WO2018135968A1 - Module de phare - Google Patents

Module de phare Download PDF

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Publication number
WO2018135968A1
WO2018135968A1 PCT/RU2017/000686 RU2017000686W WO2018135968A1 WO 2018135968 A1 WO2018135968 A1 WO 2018135968A1 RU 2017000686 W RU2017000686 W RU 2017000686W WO 2018135968 A1 WO2018135968 A1 WO 2018135968A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
light
light source
module according
focusing
Prior art date
Application number
PCT/RU2017/000686
Other languages
English (en)
Russian (ru)
Inventor
Александр Геннадьевич ТАРАНОВ
Original Assignee
Общество С Огранчиенной Ответственностью "Научно-Производственное Предприятие "Лосев"
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 Общество С Огранчиенной Ответственностью "Научно-Производственное Предприятие "Лосев" filed Critical Общество С Огранчиенной Ответственностью "Научно-Производственное Предприятие "Лосев"
Priority to RU2018140918A priority Critical patent/RU2720480C1/ru
Publication of WO2018135968A1 publication Critical patent/WO2018135968A1/fr

Links

Classifications

    • 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
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems

Definitions

  • the invention relates to lighting devices of head automotive optics and can be used to illuminate the road surface in the headlights of cars, both as primary and secondary lighting.
  • the disadvantages of the known design of the headlight include its complexity, large dimensions and high energy costs.
  • the module includes a reflector, a light source located between the reflector and the lens diopter element and is equipped with a stationary or movable shield and is provided with at least partially reflective coating.
  • the disadvantages include the low technological capabilities of the device, which consist in the low efficiency of surface illumination, since the light source is located in front of the reflector and obscures part of the reflection from the reflector light, which negatively affects the efficiency of the optical system.
  • the disadvantages include the complexity of the design and high manufacturing costs associated with the presence of a reflector, which requires a complex and costly modification of its surfaces, while due to the large size and weight it significantly reduces its use in the headlights of a car.
  • the disadvantages of the prototype include low technological capabilities, consisting in the lack of effectiveness of lighting the surface, and the complexity of the design, large size and weight significantly reduce use cases and increase manufacturing costs, since to create the primary light beam of the reflector, it is necessary to apply an expensive and short-lived metallized layer. So, in the known device, the light source obscures part of the light reflected from the reflector, which negatively affects the efficiency of the optical system.
  • the technical result of the proposed invention is to eliminate the disadvantages of the prototype, in particular increasing the technological capabilities of the headlamp module associated with providing higher optical efficiency and increasing the surface lighting efficiency, while reducing the size and weight while reducing the cost of its manufacture, which will expand the options for its use.
  • the technical result achieved is achieved by using a combination of well-known features common to the prototype, including a housing with a light source mounted in it, a beam conversion device and a luminous flux limiter, and new ones, namely
  • the beam conversion device is made at least in the form of two lenses - focusing collimator and collecting, between which is mounted the light flux limiter, the light source is installed in a cavity made on an axial line at the apex of the outer reflecting side of the focusing collimator lens, its outer surfaces towards the illuminated object are made concave, and the outer surface of the collecting lens directed toward the illuminated object is convex, formed in in the form of an aspherical surface or two surfaces with different radii smoothly joining each other.
  • the limiter is made adjustable in height, the upper face of which, forming the geometry of the light flux, is made in the form of a broken line located below the axial line of the light beam by an adjustable value "X", which ensures the formation of a light spot on the illuminated surface.
  • thermoplastic transparent plastic polycarbonate or polymethylmethacrylate, was used as the lens material.
  • the outer surface of the focusing collimator lens in the cavity from the side of the light source can be made in the form of a truncated cone, hemisphere or in the form of a cylinder, while its upper surface is made in the form of a part of the sphere convex towards the light source.
  • the light source mounted in the cavity of the focusing collimator lens is mounted on a radiator.
  • the light source is mounted on one optical axis with a focusing collimator and collecting lenses
  • the distance between the focusing lens and the screen is made equal to 1.0 - 2.0 of the focal length of the lens.
  • the collecting lens is made in thickness from 1/4 to 1/3 of the diameter of the lens, while its diameter is from 30 to 50 mm.
  • the beam conversion device is made in at least two lenses - a focusing collimator and a collecting lens, between which a light limiter is mounted, the light source is installed in a cavity made on an axial line at the apex of the outer reflecting side of the focusing collimator lenses, its outer surfaces towards the illuminated object are made concave, and the outer surface of the collecting lens, directed towards the illuminated object, is made on a convex formed into an aspheric surface or a smoothly mating with each other two surfaces with different radii.
  • the focusing collimator lens narrows the outgoing light flux to a light dome with a half brightness angle of less than 30 °, and, at the same time, fulfills the functions of the light guide and, at the same time, it creates a light spot in the center brighter than the rest, and the lateral parts of its outer surfaces direct the reflected part of the light, finally configuring the beam opening angle and reducing the loss of generated light lumen output (beam).
  • a narrow general beam will not give the necessary light distribution, but a wider one and the efficiency will drop sharply and the focusing lens will then become a large diameter, which will lead to an increase in size and complexity of the structure and its cost.
  • a light beam is formed which, in cross section, has the shape of a figure of the required geometry (according to UNECE Rule 1 12) - close to a rectangle or ellipse, which is best reflected in the amount of light that passes after the screen, the cut-off border and quality of lighting.
  • the installation of a light source in a cavity made on an axial line at the apex of the outer reflecting side of the focusing collimator lens allows to reduce light losses and increase the technological capabilities of the headlight module associated with providing higher optical efficiency and increasing the surface lighting efficiency, while reducing dimensions and weight at reducing the cost of its manufacture.
  • the execution of the outer surface of the collecting lens, directed toward the illuminated object, convex, formed in the form of aspherical surface or two surfaces smoothly joined together with different radii increases its aperture, while maintaining dimensions, allows more light to pass through it, allows you to direct and concentrate the light stream on the illuminated surface, which increases efficiency.
  • a lens with a small radius will have a too small aperture, the larger the radius (less curvature), the larger the aperture.
  • the focal length of the lens is directly proportional to the radius of the lens, i.e. the larger the radius of the lens, the greater the focal length.
  • a small focal length allows you to make the system compact with the same optical parameters of the entire system.
  • a small radius and, accordingly, diameter
  • the implementation of the outer surface of the focusing collimator lens in the cavity from the side of the light source in the form of a truncated cone, hemisphere or in the form of a cylinder, with its upper surface made as a part of the sphere convex towards the light source allows more “absorb” and focus the light and at the same time the light spots there is a central brighter circle, which allows to reduce the power of the light source, which leads to lower electricity consumption, lower radiator and lower cost of the product as a whole.
  • the main losses of light occur during passage through the medium, and each media boundary negatively affects the efficiency (air-lens, lens-air).
  • the light from the light source should initially enter the lens, and if there is a spherical part convex towards the light source, there will be less light loss when penetrating through the medium (water-lens).
  • the installation of a light source installed in the cavity of the focusing collimator lens on the radiator provides constant cooling and, accordingly, a long service life.
  • Performing the distance between the focusing collimator lens and the screen equal to 1.0 - 2.0 of the focal length of the lens allows you to maintain optimal lighting characteristics, without distortion, while maintaining high efficiency, because if there are more than two focal lengths, we will not get a picture of the light spot - we will get an imaginary image that becomes small - reduced. What is needed is a combination of the focal length of the lens, the distance at which the lens is from the screen and the distance from the lens to the illuminated place, then we get the optimal distance of the focusing lens from the screen: less than 2 or more than one focal length of the lens.
  • the execution of the collecting lens in thickness from 1/4 to 1/3 of the diameter of the lens, while its diameter is from 30 to 50 mm. It allows you to get a lens without breaking the crystal lattice, which increases the efficiency, since in a thick medium plastic freezes unevenly, with clots and light is lost in them. It is at the indicated permissible limits with a given lens thickness that the necessary beam opening is achieved without distortion, and if the lens is thick, it is impossible to produce it without breaking the crystal lattice, which leads to a distortion of the light spot and a decrease in optical efficiency, thus the thickness is more than 1/3 of the lens diameter , unjustified, since it leads to an increase in the consumption of materials, complication of manufacturing technology, appreciation and does not give more than positive effects have been achieved.
  • the thickness of the lens with a given diameter is less than 1/4, then it is not possible to achieve the desired geometry of the beam, since the incoming beam does not open at the minimum required 20 ° and the light spot is not formed correctly.
  • the signs of the performance of the limiter are height-adjustable, the upper face of which, forming the geometry of the light flux, is made in the form of a broken line located below the axial line of the light beam by an adjustable value “X”, which provides the formation of a light spot on the illuminated surface, using thermoplastic transparent as lens material plastic - polycarbonate or polymethyl methacrylate, mounting a light source on the same optical axis with a focusing collimator and collecting lenses - are recognized kami additional aimed at the disclosure of the main features and contributing to the achievement of the technical result, as well as the possibility of manufacturing more compact, lightweight and durable structures, simplicity and low cost of manufacturing structural components.
  • FIG. 1 schematically shows the proposed headlight module.
  • FIG. 2 schematically shows a light source mounted in a cavity: a) made in the form of a truncated cone, b) in the form of a cylinder
  • FIG. 3 schematically shows the screen
  • the headlight module consists of a housing 1 mounted on a radiator 2, on which a focusing collimator lens 3 is mounted in housing 1 with an LED 4 mounted in cavity 5 in the form of a hemisphere (in the form of a truncated cone 6, in the form of a cylinder 7) with its upper surface made in the form part of the sphere is convex towards the light source 8, made on an axial line at the apex of the outer reflecting surface 9 of the focusing collimator lens 3, the screen 10 and the collecting lens 1 1.
  • the LED 4 is mounted on the radiator 2 in the housing 1.
  • the screen is 10 cm It is tuned below the center line of the device by an amount of “x” at a distance from the focusing collimator lens equal to 1.0 - 2.0 of the focal length of the collecting lens to maintain optimal lighting characteristics, without distortion, while maintaining high efficiency that provides the specified surface lighting parameters, for example, the roads.
  • the outer surface 12 of the collecting lens 11 facing the illuminated surface is made in the form of two smoothly joined and different in curvature surfaces.
  • the reflecting outer surface 9 of the focusing collimator lens 3 as well as the outer surface 13 of the same lens facing the illuminated surface are made concave.
  • the focusing collimator lens 3 and the collecting lens 11 are made of thermoplastic transparent plastic - polycarbonate or polymethylmethacrylate.
  • the upper face 14 of the screen 10 mounted between the focusing collimator lens 3 and the collecting lens 11 is made in the form of a broken line spaced from the center line of the device by an adjustable amount of "C" depending on the required surface lighting conditions.
  • a focusing collimator lens 3 with a mounted light source - LED 4 in the cavity 5, made on the axial line at the top of the focusing collimator lens 3 and the collecting lens 11 in the design provides ease of manufacture, compact size and ease of construction, as well as low cost of manufacturing components of the structure, while providing higher optical efficiency.
  • the proposed device operates as follows:
  • LED 4 When voltage is applied to LED 4, it starts emitting light in the form of a dome with an angle of half brightness of 120 °.
  • This light enters the cavity 5 made in the form of a hemisphere, on the center line from the outer reflecting side 9 of the focusing collimator lens 3, while its upper surface 8, made as a part of the sphere convex towards the light source, “picks up” and focuses due to its shape more light than a flat surface, so the convex upper surface 8 of the cavity - the back sphere takes more light and forms a central brighter circle, reduces the power of the light source, which leads to lower consumption electricity, reducing the radiator and reducing the cost of the product as a whole.
  • the light is reflected from the outer reflecting surface 9 and propagates into the cavity of the focusing collimator lens 3, as in the optical fiber, and leaves it through the outer surface 13, while having a light dome with predetermined parameters and losses of less than 7% of the light flux.
  • Part of the transmitted beam hits the screen 10, whose upper face 14, made in the form of a broken line, defines the shape of the light spot emitted by the device.
  • no more than 20% of the luminous flux is cut off.
  • the resulting beam passes through the collecting lens 1 1 flips in two planes, exits through the outer surface 12 directed toward the illuminated object, and receives on the illuminated surface a clear shape of the light-shadow border.
  • the outer surface 12 increases the aperture of the lens while maintaining size, provides the passage of more light through it, allows you to direct and concentrate the flow light on the illuminated surface, which increases the efficiency. It is due to the large aperture with a relatively small diameter of the lens and a small thickness of the collecting lens (less than 1/3 of its diameter) that the optical loss is less than 5%. The result is a light beam of the required complex shape, with a clear light-shadow border, and a loss in beam formation of no more than 32%. Radiator 2 provides cooling of the LED 4 and its reliable long-term operation.
  • the technological capabilities of the headlamp module are increased, which are associated with providing higher optical efficiency and increasing the efficiency of surface illumination, while reducing dimensions and weight while reducing the cost of its manufacture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention se rapporte aux instruments d'éclairage de l'optique avant d'automobiles, et peut être utilisé pour éclairer la surface de la route dans des phares d'automobiles, et en qualité d'éclairage principal ou complémentaire. L'invention concerne un module de phare comprenant un corps dans lequel sont montés une source de lumière, un dispositif de conversion de faisceau et un limitateur de flux lumineux; le dispositif de conversion de faisceau se présente sous forme d'au moins deux lentilles, une de focalisation et collimation et une de concentration, entre lesquelles est monté le limitateur de flux lumineux; la source de lumière est disposée dans une cavité formée dans la ligne axiale au sommet du côté réfléchissant externe de la lentille de focalisation et de collimation, ses surfaces externes du côté de l'objet éclairé sont concaves et la surface externe recueillant de la lentille de concentration orientée vers le côté de l'objet éclairé est convexe et se présente comme une surface asphérique ou deux surfaces se rejoignant en douceur l'une à l'autre avec des rayons différents. A ce jour, un modèle expérimental du dispositif est développé en usine et est soumis à des tests expérimentaux en laboratoire. Les résultats préliminaires des essais sont positifs. Après la tenue d'essais complexes, une décision sera prise quant à la production desdits dispositifs.
PCT/RU2017/000686 2017-01-23 2017-09-21 Module de phare WO2018135968A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2018140918A RU2720480C1 (ru) 2017-01-23 2017-09-21 Модуль фары

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2017102076 2017-01-23
RU2017102076A RU2017102076A (ru) 2017-01-23 2017-01-23 Модуль фары

Publications (1)

Publication Number Publication Date
WO2018135968A1 true WO2018135968A1 (fr) 2018-07-26

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ID=62908285

Family Applications (1)

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PCT/RU2017/000686 WO2018135968A1 (fr) 2017-01-23 2017-09-21 Module de phare

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RU (2) RU2017102076A (fr)
WO (1) WO2018135968A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112013348A (zh) * 2019-05-29 2020-12-01 华域视觉科技(上海)有限公司 采用小开口厚壁聚焦器及柔性光导片的车灯光学系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109099330B (zh) * 2018-08-17 2023-08-18 江西科技师范大学 一种超远程led手电筒

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RU2094255C1 (ru) * 1994-11-23 1997-10-27 Акционерное общество "Завод Автосвет" Фара транспортного средства проектного типа
US20080030974A1 (en) * 2006-08-02 2008-02-07 Abu-Ageel Nayef M LED-Based Illumination System
US20120300469A1 (en) * 2009-12-21 2012-11-29 Martin Professional A/S Light Collector With Extended Center Lens
RU2475382C2 (ru) * 2008-10-30 2013-02-20 Фольксваген Аг Способ управления системой фар для транспортного средства и система фар для него
RU142299U1 (ru) * 2013-01-08 2014-06-27 Форд Глобал Технолоджис, ЛЛК Автомобильный модуль освещения
RU2597206C1 (ru) * 2012-07-19 2016-09-10 Валео Визьон Бельжик Устройство излучения светового пучка и фара, в частности, автотранспортного средства, содержащая указанное устройство

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RU2017178C1 (ru) * 1991-05-28 1994-07-30 Санкт-Петербургский институт точной механики и оптики Монохроматический объектив
US6547423B2 (en) * 2000-12-22 2003-04-15 Koninklijke Phillips Electronics N.V. LED collimation optics with improved performance and reduced size
JP5445963B2 (ja) * 2010-04-28 2014-03-19 国立大学法人 東京大学 光学素子及び撮像装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2094255C1 (ru) * 1994-11-23 1997-10-27 Акционерное общество "Завод Автосвет" Фара транспортного средства проектного типа
US20080030974A1 (en) * 2006-08-02 2008-02-07 Abu-Ageel Nayef M LED-Based Illumination System
RU2475382C2 (ru) * 2008-10-30 2013-02-20 Фольксваген Аг Способ управления системой фар для транспортного средства и система фар для него
US20120300469A1 (en) * 2009-12-21 2012-11-29 Martin Professional A/S Light Collector With Extended Center Lens
RU2597206C1 (ru) * 2012-07-19 2016-09-10 Валео Визьон Бельжик Устройство излучения светового пучка и фара, в частности, автотранспортного средства, содержащая указанное устройство
RU142299U1 (ru) * 2013-01-08 2014-06-27 Форд Глобал Технолоджис, ЛЛК Автомобильный модуль освещения

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112013348A (zh) * 2019-05-29 2020-12-01 华域视觉科技(上海)有限公司 采用小开口厚壁聚焦器及柔性光导片的车灯光学系统

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Publication number Publication date
RU2017102076A (ru) 2018-07-23
RU2720480C1 (ru) 2020-04-30
RU2017102076A3 (fr) 2018-07-23

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