GB2324364A - Light input device for a light pipe illuminator - Google Patents

Light input device for a light pipe illuminator Download PDF

Info

Publication number
GB2324364A
GB2324364A GB9707941A GB9707941A GB2324364A GB 2324364 A GB2324364 A GB 2324364A GB 9707941 A GB9707941 A GB 9707941A GB 9707941 A GB9707941 A GB 9707941A GB 2324364 A GB2324364 A GB 2324364A
Authority
GB
United Kingdom
Prior art keywords
light
lens
input device
light pipe
principal axis
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.)
Withdrawn
Application number
GB9707941A
Other versions
GB9707941D0 (en
Inventor
Joep Bijlholt
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.)
Ford Motor Co
Original Assignee
Ford Motor Co
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 Ford Motor Co filed Critical Ford Motor Co
Priority to GB9707941A priority Critical patent/GB2324364A/en
Publication of GB9707941D0 publication Critical patent/GB9707941D0/en
Publication of GB2324364A publication Critical patent/GB2324364A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0018—Redirecting means on the surface of the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G02B6/0048—Tapered light guide, e.g. wedge-shaped light guide with stepwise taper

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A light input device (1) for a light pipe illuminator (3) receives light from a point light source (5) of uncollimated light and produces substantially collimated light and collimated to a first feed direction for feeding to the illuminator (3). The input device (1) comprises a first convex lens (7) arranged such that its principal focus (9) lies substantially at the light source (5) such that rays of light (11 from the light source (5) after passing through the first lens (7) are substantially parallel to the principal axis (13) of the first lens (7) and an auxiliary light collecting device (15), extending from the periphery (17) of the first lens (7) and comprising a plurality of secondary convex lenses (19, 21), the principal focus of (23, 25) of each secondary lens (19, 21) substantially coinciding with the light source (5) and the principal axis (27,29) of each secondary lens (19, 21) lying at an angle to the principal axis (13) of the first lens (7), each secondary lens (19, 21) producing collimated light lying at an angle to the principal axis (13) of the first lens (7), and for each secondary lens (19, 21) a reflective surface (31, 33) which reflects light from the secondary lens to a direction substantially parallel to the first lens (7).

Description

LIGHT INPUT DEVICE FOR LIGHT PIPE ILLUMINATOR Field of the Invention The invention relates to an improved light input device for a light pipe illuminator of the type which receives light fed along the axis of the light pipe and illuminates an extended surface overlying the light pipe. The invention is applicable with particular advantage for inputting light from a light emitting diode.
In this specification the term "light pipe illuminator" will be used for a device which receives light fed along the axis of the light pipe and illuminates an extended surface overlying the light pipe.
Typically such a light pipe illuminator is used to back light liquid crystal displays, used in cars on dashboards and externally in headlights and tail lights.
The source for such a light pipe illuminator may comprise a conventional bulb and reflector system where the filament of a bulb is placed at or near a focal point of a parabolic reflector. The light emitted by the bulb filament is collected by the reflector and reflected outward to form a light beam. A lens is used to shape the light beam into a specified pattern to satisfy vehicle lighting standards regulations. Typically in such a system at least fifty per cent of the light emitted from the bulb filament is not reflected by the reflector system. One disadvantage of such a system is that the depth of the reflector along its focal axis and the height of the reflector in directions perpendicular to the focal axis greatly limit the possibilities of streamlining vehicle contour. Additionally the bulb gives off thermal energy during operation.
A number of prior art systems have been developed which utilise a light pipe which uses a small area source to evenly light a larger area where the light pipe is used for back lighting a liquid crystal display and has a planar front surface and a stair stepped or faceted back surface.
Typically the light pipe is generally of a wedge shape with the back surface arranged in steps to form facets so that light injected from the end of the light pipe reflects off the facets and through the front surface. Thus the light pipe reflects light through the front surface across its entire surface and back lights the whole liquid crystal display. Typically it is preferred that the light being fed into the light pipe is substantially collimated in a direction substantially parallel to the front surface of the light pipe. Problems arise in collecting light from a light source to feed into the light pipe without wasting a lot of the light energy. Attempts have been made to focus light from a variety of light sources. One example is described in US Patent 5 434 754 which discloses a manifold utilising light from a remote light source which includes the bi-focal parabolic reflector which collects and collimates light from the remote light source and transmits the light through a light guide to the bi-focal parabolic reflector.
Summary of the Invention According to the invention there is provided a light input device for a light pipe illuminator for receiving light from a point light source of uncollimated light and producing a substantially collimated light, collimated to a first feed direction for feeding to the illuminator, the input device comprising a first convex lens arranged such that its principal focus lies substantially at the light source such that rays of light from the light source after passing through the lens are substantially parallel to the principal axis of the first lens, and an auxiliary light collecting device, extending from the periphery of the first lens, and comprising a plurality of secondary convex lenses, the principal focus of each secondary lens substantially coinciding with the light source and the principal axis of each secondary lens lying at an angle to the principal axis of the first lens, each secondary lens producing collimated light at an angle to the principal axis of the first lens, and for each secondary lens, a reflective surface arranged such that collimated light having passed through the secondary lens is reflected to a direction substantially parallel to the principal axis of the first lens.
Thus the centre rays emitted by the light source hit the first lens and reflection causes them to become parallel within the light pipe. The rays hitting the lens at a large incidence angle would cause losses through reflection. Thus it is important that the lens size is limited to limit the angle of incidence to, for example, less than sixty degrees.
Light emitted from the light source at a greater angle of incidence pass through one of the secondary lenses and the light passing through each of the secondary lenses is again collimated but in a direction at an angle to the collimation direction of the first lens. The reflection means are arranged about the secondary lenses to reflect the collimated light to a direction parallel to the light extending from the secondary lens. The use of such a device means that the light source can be a light emitting diode.
Typically the light pipe is used in combination with a plurality of surface mounted light emitting diodes and the light pipe illuminator includes a plurality of light input devices in accordance with the invention.
Because the light emitting diode's intensity pattern is basically a three dimensional hat shape having a three dimensional intensity pattern the secondary lenses form a surrounding three dimensional aperture about the light emitting diode. Thus the reflector is preferably a truncated cone extending from the edge of each secondary lens remote from the first lens. The number of secondary lenses is chosen as a balance between collecting the light efficiently, and ease of manufacture. Typically the number is between 4 and 10, and preferably 6 to 8. Typically the first feed direction into which the light is collimated is not the direction of feed into the light pipe and the illuminator will include at least one further reflector to reflect the light into the multi-faceted light pipe. The light pipe may be used to illuminate a liquid crystal display or for back illumination of any flat panel display such as an instrument cluster.
The invention is applicable with particular advantage to any application within a vehicle since space is at a premium.
Brief Description of the Drawings An example of a light input device for a light pipe illuminator will now be described, by way of example only, with reference to the accompanying drawings, in which : Figure 1 is a schematic view of a light pipe illuminator; and Figure 2 is a section through one of the light input devices.
Description of the Preferred Embodiment A light input device 1 for a light pipe illuminator 3 receives light from a point light source 5 of uncollimated light and produces substantially collimated light and collimated to a first feed direction (A) for feeding to the illuminator 3. The input device 1 comprises a first convex lens 7 arranged such that its principal focus 9 lies substantially at the light source S such that rays of light 11 from the light source 5 after passing through the first lens 7 are substantially parallel to the principal axis 13 of the first lens 7 and an auxiliary light collecting device 15, extending from the periphery 17 of the first lens 7 and comprising a plurality of secondary convex lenses 19, 21, the principal focus of 23, 25 of each secondary lens 19, 21 substantially coinciding with the light source 5 and the principal axis 27, 29 of each secondary lens 19, 21 lying at an angle to the principal axis 13 of the first lens 7, each secondary lens 19, 21 producing collimated light lying at an angle to the principal axis 13 of the first lens 7, and for each secondary lens 19, 21 a reflective surface 31, 33 which reflects light from the secondary lens to a direction substantially parallel to the first lens 7.
Here the light pipe illuminator 3 comprises a wedge shaped light pipe 35 having a planar front surface 37 and a faceted rear surface 39. The light pipe 35 lies behind liquid crystal display 41 to be back lighted. The liquid crystal display is used to display information within the instrument panel of a vehicle (not shown).
The light pipe illuminator 3 also includes major feed reflector 43 which reflects light from the input device 1 all substantially collimated to a first feed direction (A) to a second axial direction along the light pipe 35.
The point light source 5 is a light emitting diode. The light emitting diode's intensity pattern is a three dimensional hat shape and has an intensity pattern which is the same in all planes perpendicular to its top surface and emits a first set of rays 11 which have an angle of incidence of less than sixty degrees with first lens 7 and pass through first lens 7 and a second set of rays 45 which have an angle of incidence of greater than sixty degrees which pass through the auxiliary light collecting device 15.
This ensures that losses through reflection are minimised but a large proportion of the light is retained.
In the drawings only two of the secondary convex lenses 19, 21 are illustrated but in this case the auxiliary light collecting device 15 comprises eight such secondary lenses arranged about the periphery 17 of the first lens 7 to form a surrounding three dimensional aperture. The reflective surface 31, 33 is part of a truncated cone which tapers towards the edge of the secondary lenses 19, 21 to form a smooth reflective surface.
It will be appreciated that the once the light has been collimated to one direction a series of reflectors could be used to change the direction of the light being fed into the light pipe.
The light emitting diode is a surface mounted diode. A series of light emitting diodes and input devices are used to illuminate a liquid crystal display of large area.

Claims (8)

Claims
1. Light input device for a light pipe illuminator for receiving light from a point light source of uncollimated light and producing a substantially collimated light, collimated to a first feed direction for feeding to the illuminator, the input device comprising a first convex lens arranged such that its principal focus lies substantially at the light source such that rays of light from the light source after passing through the lens are substantially parallel to the principal axis of the first lens, and an auxiliary light collecting device, extending from the periphery of the first lens, and comprising a plurality of secondary convex lenses, the principal focus of each secondary lens substantially coinciding with the light source and the principal axis of each secondary lens lying at an angle to the principal axis of the first lens, each secondary lens producing collimated light at an angle to the principal axis of the first lens, and for each secondary lens a reflective surface arranged such that collimated light having passed through the secondary lens is reflected to a direction substantially parallel to the principal axis of the first lens
2. A light pipe input device according to claim 1, in which, the number of secondary lenses is between 4 and 10.
3. A light pipe input device according to claim 2, in which the number of secondary lenses is between 6 and 8.
4. A light pipe input device according to any one of claims 1 to 3, in which the reflector comprises a truncated cone extending from the edge of each secondary lens remote from the first lens.
5. A light pipe illuminator including at least one light pipe input device according to any one of the preceding claims.
6. A light pipe illuminator including a plurality of light pipe input devices according to any one of claims 1 to 5.
7. A light pipe input device arranged substantially as described herein, with reference to, and as illustrated in figures 1 and 2 of the accompanying drawings.
8. A light pipe illuminator arranged substantially as described herein, with reference to, and as illustrated in figures 1 and 2 of the accompanying drawings.
GB9707941A 1997-04-19 1997-04-19 Light input device for a light pipe illuminator Withdrawn GB2324364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9707941A GB2324364A (en) 1997-04-19 1997-04-19 Light input device for a light pipe illuminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9707941A GB2324364A (en) 1997-04-19 1997-04-19 Light input device for a light pipe illuminator

Publications (2)

Publication Number Publication Date
GB9707941D0 GB9707941D0 (en) 1997-06-11
GB2324364A true GB2324364A (en) 1998-10-21

Family

ID=10811029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9707941A Withdrawn GB2324364A (en) 1997-04-19 1997-04-19 Light input device for a light pipe illuminator

Country Status (1)

Country Link
GB (1) GB2324364A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340215A (en) * 1998-07-30 2000-02-16 Integrated Syst Tech Ltd Scattering illumination light source
DE19943589A1 (en) * 1999-09-11 2001-04-05 Preh Elektro Feinmechanik Fiber optic
US6422718B1 (en) 1999-11-18 2002-07-23 Integrated Systems Technologies Limited Non-imaging light source for uniform illumination applications
DE10256179A1 (en) * 2002-12-02 2004-06-17 Siemens Ag lighting arrangement
WO2004090415A2 (en) * 2003-04-04 2004-10-21 CML INNOVATIVE TECHNOLOGIES Société par actions simplifiée Rear light, particularly a stop light for a motor vehicle
EP1291242A3 (en) * 2001-09-07 2006-08-30 Alps Electric Co., Ltd. Lighting device with light-condensing device
DE102005042523A1 (en) * 2005-05-31 2006-12-07 Osram Opto Semiconductors Gmbh lighting device
EP1826475A1 (en) * 2006-02-24 2007-08-29 Delphi Technologies, Inc. Flat lighting assembly with LED und light guide
US7435143B2 (en) 2004-05-10 2008-10-14 Cml Innovative Technologies Fixture for optoelectronic components such as PLCC2-type and PLCC4-type light emitting diodes
EP2019251A3 (en) * 2007-07-25 2009-05-13 Funai Electric Co., Ltd. Indicator light and television set
DE102007057399A1 (en) * 2007-11-27 2009-05-28 Hella Kgaa Hueck & Co. Lighting device for vehicles
EP2327340A1 (en) * 2009-11-25 2011-06-01 sam Schulte GmbH + Comp. Lamp and wall mirror with lamp
DE102011018508A1 (en) * 2011-04-23 2012-10-25 Automotive Lighting Reutlingen Gmbh Light guiding element arrangement for use in light module of motor vehicle lighting device, has collimator element, where injected light is considered higher in meridional section than in sagittal section by collimator element
DE102008001164B4 (en) * 2007-04-17 2015-01-15 Varroc Lighting Systems S.R.O lens assembly
EP2957827A1 (en) * 2014-06-18 2015-12-23 Hella KGaA Hueck & Co. Optical element, in particular for a street light, and street light with an optical element
US9435515B2 (en) 2014-01-31 2016-09-06 Energizer Brands, Llc Near-field lens with convex hyperbolic surface
EP1610158B1 (en) 2004-06-24 2017-02-22 Valeo Vision Light guide signaling device
EP3163157A1 (en) * 2015-08-07 2017-05-03 Valeo Lighting Hubei Technical Center Co Ltd Light guiding unit, light guiding device, and lighting and/or signal indicating device
CN109099390A (en) * 2016-06-29 2018-12-28 深圳市窗科技有限责任公司 One kind going out photosystem
DE102022209714A1 (en) 2022-09-15 2024-03-21 Continental Automotive Technologies GmbH Lighting device and display
EP2924346B1 (en) * 2014-03-25 2024-05-15 Regent Beleuchtungskörper AG Optics for a luminaire

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6987044B2 (en) * 2015-09-05 2021-12-22 レイア、インコーポレイテッドLeia Inc. Two-sided collimator and 3D electronic display with grid-based rear lighting using the collimator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740048A (en) * 1985-08-09 1988-04-26 Kei Mori Light radiator
GB2209422A (en) * 1987-09-03 1989-05-10 Emi Plc Thorn Displays
US5365412A (en) * 1993-01-07 1994-11-15 Ford Motor Company Low profile illuminator
US5639153A (en) * 1995-12-18 1997-06-17 Whelen Engineering Company, Inc. Light head assembly with remote light source

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740048A (en) * 1985-08-09 1988-04-26 Kei Mori Light radiator
GB2209422A (en) * 1987-09-03 1989-05-10 Emi Plc Thorn Displays
US5365412A (en) * 1993-01-07 1994-11-15 Ford Motor Company Low profile illuminator
US5639153A (en) * 1995-12-18 1997-06-17 Whelen Engineering Company, Inc. Light head assembly with remote light source

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340215B (en) * 1998-07-30 2002-05-01 Integrated Syst Tech Ltd Scattering illumination light source
GB2340215A (en) * 1998-07-30 2000-02-16 Integrated Syst Tech Ltd Scattering illumination light source
EP1083090A3 (en) * 1999-09-11 2006-03-08 Preh GmbH Light conductor with a mushroom form
DE19943589A1 (en) * 1999-09-11 2001-04-05 Preh Elektro Feinmechanik Fiber optic
US6422718B1 (en) 1999-11-18 2002-07-23 Integrated Systems Technologies Limited Non-imaging light source for uniform illumination applications
EP1291242A3 (en) * 2001-09-07 2006-08-30 Alps Electric Co., Ltd. Lighting device with light-condensing device
DE10256179A1 (en) * 2002-12-02 2004-06-17 Siemens Ag lighting arrangement
WO2004090415A3 (en) * 2003-04-04 2004-11-18 Sli Miniature Lighting Sa Rear light, particularly a stop light for a motor vehicle
CN1761837B (en) * 2003-04-04 2010-04-28 Cml创新技术公司 Rear light, particularly a stop light for a motor vehicle
WO2004090415A2 (en) * 2003-04-04 2004-10-21 CML INNOVATIVE TECHNOLOGIES Société par actions simplifiée Rear light, particularly a stop light for a motor vehicle
US7435143B2 (en) 2004-05-10 2008-10-14 Cml Innovative Technologies Fixture for optoelectronic components such as PLCC2-type and PLCC4-type light emitting diodes
EP1610158B1 (en) 2004-06-24 2017-02-22 Valeo Vision Light guide signaling device
DE102005042523A1 (en) * 2005-05-31 2006-12-07 Osram Opto Semiconductors Gmbh lighting device
EP1886173A1 (en) * 2005-05-31 2008-02-13 Osram Opto Semiconductors GmbH Illumination device
EP1826475A1 (en) * 2006-02-24 2007-08-29 Delphi Technologies, Inc. Flat lighting assembly with LED und light guide
DE102008001164B4 (en) * 2007-04-17 2015-01-15 Varroc Lighting Systems S.R.O lens assembly
US8049641B2 (en) 2007-07-25 2011-11-01 Funai Electric Co., Ltd. Indicator unit and television set
EP2019251A3 (en) * 2007-07-25 2009-05-13 Funai Electric Co., Ltd. Indicator light and television set
DE102007057399A1 (en) * 2007-11-27 2009-05-28 Hella Kgaa Hueck & Co. Lighting device for vehicles
US8042982B2 (en) 2007-11-27 2011-10-25 Hella Kgaa Hueck & Co. Headlight for a motor vehicle
EP2327340A1 (en) * 2009-11-25 2011-06-01 sam Schulte GmbH + Comp. Lamp and wall mirror with lamp
DE102011018508A1 (en) * 2011-04-23 2012-10-25 Automotive Lighting Reutlingen Gmbh Light guiding element arrangement for use in light module of motor vehicle lighting device, has collimator element, where injected light is considered higher in meridional section than in sagittal section by collimator element
DE102011018508C5 (en) * 2011-04-23 2016-06-30 Automotive Lighting Reutlingen Gmbh Optical fiber element arrangement and motor vehicle lighting device with such a light guide element arrangement
DE102011018508B4 (en) * 2011-04-23 2014-07-24 Automotive Lighting Reutlingen Gmbh Optical fiber element arrangement and motor vehicle lighting device with such a light guide element arrangement
US9435515B2 (en) 2014-01-31 2016-09-06 Energizer Brands, Llc Near-field lens with convex hyperbolic surface
EP2924346B1 (en) * 2014-03-25 2024-05-15 Regent Beleuchtungskörper AG Optics for a luminaire
EP2957827A1 (en) * 2014-06-18 2015-12-23 Hella KGaA Hueck & Co. Optical element, in particular for a street light, and street light with an optical element
EP3163157A1 (en) * 2015-08-07 2017-05-03 Valeo Lighting Hubei Technical Center Co Ltd Light guiding unit, light guiding device, and lighting and/or signal indicating device
US10042111B2 (en) 2015-08-07 2018-08-07 Valeo Lighting Hubei Technical Center Co., Ltd. Light guiding unit, light guiding device, and lighting and/or signal indicating device
CN109099390A (en) * 2016-06-29 2018-12-28 深圳市窗科技有限责任公司 One kind going out photosystem
DE102022209714A1 (en) 2022-09-15 2024-03-21 Continental Automotive Technologies GmbH Lighting device and display

Also Published As

Publication number Publication date
GB9707941D0 (en) 1997-06-11

Similar Documents

Publication Publication Date Title
GB2324364A (en) Light input device for a light pipe illuminator
US5434754A (en) Light manifold
US5365412A (en) Low profile illuminator
US5471371A (en) High efficiency illuminator
US5438485A (en) Illuminator for use with a remote light source
US7922369B2 (en) Complex optical lens apparatus for creating rectangular light output distribution
US9103517B2 (en) Vehicle light
US8469567B2 (en) Optical lens and vehicle lighting device using the same
US8920006B2 (en) Lighting or signaling device for a motor vehicle
US6036340A (en) Dimpled manifold optical element for a vehicle lighting system
US5700078A (en) Laser illuminated lighting system
JP3992296B2 (en) Illuminator
EP3021043B1 (en) Lighting apparatus and automobile having lighting apparatus mounted therein
US8562191B2 (en) Vehicle light
US6827475B2 (en) LED light collection and uniform transmission system
JP2000215710A (en) Multi-functional taillight device for vehicle
CN113039387B (en) Light module for a vehicle lighting device
US10139057B2 (en) Optical module for projecting a cutoff light beam including horizontally focusing means
CN107023796B (en) Collimating lens and optical module for automobile
JP2003505737A (en) Light collimation and distribution device
CN112752925B (en) Car light optical element, car light module, car head lamp and car
US6871990B2 (en) Vehicle lamp with visor
US4803608A (en) Rear lights for bicycles and other vehicles
JP2011249047A (en) Vehicular lighting fixture
EP1077346A2 (en) Signal lamp with LED light sources

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)