JP2020031068 OPTICAL UNIT

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Application Number 2019214278

Application Date 27.11.2019

Publication Number 2020031068

Publication Date 27.02.2020

Grant Number 6916260

Grant Date 19.07.2021

Publication Kind B2

IPC

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Applicants KOITO MFG CO LTD
株式会社小糸製作所

Inventors YAMAMURA SATOSHI
山村　聡志

Agents 森下　賢樹
村田　雄祐
三木　友由

Priority Data 2010092123 13.04.2010 JP
2010092124 13.04.2010 JP
2010097946 21.04.2010 JP
2010110139 12.05.2010 JP
2011021905 03.02.2011 JP

Title

(EN) OPTICAL UNIT

(JA) 光学ユニット

Abstract

(EN)

PROBLEM TO BE SOLVED: To provide a technology that relates to an optical unit capable of efficiently utilizing light of a light source for illumination.

SOLUTION: In an optical unit, a rotation reflector 26 rotates around a rotation axis in one direction while reflecting light emitted from a light source. The rotation reflector 26 is provided with a reflection surface so that the light of the light source reflected by the rotating rotation reflector 26 forms a desired light distribution pattern. The light source is formed by light emitting elements. The rotation axis is provided on a plane including an optical axis and the light source. In the rotation reflector 26, blades functioning as reflection surfaces are provided around the rotation axis.

SELECTED DRAWING: Figure 1

(JA)

【課題】光源の光を照明に効率よく利用可能な光学ユニットに関する技術を提供する。
【解決手段】光学ユニットにおいて、回転リフレクタ２６は、光源から出射した光を反射しながら回転軸を中心に一方向に回転する。回転リフレクタ２６は、回転しながら反射した光源の光が所望の配光パターンを形成するよう反射面が設けられている。光源は、発光素子からなる。回転軸は、光軸と光源とを含む平面内に設けられている。回転リフレクタ２６は、反射面として機能するブレードが回転軸の周囲に設けられている。
【選択図】図１

F	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21	LIGHTING
S	NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41	Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
60	characterised by a variable light distribution
67	by acting on reflectors
675	by moving reflectors

F	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21	LIGHTING
S	NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41	Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10	characterised by the light source
12	characterised by the type of emitted light
13	Ultraviolet light; Infrared light

F	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21	LIGHTING
S	NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41	Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10	characterised by the light source
14	characterised by the type of light source
141	Light emitting diodes
147	the main emission direction of the LED being angled to the optical axis of the illuminating device
148	the main emission direction of the LED being perpendicular to the optical axis

F	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21	LIGHTING
S	NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41	Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10	characterised by the light source
14	characterised by the type of light source
141	Light emitting diodes
151	arranged in one or more lines

F	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21	LIGHTING
S	NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
41	Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
10	characterised by the light source
19	Attachment of light sources or lamp holders

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1. JP2020031068 - OPTICAL UNIT

F	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21	LIGHTING
V	FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
14	Controlling the distribution of the light emitted by adjustment of elements
04	by movement of reflectors

F	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21	LIGHTING
W	INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V124
102	Exterior vehicle lighting devices for illuminating purposes
10	Arrangement or contour of the emitted light
13	for high-beam region or low-beam region
135	the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
14	having vertical cut-off lines; specially adapted for adaptive high beams, i.e. the beam is broader but avoids glaring other road users
145	wherein the light is emitted between two parallel vertical cut-off lines, e.g. selectively emitted rectangular-shaped high beam

B	PERFORMING OPERATIONS; TRANSPORTING
60	VEHICLES IN GENERAL
Q	ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
1	Arrangements or adaptations of optical signalling or lighting devices
02	the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
04	the devices being headlights
14	having dimming means
1415	Dimming circuits
1423	Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
143	combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers

G	PHYSICS
01	MEASURING; TESTING
S	RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13	Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02	Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06	Systems determining position data of a target
42	Simultaneous measurement of distance and other co-ordinates
426	Scanning radar, e.g. 3D radar

B	PERFORMING OPERATIONS; TRANSPORTING
60	VEHICLES IN GENERAL
R	VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
11	Arrangements for holding or mounting articles, not otherwise provided for
04	Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle

H	ELECTRICITY
04	ELECTRIC COMMUNICATION TECHNIQUE
N	PICTORIAL COMMUNICATION, e.g. TELEVISION
7	Television systems
18	Closed circuit television systems, i.e. systems in which the signal is not broadcast
183	for receiving images from a single remote source