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公开(公告)号：US11859788B2
公开(公告)日：2024-01-02
申请号：US17761797
申请日：2020-09-14
发明人： Yasuo Toko , Ryotaro Owada
IPC分类号： F21S41/64 , F21S41/25 , B60Q1/14 , F21W107/10
CPC分类号： F21S41/645 , B60Q1/1423 , F21S41/25 , F21W2107/10
摘要： To reduce uneven brightness of light irradiated from a vehicle lighting system. The system includes a lamp unit and a control unit where the lamp unit includes: a light source that emits light; a liquid crystal element using the light emitted from the light source to form irradiation light; and a lens projecting the irradiation light; where the light from the light source enters the element at an angle including a direction inclined from the normal of a light incident surface of the element; where the light incident surface has a first region in which most light enters from a viewing direction of the element and a second region in which most light enters from other directions, and where the control unit drives the element by setting a first voltage of the first region to be low and setting a second voltage of the second region to be high.
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公开(公告)号：US10600978B2
公开(公告)日：2020-03-24
申请号：US15668262
申请日：2017-08-03
发明人： Yasuo Toko
IPC分类号： H01L51/44 , G02F1/1343 , G02F1/1333 , G02F1/03 , H01L51/00 , G02F1/1337
摘要： To improve the accuracy of fully controlling the direction of advancing light. The liquid crystal element includes a first substrate and a second substrate, a liquid crystal layer provided between one surface side of the first substrate and one surface side of the second substrate, a pair of electrodes provided on one surface side of the first substrate with a gap therebetween in a planer view, a high-resistance film provided on one surface side of the first substrate and disposed between the pair of electrodes in a planer view and connected thereto, a first alignment film provided on one surface side of the first substrate covering the pair of electrodes and the high-resistance film, a second alignment film provided on one surface side of the second substrate, wherein sheet resistance of the high-resistance film is greater than sheet resistance of the pair of electrodes.
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公开(公告)号：US20190078749A1
公开(公告)日：2019-03-14
申请号：US16125676
申请日：2018-09-08
发明人： Yasuo Toko , Ryotaro Owada , Yoshifumi Takao
CPC分类号： F21S41/645 , F21S41/285 , F21S41/30 , G02B27/283
摘要： An automotive headlight includes: a light source for emitting light; a polarization beam splitter for receiving a light flux from the light source, and dividing the light flux into a first polarization and a second polarization; a liquid crystal element disposed to receive the first polarization and the second polarization, divided by the polarization beam splitter; a phase shifter disposed on optical axis of one of the first polarization and the second polarization, and aligning polarization axis directions of the first polarization and the second polarization; and an output side polarizer disposed on output side of the liquid crystal element, wherein illumination regions corresponding to respective control electrodes in the liquid crystal element can be controlled to shield light.
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公开(公告)号：US10168595B2
公开(公告)日：2019-01-01
申请号：US14880423
申请日：2015-10-12
发明人： Yasuo Toko , Manabu Yatabe , Norihisa Kobayashi
摘要： An electrodeposition element is provided which includes a first substrate including a first member and an electrode arranged above the first member, a second substrate arranged opposite to the first substrate and including an electrode, and an electrolyte layer arranged between the electrodes of the first substrate and the second substrate, and including an electrodeposition material that contains silver. When a voltage is applied between the electrodes of the first substrate and the second substrate such that the first substrate side is negative and the second substrate side is positive, a reflective surface made of a silver thin film and reflecting light, which is incident from a direction normal to the first and second substrates, in a direction not parallel to the incident direction of the light is formed above the electrode of the first substrate.
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公开(公告)号：US09348191B2
公开(公告)日：2016-05-24
申请号：US14094409
申请日：2013-12-02
发明人： Yasuo Toko
IPC分类号： G02F1/1343 , G02F1/1337 , G02F1/139
CPC分类号： G02F1/1396 , G02F1/133784 , G02F2001/133749 , G02F2001/134381
摘要： A liquid crystal element achieving both optical control utilizing a memory property and optical control capable of supporting moving image displays is disclosed. The first substrate and the second substrate of the element are set in an orientation process direction that ensures generation of a first orientation state, and a chiral material that generates a second orientation state is included in the liquid crystal layer. The layer transitions from the second orientation state to the first orientation state when an electric field of a layer thickness direction is applied. The layer transitions from the first orientation state to the second orientation state when an electric field of a direction perpendicular to the layer thickness direction is applied. And the layer returns to the second orientation state when an orientation change is generated according to the strength of the electric field when an electric field of the perpendicular direction is applied.
摘要翻译： 公开了一种实现利用存储特性的光学控制和能够支持运动图像显示的光学控制的液晶元件。 元件的第一基板和第二基板被设置在确保第一取向状态的产生的取向处理方向上，并且在液晶层中包括产生第二取向状态的手性材料。 当施加层厚度方向的电场时，层从第二取向状态转变到第一取向状态。 当施加垂直于层厚度方向的方向的电场时，层从第一取向状态转变到第二取向状态。 当施加垂直方向的电场时，根据电场的强度产生取向变化时，层返回到第二取向状态。
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公开(公告)号：US11906854B2
公开(公告)日：2024-02-20
申请号：US17623121
申请日：2020-06-15
发明人： Yasuo Toko , Hiroshi Tozuka
IPC分类号： G02F1/1343 , F21S41/64
CPC分类号： G02F1/134309 , F21S41/645
摘要： A liquid crystal element includes a first substrate, a second substrate arranged to face the first substrate, a first pixel electrode corresponding to a first pixel region arranged on the first substrate on the second substrate side, a second pixel electrode corresponding to a second pixel region arranged on the first substrate on the second substrate side, a common electrode arranged on the first substrate side of the second substrate, and a liquid crystal layer arranged between a group of the first and second pixel electrodes and the common electrode, where the first pixel electrode and the second pixel electrode are provided on different layers on the first substrate, and their ends are arranged so as to partially overlap each other in a plan view.
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7.发明授权公开(公告)号：US11009734B2
公开(公告)日：2021-05-18
申请号：US16547771
申请日：2019-08-22
发明人： Yasuo Toko , Yoshihisa Iwamoto , Takuya Kitazono
IPC分类号： G02F1/1333 , F21S41/64
摘要： To reliably perform light irradiation in a vehicular lamp system using a liquid crystal element even in a cryogenic environment. A control device for a vehicular lamp comprising a light source and a liquid crystal element where the liquid crystal element is set to a light-shielded state and the light source is set to a light-on state to heat the liquid crystal element by the light emitted from the light source when the temperature of the liquid crystal element is estimated to be lower than a predetermined value.
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公开(公告)号：US10738958B2
公开(公告)日：2020-08-11
申请号：US16231350
申请日：2018-12-21
发明人： Yasuo Toko , Yoshifumi Takao , Takashi Sugiyama
IPC分类号： F21S41/64 , F21S41/135 , F21S41/25 , F21S41/141 , F21S41/176 , B60Q1/14 , H05B47/105 , F21Y115/10
摘要： A lighting device comprising: a light source for emitting lights along optic axis toward field of view; a liquid crystal element disposed on the optic axis, having electrode pattern in far field FF corresponding region and having no electrode pattern in near field corresponding region; a pair of polarizers including input side and output side polarizers sandwiching the liquid crystal element, constituting crossed Nicol polarizers; driver circuit for forming voltages applied to the electrode pattern; and phase shift forming element disposed between the pair of polarizers in the near field corresponding region of the liquid crystal element; wherein the far field corresponding region constitutes normally black optic system together with the pair of polarizers, and the near field corresponding region constitutes normally-on optic system together with the phase shift forming element and the pair of polarizers.
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公开(公告)号：US20190195457A1
公开(公告)日：2019-06-27
申请号：US16231350
申请日：2018-12-21
发明人： Yasuo Toko , Yoshifumi Takao , Takashi Sugiyama
IPC分类号： F21S41/64 , F21S41/135 , F21S41/25 , F21S41/141 , B60Q1/14 , F21S41/176
摘要： A lighting device comprising: a light source for emitting lights along optic axis toward field of view; a liquid crystal element disposed on the optic axis, having electrode pattern in far field FF corresponding region and having no electrode pattern in near field corresponding region; a pair of polarizers including input side and output side polarizers sandwiching the liquid crystal element, constituting crossed Nicol polarizers; driver circuit for forming voltages applied to the electrode pattern; and phase shift forming element disposed between the pair of polarizers in the near field corresponding region of the liquid crystal element; wherein the far field corresponding region constitutes normally black optic system together with the pair of polarizers, and the near field corresponding region constitutes normally-on optic system together with the phase shift forming element and the pair of polarizers.
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公开(公告)号：US09971224B2
公开(公告)日：2018-05-15
申请号：US15332217
申请日：2016-10-24
发明人： Yasuo Toko
IPC分类号： G02F1/155 , G02F1/163 , G02F1/1362 , G02F1/15 , G09G3/38
CPC分类号： G02F1/163 , G02F1/136204 , G02F1/1506 , G02F1/1525 , G02F1/155 , G09G3/38 , G09G2310/0256
摘要： To prevent damage in an electro-optical device that uses electrochromic material. The device includes electro-optical elements and a driving device that applies a driving voltage to the electro-optical elements. The driving device applies a first DC voltage of a positive polarity that cyclically repeats a first voltage and a second voltage that is lower than the first voltage, or a second DC voltage of a negative polarity that cyclically repeats a third voltage and a fourth voltage that is higher than the third voltage, to the electro-optical elements. According to the driving device, when the first DC voltage is applied to one and the second DC voltage is applied to the other electro-optical elements adjacent in the planar view, the first and the second DC voltages are supplied by time division so that the applied period of the first voltage and the third voltage do not overlap.
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