KR960024275A - Optical distance measuring device for vehicle collision prevention device - Google Patents

Optical distance measuring device for vehicle collision prevention device Download PDF

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Publication number
KR960024275A
KR960024275A KR1019940039867A KR19940039867A KR960024275A KR 960024275 A KR960024275 A KR 960024275A KR 1019940039867 A KR1019940039867 A KR 1019940039867A KR 19940039867 A KR19940039867 A KR 19940039867A KR 960024275 A KR960024275 A KR 960024275A
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KR
South Korea
Prior art keywords
light
distance measuring
optical distance
measuring device
light receiving
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Application number
KR1019940039867A
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Korean (ko)
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KR0147234B1 (en
Inventor
임영빈
조덕상
Original Assignee
김주용
현대전자산업 주식회사
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Priority to KR1019940039867A priority Critical patent/KR0147234B1/en
Publication of KR960024275A publication Critical patent/KR960024275A/en
Application granted granted Critical
Publication of KR0147234B1 publication Critical patent/KR0147234B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication

Abstract

본 발명은 차량충돌 방지장치에 사용하는 광학식 거리측정장치에 있어서, 특히 레이저 빔을 발광시켜 발광된 레이저 빔이 물체에 맞고 반사되는 시간을 측정하여 거리를 측정토록함을 특징으로 하는 차량충돌방지 장치용 광학식 거리측정장치에 관한 것으로, 종래의 광학식 거리측정장치는 군사용이나 산업용으로 사용되어 거치식으로 되어 있으므로 크기도 크고 가격이 비싸 소형차량에 장착할 수 없는 문제점이 있어, 본 발명은 차량층돌방지용으로 차량의 장착에 적합한 광학식 거리측정장치를 구현토록 소형화를 행하고, 거리를 측정할 수 있도록 레이저 빔의 발광 및 수광장치를 내장하여 차량에 설치가능토록 소형화 할 수 있으며, 회절격자를 설치하여 측정불가영역을 감소시키고, 편광자 장착으로 태양광 및 외란광의 영향을 감소시킬 수 있어. 정확한 거리측정이 가능하다.The present invention relates to an optical distance measuring apparatus used in a vehicle collision preventing device, in particular a vehicle collision preventing device characterized in that to measure the distance by measuring the time that the laser beam is emitted and hit the object and reflected by emitting a laser beam The present invention relates to an optical distance measuring device for a vehicle, and the conventional optical distance measuring device is used for military or industrial purposes and is mounted on a stationary type. It can be miniaturized to implement an optical distance measuring device suitable for mounting a vehicle, and can be miniaturized so that it can be installed in a vehicle by incorporating a light emitting and receiving device of a laser beam so as to measure a distance. And the polarizer mounting can reduce the effects of sunlight and disturbance . Accurate distance measurement is possible.

Description

차량충돌방지 장치용 광학식 거리측정장치Optical distance measuring device for vehicle collision prevention device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 정면도, 제2도는 본 발명의 A-A′선 단면도, 제3도는 제2도의 분해도, 제4도는 일반적인 레이저빔 발사시 측정불가 영역도, 제5도는 본 발명의 회절격자 이용시 측정불가 영역도, 제6도(A)는 레이저 다이오드의 파장별 분포도, (B)는 태양광의 파장별 분포도, (C)는 보호용 유리에 코팅시 파장별 분포도,제7도는 본 발명에 사용되는 편광자의 원리도이다.FIG. 1 is a front view of the present invention, FIG. 2 is a sectional view taken along the line AA ′ of the present invention, FIG. 3 is an exploded view of FIG. 2, FIG. 4 is a non-measurable area diagram when a general laser beam is fired, and FIG. 5 is a diffraction grating of the present invention. The unmeasurable area diagram, FIG. 6 (A) shows the wavelength distribution of the laser diode, (B) shows the wavelength distribution of the sunlight, (C) shows the distribution according to the wavelength when coating the protective glass, and FIG. 7 is used in the present invention. It is a principle diagram of a polarizer.

Claims (6)

전면에 위치하는 발광렌즈(13) 고정용 발광렌즈 고정링(12)과 레이저 발산각 조절용 회절격자(14) 및 후면에 위치하는 레이저 구동용 다이오드(16)를 일직선상으로 수장하여 고정시킨 발광용 배럴(15)과, 레이저 구동회로부(17) 및 발광렌즈 보호용 유리(11)를 한 세트로 구비한 발광부(10)와, 전면에 위치하는 수광렌즈(23) 고정용 수광렌즈 고정링(22)과 레이저 빔 투과용 편광자(24) 및 후면에 위치하는 레이저 수광용 포토다이오드(26)를 일직선 상으로 수장하여 고정시킨 수광용 배럴(25)과, 수신신호 처리부(27) 및 수광렌즈 보호용 유리(21)를 한 세트로 구비한 수광부(20)로 구성하고, 상기 발광부(10)와 수광부(20)는 격자(31)를 사이에 두고 하우징(30)에 각각 고정되어 이루어짐을 특징으로 하는 차량충돌방지 장치용 광학식 거리측정장치.The light emitting lens fixing ring 12 for fixing the light emitting lens 13 located at the front side, the diffraction grating 14 for adjusting the laser divergence angle, and the laser driving diode 16 positioned at the back side are fixed in a straight line. A light emitting unit 10 including a barrel 15, a laser driving circuit unit 17, and a light emitting lens protection glass 11 as a set, and a light receiving lens fixing ring for fixing a light receiving lens 23 located at the front side. ), A light receiving barrel 25 in which a laser beam transmitting polarizer 24 and a laser light receiving photodiode 26 positioned at the rear thereof are mounted and fixed in a straight line, and a reception signal processor 27 and a glass for protecting a light receiving lens. And a light receiving unit 20 having a set of 21, and the light emitting unit 10 and the light receiving unit 20 are fixed to the housing 30 with the grating 31 interposed therebetween. Optical distance measuring device for vehicle collision prevention device. 제1항에 있어서, 상기 회절격자(14)는 레이저 빔 투과시 레이저 빔을 다수개로 분리가능토록 표면에 요철을 형성함을 특징으로 하는 차량충돌방지 장치용 광학식 거리측정장치.The optical distance measuring device of claim 1, wherein the diffraction grating (14) forms irregularities on a surface of the diffraction grating so that the laser beam can be separated into a plurality of laser beams. 제1항에 있어서, 상기 수광렌즈(23)는 가시광선 차단용 코팅을 형성함을 특징으로 하는 차량충돌방지 장치용 광학식 거리측정장치.2. An optical distance measuring device according to claim 1, wherein the light receiving lens (23) forms a coating for blocking visible light. 제1항에 있어서, 상기 발광부(10)와 수광부(20) 사이에는 발광부(10)로부터 난반사된 레이저빔의 수광부 직접입사 차단용 격자(31)를 설치함을 특징으로 하는 차량충돌방지 장치용 광학식 거리측정장치.The vehicle collision preventing device according to claim 1, further comprising a grating (31) for blocking the light-receiving portion of the laser beam directly reflected from the light-emitting portion (10) between the light-emitting portion (10) and the light-receiving portion (20). Optical distance measuring device. 제1항에 있어서, 상기 수광렌즈(23)와 포토다이오드(26) 사이에는 레이저광 분리용 편광자(24)를 설치함을 특징으로 하는 차량충돌방지 장치용 광학식 거리측정장치.The optical distance measuring device for a collision avoidance device according to claim 1, wherein a polarizer (24) for separating the laser light is provided between the light receiving lens (23) and the photodiode (26). 제1항에 있어서, 상기 회절격자(14)와 편광자(24)는 레이저 다이오드(16) 및 포토다이오드(26)의 표면창에 근접하여 설치함을 특징으로 하는 차량충돌방지 장치용 광학식 거리측정장치.The optical distance measuring device of claim 1, wherein the diffraction grating 14 and the polarizer 24 are installed in close proximity to the surface window of the laser diode 16 and the photodiode 26. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940039867A 1994-12-30 1994-12-30 Optical distance measuring equipment and method for preventing car collision KR0147234B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940039867A KR0147234B1 (en) 1994-12-30 1994-12-30 Optical distance measuring equipment and method for preventing car collision

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Application Number Priority Date Filing Date Title
KR1019940039867A KR0147234B1 (en) 1994-12-30 1994-12-30 Optical distance measuring equipment and method for preventing car collision

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KR960024275A true KR960024275A (en) 1996-07-20
KR0147234B1 KR0147234B1 (en) 1998-08-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150052469A (en) * 2013-11-06 2015-05-14 현대모비스 주식회사 Vehicle Controlling Method and Apparatus therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150052469A (en) * 2013-11-06 2015-05-14 현대모비스 주식회사 Vehicle Controlling Method and Apparatus therefor

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