1 to 5, wherein the light path portion (l 2) outside the vehicle body (7) occupies at least 50%, preferably in the range between 70% and 90% of the length of the light path (l) extending between the light source (2) and the hologram element (3).
7. Holographic lighting device according to any of claims 1 to 6, wherein the intermediate light path portion (l m2) outside the vehicle body (7) occupies at least 50%, preferably in the range between 80% and 95% of the length of the intermediate light path (l m) extending between the light source (2) and the hologram element (3), and the light beam extending along the intermediate light path portion (l m) impinges on the intermediate and/or intermediate line of the hologram element (3).
8. Holographic lighting device according to any of claims 1 to 7, characterized in that the hologram element (3) is configured as a reflection hologram element.
9. Holographic lighting device according to any of claims 1 to 8, characterized in that the holographic element (3) is arranged on a side of a cover (11) which is arranged surface-flush in a recess of the second body section (9) facing away from the first body section (6).
10. Holographic lighting device according to any of claims 1 to 8, in which the holographic element (3) is fixed together with a transparent cover (11) in a disc-shaped receptacle (12) which is fixed outside the vehicle body (7) on the outer skin (8) of the second vehicle body section (9).
11. Holographic lighting device according to any of claims 1 to 10, wherein the outer skin (5) of the first body section (6) is formed by a part of a tail light (14) housing or a part of a tail light (14) lamp envelope (15), wherein the light source (2) is arranged within the tail light (14).
12. Holographic lighting device for a vehicle, with a light source (2) and a hologram element (3), in particular according to claim 1, characterized in that the light source (2) and the hologram element (3) are arranged in a common recess of a body section, a deflection element (16) and a light conductor (17) arranged in front of the deflection element (16) in the light guiding direction are arranged between the light source (2) and the hologram element (3), the hologram element (3) being fixed on a front surface side (18) of the light conductor.
13. Holographic lighting device according to claim 12, characterized in that between the deflection element (16) and the light source (2) there is only an optical path (i) in air.
14. Holographic lighting device according to claim 12 or 13, characterized in that the vertical distance (a) between the edge side (22) of the holographic element (3) and the edge (23) of the light entrance surface (20) of the light guide body (17) is dependent on the maximum viewing angle (β) of the observer outside the vehicle body (7).
CN202311515372.3A 2022-11-29 2023-11-15 Holographic lighting device for a vehicle Pending CN118110945A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022131471.5A DE102022131471A1 (en) 2022-11-29 2022-11-29 Holographic lighting device for vehicles
DE102022131471.5 2022-11-29

Publications (1)

Publication Number Publication Date
CN118110945A true CN118110945A (en) 2024-05-31

Family

ID=91026602

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311515372.3A Pending CN118110945A (en) 2022-11-29 2023-11-15 Holographic lighting device for a vehicle

Country Status (2)

Country Link
CN (1) CN118110945A (en)
DE (1) DE102022131471A1 (en)

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