WO2017213069A1 - Dispositif de propagation de lumière, dispositif d'affichage et dispositif d'éclairage - Google Patents

Dispositif de propagation de lumière, dispositif d'affichage et dispositif d'éclairage Download PDF

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Publication number
WO2017213069A1
WO2017213069A1 PCT/JP2017/020757 JP2017020757W WO2017213069A1 WO 2017213069 A1 WO2017213069 A1 WO 2017213069A1 JP 2017020757 W JP2017020757 W JP 2017020757W WO 2017213069 A1 WO2017213069 A1 WO 2017213069A1
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WO
WIPO (PCT)
Prior art keywords
light
output
port
control unit
amount
Prior art date
Application number
PCT/JP2017/020757
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English (en)
Japanese (ja)
Inventor
山内　研也
佐藤　正和
正紀 石川
大輔 神原
Original Assignee
アダマンド株式会社
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.)
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Publication date
Application filed by アダマンド株式会社 filed Critical アダマンド株式会社
Priority to JP2018522468A priority Critical patent/JP7042493B2/ja
Publication of WO2017213069A1 publication Critical patent/WO2017213069A1/fr

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    • 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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light

Definitions

  • a light source 310 such as a laser light source
  • a single optical fiber 320 is split into a plurality of (340a to 340n) optical fibers and output ports.
  • an optical splitter has been widely used.
  • the optical splitter branches incident light according to a predetermined branching ratio. For example, in the case of an optical splitter that evenly splits incident light, equal amounts of light are simultaneously emitted from branch destination optical fibers or the like (340a to 340n).
  • an optical switch capable of switching a branch destination is also used.
  • the optical switch is an optical element that switches incident light to one of a plurality of branch destinations.
  • an outgoing light can be arbitrarily controlled by control of a separately provided control unit. It can be switched sequentially at the timing.
  • optical branching element 330 When an optical splitter is used as the optical branching element 330, light having a light quantity according to a predetermined branching ratio can be obtained simultaneously. Further, when an optical switch is used as the optical branching element 330, almost all of the incident light quantity is emitted from the optical fiber or the like selected and switched uniformly.
  • an optical propagation device includes an input port for entering light, an output side port including a plurality of output ports for emitting light to the outside, and a drive voltage.
  • a MEMS optical switch having a tilt mirror controlled to a corresponding tilt angle, and optically coupling one of the input port and the output side port according to the tilt angle of the tilt mirror;
  • a setting acceptance unit that accepts settings relating to the light amount, a light amount control unit that sets a switching schedule indicating an allocation period of each port of the output side port for each cycle based on the setting relating to the light amount, and a basis based on the switching schedule
  • a drive control unit that outputs the drive voltage.
  • a display device includes the above-described light propagation device and a light emission window corresponding to the output port.
  • an illumination device includes the above-described light propagation device and a light diffusion fiber connected to the output port.
  • the present invention it is possible to flexibly change the light amount at the branch destination when the incident light is branched and emitted.
  • the MEMS optical switch 120 includes a tilt mirror 121 and a drive electrode 122.
  • the tilt mirror 121 is disposed at a position where light input from the input port 110 is guided to the reflection surface.
  • the drive electrode 122 adjusts the tilt angle of the tilt mirror 121 according to the input drive voltage. Thereby, the direction of reflected light can be changed.
  • description will be made by taking one axis as an example, but two axes may be used.
  • the tilt angle of the tilt mirror 121 and the position of each port (output boat 130, off-port 132) of the output side port 134 are associated in advance in the light propagation device 100, and the tilt angle of the tilt mirror 121 is changed. Any of the output ports 134 can be irradiated with the light input to the input port 110.
  • the output side port 134 that is the irradiation destination is optically coupled to the input port 110.
  • the drive control unit 143 can be configured by a voltage output device or the like, and outputs a drive voltage to the drive electrode 122 according to a switching schedule.
  • the output port 130 includes four output ports 1 to 4.
  • the switching schedule set by the light amount control unit 142 defines the irradiation timing in one cycle for each of the output side ports 134.
  • a switching schedule as shown in FIG. 2 will be described as an example.
  • W1 is a period for irradiating the output light of the reflected light of the tilt mirror 121
  • W2 is a period for irradiating the output port 2
  • W3 is a period for irradiating the output port 3
  • the output port 4 is irradiated.
  • the period is set to be W4, and W1, W2, W3, and W4, which are continuous with the same period length, are set to be repeated for a plurality of periods. Irradiation to the off-port 132 is not performed.
  • the amount of light at each output port can be uniformly changed by adjusting the period WO irradiated to the off-port 132 in one cycle and evenly assigning the remaining period to each output port.
  • the period allocated to each output port may not be equal. For example, as shown in FIG. 4, the period of W1 allocated to the output port 1 is 50% of one cycle, the period of W2 allocated to the output port 2 is 25%, and the period of WO allocated to the off-port is 25%. Then, it is recognized that 50% light amount is output from the output port 1 and 25% light amount is output from the output port 2. At this time, no light is output from the output port 3 and the output port 4.
  • a key for designating the light amount ratio of each output port and a key for designating the attenuation amount are prepared in the setting reception unit 141, and the light amount control unit 142 assigns the off port based on the designation of the attenuation amount.
  • the WO period is set, and the remaining period can be operated by setting a switching schedule in which the period is assigned to each output port based on the designation of the light quantity ratio.
  • the light quantity of each output port may be changed for each of a plurality of cycles.
  • the light quantity of the output port 1 is 50%
  • the light quantity of the output port 2 is 10%
  • the light quantity of the output port 3 is 10%
  • the light quantity of the output port 4 is 0. %.
  • the light amount of the output port 1 is 0%
  • the light amount of the output port 2 is 50%
  • the light amount of the output port 3 is 10%
  • the light amount of the output port 4 is 10%
  • the N1 cycle N2 period, N3 period, and N4 period
  • the light quantity of each output port is set to be different.
  • N1, N2, N3, N4... May be the same number of cycles or different.
  • the light quantity of each output port may be set different for each period of N1, N2, N3, N4, and so on, but each output port in each period May be set so that the amount of light is the same.
  • the angle of the tilt mirror 121 depends on the drive voltage Va (t) applied to the drive electrode 122, the drive voltage Va (t) corresponding to the angle before the change of the tilt mirror 121 is V0, and the angle when changed by ⁇ .
  • a driving voltage Va (t) corresponding to is V1.
  • the intermediate voltage V2 being larger than the first signal and smaller than the second signal means that the intermediate voltage V2 is an arbitrary voltage value within the range exceeding the first signal and less than the second signal, and is not necessarily the first signal. And the intermediate voltage value between the second signal and the second signal.
  • V2 and t2 have a relationship that becomes the maximum amplitude of the angle ⁇ after time t2 as a transient response when the drive voltage Va (t) is changed from V0 to V2. . That is, the drive voltage Va (t) is changed to V1 at the moment when V2 is applied as the drive voltage Va (t) and the angle ⁇ has the maximum amplitude. Thereby, the vibration of the tilt mirror 121 can be prevented and can be quickly stabilized at the angle ⁇ . Note that V2 and t2 on mounting are determined theoretically and experimentally.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un dispositif de propagation de lumière apte à faire varier de manière flexible le volume de lumière d'une destination de ramification, lorsque la lumière incidente se ramifie en une pluralité de branches et est émise. Ce dispositif de propagation de lumière est caractérisé en ce qu'il comprend : un port d'entrée dans lequel pénètre la lumière ; un port côté sortie qui comprend une pluralité de ports de sortie qui émettent de la lumière vers l'extérieur ; un commutateur de lumière MEMS qui possède un miroir d'inclinaison commandé selon un angle d'inclinaison correspondant à la tension d'attaque, et qui relie optiquement le port d'entrée et l'un des ports côté sortie en fonction de l'angle d'inclinaison du miroir d'inclinaison ; une unité de réception de réglage qui reçoit un réglage relatif au volume de lumière de la lumière de sortie ; une unité de commande de volume de lumière qui règle, en fonction du réglage relatif au volume de lumière, un programme de commutation indiquant la période d'attribution de chacun des ports côté sortie pour chaque cycle simple ; et une unité de commande d'attaque qui émet une tension de commande en fonction du programme de commutation.
PCT/JP2017/020757 2016-06-07 2017-06-05 Dispositif de propagation de lumière, dispositif d'affichage et dispositif d'éclairage WO2017213069A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018522468A JP7042493B2 (ja) 2016-06-07 2017-06-05 光伝搬装置、表示装置および照明装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016113354 2016-06-07
JP2016-113354 2016-06-07

Publications (1)

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WO2017213069A1 true WO2017213069A1 (fr) 2017-12-14

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JP (1) JP7042493B2 (fr)
WO (1) WO2017213069A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023073884A1 (fr) * 2021-10-28 2023-05-04 日本電信電話株式会社 Système d'irradiation par lumière ultraviolette
WO2023084665A1 (fr) * 2021-11-11 2023-05-19 日本電信電話株式会社 Système de rayonnement uv
WO2024105874A1 (fr) * 2022-11-18 2024-05-23 日本電信電話株式会社 Système de transmission optique, unité de diviseur optique et procédé de transmission optique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373218A (ja) * 1986-09-17 1988-04-02 Olympus Optical Co Ltd レ−ザ光分配装置
JP2003090968A (ja) * 2001-09-18 2003-03-28 Hitachi Metals Ltd 光スイッチ
JP2007192902A (ja) * 2006-01-17 2007-08-02 Fujifilm Corp 微小電気機械素子の駆動方法及び微小電気機械素子アレイの駆動方法、微小電気機械素子及び微小電気機械素子アレイ、並びに画像形成装置
JP2011158688A (ja) * 2010-02-01 2011-08-18 Nikon Corp 光源装置と、これを有する光学装置
JP2013080638A (ja) * 2011-10-04 2013-05-02 Harison Toshiba Lighting Corp 集合線状照明装置およびその駆動方法、並びに灯具
WO2015006302A1 (fr) * 2013-07-11 2015-01-15 Corning Incorporated Unités d'éclairage ayant une fibre optique de diffusion de lumière

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373218A (ja) * 1986-09-17 1988-04-02 Olympus Optical Co Ltd レ−ザ光分配装置
JP2003090968A (ja) * 2001-09-18 2003-03-28 Hitachi Metals Ltd 光スイッチ
JP2007192902A (ja) * 2006-01-17 2007-08-02 Fujifilm Corp 微小電気機械素子の駆動方法及び微小電気機械素子アレイの駆動方法、微小電気機械素子及び微小電気機械素子アレイ、並びに画像形成装置
JP2011158688A (ja) * 2010-02-01 2011-08-18 Nikon Corp 光源装置と、これを有する光学装置
JP2013080638A (ja) * 2011-10-04 2013-05-02 Harison Toshiba Lighting Corp 集合線状照明装置およびその駆動方法、並びに灯具
WO2015006302A1 (fr) * 2013-07-11 2015-01-15 Corning Incorporated Unités d'éclairage ayant une fibre optique de diffusion de lumière

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023073884A1 (fr) * 2021-10-28 2023-05-04 日本電信電話株式会社 Système d'irradiation par lumière ultraviolette
WO2023084665A1 (fr) * 2021-11-11 2023-05-19 日本電信電話株式会社 Système de rayonnement uv
WO2024105874A1 (fr) * 2022-11-18 2024-05-23 日本電信電話株式会社 Système de transmission optique, unité de diviseur optique et procédé de transmission optique

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JPWO2017213069A1 (ja) 2019-04-04
JP7042493B2 (ja) 2022-03-28

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