KR20180121261A - Head led lamp for vehicle with lcd - Google Patents

Head led lamp for vehicle with lcd Download PDF

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Publication number
KR20180121261A
KR20180121261A KR1020170055744A KR20170055744A KR20180121261A KR 20180121261 A KR20180121261 A KR 20180121261A KR 1020170055744 A KR1020170055744 A KR 1020170055744A KR 20170055744 A KR20170055744 A KR 20170055744A KR 20180121261 A KR20180121261 A KR 20180121261A
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South Korea
Prior art keywords
light
led
light source
vehicle
headlamp
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KR1020170055744A
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Korean (ko)
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김진희
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주식회사 에이엠에스
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Priority to KR1020170055744A priority Critical patent/KR20180121261A/en
Publication of KR20180121261A publication Critical patent/KR20180121261A/en

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    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • 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
    • 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
    • F21S41/25—Projection lenses
    • 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
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
    • F21S41/645—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • 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
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • 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)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

An automotive LED headlamp of the present invention comprises: an LED light source unit (10) having an LED chip (12) and emitting a light source; a transmissive LCD (20) receiving a light emission pattern generated by a signal sensed by a camera sensor installed in an automobile, and transmitting light of the LED light source unit (10) in a predetermined pattern, thereby forming a shade unit so that the light of the headlamp does not shine on the automobile or person facing the front; and a lens unit (30) for reflecting the light emitted from the transmissive LCD (20) toward the front of the automobile. Accordingly, in order to finely turn ON / OFF the front of the LED headlamp for the automobile, a plurality of LEDs are not provided for each zone, and a pattern of the shade unit and a light emission unit is generated through a position sensed by the camera sensor, so as to illuminate forward. Therefore, even if a small number of LEDs are installed, it is possible to control a minute angle.

Description

투과형 ＬＣＤ를 이용한 자동차용 ＬＥＤ 헤드램프{HEAD LED LAMP FOR VEHICLE WITH LCD}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a headlamp,

본 발명은 자동차용 헤드램프에 관한 것으로, 야간운행시 차량이나 사람의 위치를 세분화하여 미세한 온/오프동작이 가능하도록 하는 자동차용 LED 헤드램프에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlamp for an automobile, and more particularly, to an LED headlamp for an automobile, which enables a minute on / off operation by subdividing the position of a vehicle or a person at night.

최근 들어 다수의 LED를 설치한 LED Matrix 형태의 자동차용 헤드램프들이 출시되고 있다.In recent years, automotive headlamps of the LED matrix type, in which a large number of LEDs are installed, are being released.

이러한 헤드램프들은 대향하는 차량이나 사람의 위치를 확인한 후 해당 위치로 비추는 LED를 OFF시켜 운전자나 행인의 눈부심을 줄이도록 하는 ADB(Adaptive Driving Beam) 시스템을 갖추고 있다.These headlamps are equipped with an ADB (Adaptive Driving Beam) system that reduces the glare of drivers and passengers by turning off the LEDs illuminating the corresponding positions after confirming the position of the opposed vehicle or person.

ADB 시스템은 헤드램프에 의해 특정 위치(예를 들면 대향하는 차량이나 사람의 위치)에 비치는 빛을 OFF시켜 운전자의 시야는 확보하면서도 상대방 운전자의 눈부심을 주지 않도록 한다.The ADB system turns off the light to a specific position (for example, a facing vehicle or a person's position) by the headlamp so as to ensure the visibility of the driver while preventing the opponent driver from glare.

ADB 헤드램프는 대향 차량 또는 선행 차량이 감지되는 경우 스위블 액츄에이터에 의해 램프 각도를 변경시킴으로써, 대향 차량 또는 선행 차량이 위치하는 공간에 암영대(Dark zone)가 형성되도록 하는 다이내믹 타입(Dynamic type)의 헤드 램프와, 복수의 광원들을 선택적으로 점등 또는 소등시킴으로써, 대향 차량 또는 선행차량이 위치하는 공간에 암영대가 형성되도록 하는 매트릭스 타입(Matrix type)의 헤드램프로 구분된다The ADB headlamp is a dynamic type of dynamic type which allows a dark zone to be formed in the space where the opposite vehicle or the preceding vehicle is located by changing the angle of the ramp by the swivel actuator when the opposite vehicle or the preceding vehicle is detected A head lamp and a matrix type of head lamp that selectively illuminates or extinguishes a plurality of light sources to form a dark zone in the space where the facing vehicle or the preceding vehicle is located

이중에서 매트릭스 타입의 헤드램프는 다수의 LED 칩을 설치하여 선택적으로 ON/OFF 시킴으로써 눈부심을 방지하는 기술로 공개특허번호 제10-2017-0024832호, '차량용 적응형 헤드 램프' 이외에 다수 게시되어 있다.Of these, a matrix type headlamp is a technology for preventing glare by selectively turning on / off a plurality of LED chips, and a number of such headlamps have been disclosed in addition to 'adaptive headlamp for vehicle' as disclosed in Korean Patent No. 10-2017-0024832 .

다수의 LED 칩을 설치한 종래의 헤드램프는 야간 운행시 대향하는 물체가 감지되지 않으면 모든 LED를 ON시켜 주행하고, 전방에 차량이 다가오거나 사람이 위치하는 경우 이를 감지하여 해당 위치로 빛을 비추는 LED를 OFF시키거나 눈부심을 줄이게 된다.Conventional headlamps equipped with a plurality of LED chips are used to turn on all the LEDs when objects opposed to each other are not detected during nighttime operation. When a vehicle approaches the front or a person is present, Turn off the LED or reduce glare.

이는 다수의 LED가 설치된 상태에서 각각의 LED가 독립구동하도록 작동하여 해당하는 구역의 LED가 ON/OFF되도록 제어하는 것이다.This means that each LED is operated independently in a state where a plurality of LEDs are installed, thereby controlling ON / OFF of LEDs in the corresponding area.

하지만, 감지된 구역만을 정밀하게 암영대로 형성하기 위해서는 헤드램프의 조사각도를 더욱 세분화하여 차량이나 사람을 정밀하게 구분하여야 하며 이를 위해서는 산술적으로 더 많은 LED를 설치하여야 하는 것이며, 이러한 물리적인 LED 개수의 증가로 인한 세분화는 헤드램프의 크기가 커지는 등 그 설계에 있어서 한계가 있는 것이므로 이에 대한 개발이 요구되고 있다.However, in order to precisely define the detected area only, it is necessary to finely divide the irradiation angle of the headlamp so as to precisely distinguish the vehicle or the person. To this end, it is necessary to arrange more LEDs arithmetically. There is a limit to the design of the headlamp such that the size of the headlamp increases.

공개특허번호 제10-2017-0024832호, '차량용 적응형 헤드 램프'Open No. 10-2017-0024832, 'Adaptive headlamp for vehicle' 공개특허번호 제10-2011-0072381호, '헤드램프장치'Open No. 10-2011-0072381, " Head Lamp Device "

따라서 본 발명의 목적은 대향하는 차량이나 사람을 더욱 세분화하여 구분하여 헤드램프의 빛을 ON/OFF 하기 위한 투과형 LCD를 이용한 자동차용 LED 헤드램프를 제공하는데에 있다.SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an LED headlamp for automobiles using a transmissive LCD for turning on / off headlamps by further dividing a vehicle or a person.

상기의 목적에 따른 본 발명은 자동차용 LED 헤드램프에 있어서, LED 칩(12)이 설치되어 광원을 발산하는 LED 광원부(10)와, 자동차에 설치된 카메라센서에 의해 감지된 신호로 생성된 발광패턴을 전송받아 설정된 패턴으로 LED 광원부(10)의 빛이 투과되도록 하여 전방의 대향하는 차량이나 사람에게 헤드램프의 빛이 비치지 않도록 음영부를 형성하는 투과형 LCD(20)와, 상기 투과형 LCD(20)에 의한 빛을 자동차의 전방으로 비춰주는 렌즈부(30)로 구성되는 것을 특징으로 한다.According to an aspect of the present invention, there is provided an LED headlamp for an automobile, the LED headlamp comprising: an LED light source unit (10) having an LED chip (12) and emitting a light source; A transmissive LCD 20 for transmitting light from the LED light source 10 in a predetermined pattern so as to form a shade so that light from the headlamp is not transmitted to a vehicle or a person facing the front of the transmissive LCD 20, And a lens unit (30) for reflecting the light by the front of the vehicle.

또한, 본 발명의 LED 광원부(10)는 LED 칩(12)에 의해 발광하는 빛이 직진상으로 보내질 수 있도록 하는 빔성형렌즈(14)와, 광원의 빛을 모아서 전방의 투과형 LCD(20)로 균일하게 반사시키기 위한 자유곡면렌즈(16)를 포함하여 구성되는 것을 특징으로 한다.In addition, the LED light source unit 10 of the present invention includes a beam shaping lens 14 for allowing light emitted by the LED chip 12 to be sent in a straight line, and a beam shaping lens 14 for collecting light of the light source, And a free-form surface lens 16 for uniformly reflecting light.

또한, 본 발명은 투과형 LCD(20)를 통과한 빛을 집중시켜 헤드램프의 조사방향으로 전달하기 위한 양면 자유곡면렌즈(32)를 포함하여 구성되는 것을 특징으로 한다.The present invention is also characterized in that it comprises a double-sided free-form surface lens 32 for concentrating light passing through the transmissive LCD 20 and transmitting it in the direction of irradiation of the head lamp.

또한, 본 발명의 렌즈부(30)는 출사되는 빛을 회절 및 굴절시켜 집광함과 함께 색보정이 가능하도록 하는 회절광학소자(34)를 포함하여 구성되는 것을 특징으로 한다.Further, the lens unit 30 of the present invention is characterized in that it includes a diffractive optical element 34 for condensing light by diffracting and refracting the light to enable color correction.

본 발명에서는 자동차용 LED 헤드램프의 전방을 세분화하여 미세한 ON/OFF를 구현하기 위해 구역별로 다수의 LED를 설치하지 않고, 카메라 센서에 의해 감지된 위치를 통해 음영부와 발광부의 패턴을 생성하여 이를 LCD에 투과시켜 전방으로 비춤으로써 적은 수의 LED를 설치하고도 미세한 각도의 제어가 가능한 효과가 있는 것이다.In the present invention, in order to finely turn ON / OFF the front of the LED headlamp for an automobile, a plurality of LEDs are not provided for each zone, but a pattern of a shade portion and a light emitting portion is generated through a position sensed by a camera sensor, The LED is transmitted through the LCD to be forwardly focused, so that even if a small number of LEDs are provided, fine angle control is possible.

도 1은 본 발명의 실시 예에 따른 자동차용 LED 헤드램프의 구성을 설명하는 도면이고,
도 2는 도 1의 구성을 설명하는 개략도이고,
도 3은 본 발명의 실시 예에 따른 자동차용 LED 헤드램프의 실시 예를 보여주는 도면이다.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a configuration of an automotive LED headlamp according to an embodiment of the present invention,
Fig. 2 is a schematic view for explaining the configuration of Fig. 1,
3 is a view showing an embodiment of an automotive LED headlamp according to an embodiment of the present invention.

아래에서는 첨부한 도면을 참조하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며, 여기에서 설명하는 실시예에 한정되지 않는다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 붙였다.In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

명세서 전체에서, 어떤 부분이 어떤 구성요소를 포함한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제한하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.Throughout the specification, when a section includes a constituent element, it is understood that the same shall not be construed as limiting the other constituent elements unless specifically stated otherwise.

이하 첨부한 도면을 참조하여 본 발명의 바람직한 실시 예를 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 실시 예에 따른 투과형 LCD가 설치된 자동차용 LED 헤드램프의 구성을 설명하는 도면이고, 도 2는 이의 상세구성도이며, 도 3은 본 발명의 실시 예에 따른 자동차용 LED 헤드램프의 실시 예를 보여주는 도면이다.FIG. 1 is a view for explaining a configuration of an automotive LED headlamp equipped with a transmissive LCD according to an embodiment of the present invention, FIG. 2 is a detailed configuration diagram thereof, and FIG. 3 is a cross- Fig. 7 is a view showing an embodiment of a lamp. Fig.

본 발명의 자동차용 LED 헤드램프는 LED 칩(12)이 설치되어 광원을 발산하는 LED 광원부(10)와, 카메라센서에 의해 감지된 신호에 의해 생성된 음영부와 발광부 패턴을 전송받아 설정된 패턴으로 LED 광원부(10)의 빛이 투과되도록 하여 전방의 물체에 빛이 비치지 않도록 하는 투과형 LCD(20)와, 상기 투과형 LCD(20)에 의한 빛을 자동차의 전방으로 비춰주는 렌즈부(30)로 구성되다.An LED head lamp for an automobile according to the present invention includes an LED light source part (10) provided with an LED chip (12) and emitting a light source, a pattern formed by receiving a shade part and a light emitting part pattern generated by a signal sensed by a camera sensor A transmissive LCD 20 for allowing light from the LED light source 10 to pass through and preventing light from being transmitted to an object ahead, and a lens unit 30 for reflecting light emitted from the transmissive LCD 20 toward the front of the vehicle consist of.

상기 LED 광원부(10)는 LED 칩(12)에 의해 발광하는 빛이 직진상으로 보내질 수 있도록 하는 빔성형렌즈(14)와, 광원의 빛을 모아서 전방의 투과형 LCD(20)로 균일하게 반사시키기 위한 자유곡면렌즈(16)를 포함할 수 있다. The LED light source unit 10 includes a beam shaping lens 14 for allowing the light emitted by the LED chip 12 to be sent in a straight line and a light source for collecting the light of the light source and uniformly reflecting the light from the light source to the forward transmissive LCD 20. [ And a free-form surface lens 16 for reflecting the light.

상기 자유곡면렌즈(16)를 통해 전방으로 반사되는 빛의 일부는 전방으로 비춰지지 않도록 작동하며, 그 위치는 대향하는 차량이나 사람이 위치한 곳일 수 있다.A part of the light reflected forward through the free-form surface lens 16 is operated so as not to be shaded forward, and its position may be the position where the opposed vehicle or the person is located.

본 발명에서는 ADB기능을 갖는 자동차용 LED 헤드램프를 제어함에 있어 자동차의 전방을 세분화하여 미세한 ON/OFF를 제어하기 위해 세분화된 각도 만큼의 LED 칩(12)을 설치하는 것이 아니라 자동차의 전방에 설치된 카메라 센서에 의해 대향하는 차량이나 사람의 위치인 거리와 각도를 감지하고 헤드램프에 의한 빛의 조사방향 중에서 빛이 비춰지지 않도록 제어해야 하는 음영부 패턴을 생성하게 된다.In the present invention, in controlling an LED head lamp for an automobile having an ADB function, it is not necessary to install as many LED chips 12 as the subdivided angle in order to finely control the ON / OFF of the front of the vehicle, The camera sensor detects the distance and the angle of the vehicle or person facing the vehicle and generates a shade sub-pattern that should be controlled so that the light is not reflected in the light irradiation direction by the head lamp.

즉, 카메라 센서에 의해 빛이 비춰지는 발광부와, 비춰지지 않는 음영부를 구분하여 발광패턴을 생성하는 것이다. That is, the light emitting unit is divided into a light emitting unit that emits light by the camera sensor and a non-illuminated shading unit, thereby generating a light emission pattern.

상기 발광패턴에 의해 빛이 투과되는 투과형 LCD(20)의 전후단에는 편광판(22a)(22b)이 설치되어 빛이 투과되며, 빛의 투과시 발광패턴에 의해 발광부와 음영부로 구분되어 전방으로 빛이 전달된다.The polarizing plates 22a and 22b are provided at the front and rear ends of the transmissive LCD 20 through which the light is transmitted by the light emitting pattern. Light is transmitted through the polarizing plates 22a and 22b. Light is transmitted.

LED 광원으로부터 출사된 빛이 투과형 LCD(20)를 투과하면서 발광부와 음영부로 형성되는 발광패턴에 맞게 헤드램프를 통해 전방으로 조사되어 대향하는 차량의 운전자가 통행하는 행인의 눈부심을 주지 않게 되는 것이다.The light emitted from the LED light source is irradiated forward through the head lamp in accordance with the light emission pattern formed by the light emitting portion and the shade portion while transmitting through the transmissive LCD 20 so that the driver of the opposite vehicle does not give a glare to pass by .

투과형 LCD(20)를 통과한 빛은 양면 자유곡면렌즈(32)를 통해 다시 한번 모여져 균일하게 헤드램프의 조사방향인 전방으로 전달된다.The light passing through the transmissive LCD 20 is gathered once again through the double-sided free-form surface lens 32 and is uniformly transmitted to the front side in the irradiation direction of the head lamp.

본 발명에서는 출사되는 빛을 회절 및 굴절시켜 집광함과 함께 색보정이 가능하도록 하는 회절광학소자(34)를 렌즈부(30)에 포함하여 구성할 수 있다.In the present invention, the lens unit 30 may include a diffractive optical element 34 for condensing light by diffracting and refracting the light to enable color correction.

상기 회절광학소자(34)(DOE, Diffractive Optical Element)는 수 마이크로미터의 두께를 갖는 박형의 비구면 렌즈로서 구면렌즈의 복수개 이상 성능을 단매로도 달성할 수 있으며 그에 따라 소형화, 박형화가 가능한 것이다.The diffractive optical element 34 (DOE, Diffractive Optical Element) is a thin aspheric lens having a thickness of a few micrometers, and can achieve a plurality of spherical lenses with a single or a plurality of spherical lenses, thereby achieving miniaturization and thinning.

회절광학소자(34)를 통과한 빛은 렌즈부(30)의 최후단에는 빛을 모아 전방으로 비추기 위한 자유곡면렌즈(36)를 설치하며, 그와 함께 색분산방지 미세패턴(38)을 형성할 수 있다.The light having passed through the diffractive optical element 34 is provided with a free-form surface lens 36 for collecting the light and focusing the light forward at the rear end of the lens unit 30 and forming a color dispersion- can do.

상기 색분산방지 미세패턴(38)은 소재에 의해 청색광이 분리된 것을 확산시켜 청색이 뚜렷하게 보이는 것을 막고 빛을 분산시켜서 청색이 확산되도록 하고 나머지는 그대로 유지되게 하여 선명한 픽셀의 띠를 엷게 만드는 기능을 갖는다.The color-dispersion-preventing fine pattern 38 diffuses the blue light by the material to prevent the blue color from diffusing, disperses the light to diffuse the blue light, and keeps the remainder to remain, thereby thinning the band of the clear pixel .

이상에서 설명한 바와 같이 본 발명에서는 자동차용 헤드램프의 전방을 세분화하여 미세한 ON/OFF를 구현하기 위해 구역별로 다수의 LED를 설치하지 않고, 카메라 센서에 의해 감지된 위치를 통해 음영부와 발광부의 패턴을 생성하여 이를 LCD(20)에 투과시켜 전방으로 비춤으로써 적은 수의 LED를 설치하고도 미세한 각도의 제어가 가능한 효과가 있는 것이다.As described above, according to the present invention, in order to finely turn ON / OFF the front of an automobile head lamp, a plurality of LEDs are not provided for each zone, and a pattern of a shadow portion and a light emitting portion And transmits it to the LCD 20 so as to be forwardly turned, so that even if a small number of LEDs are provided, fine angle control can be performed.

전술한 본 발명의 설명은 예시를 위한 것이며, 본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다.It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be.

그러므로 이상에서 기술한 실시 예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

상술한 본 발명의 설명에서는 구체적인 실시 예에 관해 설명하였으나, 여러 가지 변형이 본 발명의 범위에서 벗어나지 않고 실시할 수 있다. 따라서 본 발명의 범위는 설명된 실시 예에 의하여 정할 것이 아니고 특허청구범위 및 그 특허청구범위와 균등한 것에 의해 정해 져야 한다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of claims and equivalents thereof.

(10)-- LED 광원부
(12)-- LDE 칩
(14)-- 빔성형렌즈
(16)-- 자유곡면렌즈
(20)-- 투과형 LCD
(22a)(22b)-- 편광판
(30)-- 렌즈부
(32)-- 양면 자유곡면렌즈
(34)-- 회절광학소자
(36)-- 자유곡면렌즈
(38)-- 색분산방지 미세패턴(10) LED light source
(12) - LDE chip
(14) - beam shaping lens
(16) - free-form surface lens
(20) - Transmissive LCD
(22a) and (22b) polarizers
(30) -Lens portion
(32) - double-sided free-form surface lens
(34) -diffractive optical element
(36) - free-form surface lens
(38) - Chromatic dispersion prevention fine pattern

Claims (4)

자동차용 LED 헤드램프에 있어서,
LED 칩(12)이 설치되어 광원을 발산하는 LED 광원부(10)와,
자동차에 설치된 카메라센서에 의해 감지된 신호로 생성된 발광패턴을 전송받아 설정된 패턴으로 LED 광원부(10)의 빛이 투과되도록 하여 전방의 대향하는 차량이나 사람에게 헤드램프의 빛이 비치지 않도록 음영부를 형성하는 투과형 LCD(20)와,
상기 투과형 LCD(20)에 의한 빛을 자동차의 전방으로 비춰주는 렌즈부(30)로 구성되는 것을 특징으로 하는 투과형 LCD가 설치된 자동차용 LED 헤드램프.
In an automotive LED headlamp,
An LED light source 10 having an LED chip 12 and emitting a light source,
A light emission pattern generated by a signal sensed by a camera sensor installed in a vehicle is received and light of the LED light source unit 10 is transmitted in a predetermined pattern so that a shadow is formed so that the light of the head lamp is not transmitted to a vehicle or a person facing the front A transmissive LCD 20,
And a lens unit (30) for reflecting light emitted from the transmissive LCD (20) toward the front of the vehicle.
제1항에 있어서,
상기 LED 광원부(10)는 LED 칩(12)에 의해 발광하는 빛이 직진상으로 보내질 수 있도록 하는 빔성형렌즈(14)와, 광원의 빛을 모아서 전방의 투과형 LCD(20)로 균일하게 반사시키기 위한 자유곡면렌즈(16)를 포함하여 구성되는 것을 특징으로 하는 투과형 LCD가 설치된 자동차용 LED 헤드램프.
The method according to claim 1,
The LED light source unit 10 includes a beam shaping lens 14 for allowing the light emitted by the LED chip 12 to be sent in a straight line and a light source for collecting the light of the light source and uniformly reflecting the light from the light source to the forward transmissive LCD 20. [ And a free-form curved surface lens (16) for illuminating the LED.
제1항에 있어서,
투과형 LCD(20)를 통과한 빛을 집중시켜 헤드램프의 조사방향으로 전달하기 위한 양면 자유곡면렌즈(32)를 포함하여 구성되는 것을 특징으로 하는 투과형 LCD가 설치된 자동차용 LED 헤드램프.
The method according to claim 1,
And a double-sided free curved surface lens (32) for concentrating the light passing through the transmissive LCD (20) and transmitting the light in the irradiating direction of the headlamp.
제1항에 있어서,
상기 렌즈부(30)는 출사되는 빛을 회절 및 굴절시켜 집광함과 함께 색보정이 가능하도록 하는 회절광학소자(34)를 포함하여 구성되는 것을 특징으로 하는 투과형 LCD가 설치된 자동차용 LED 헤드램프.
The method according to claim 1,
Wherein the lens unit (30) comprises a diffractive optical element (34) for condensing light by diffracting and refracting light to enable color correction.
KR1020170055744A 2017-04-28 2017-04-28 Head led lamp for vehicle with lcd KR20180121261A (en)

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