公开(公告)号：EP1079483A3

公开(公告)日：2001-04-04

申请号：EP00113568.0

申请日：2000-06-27

Applicant: LDT GmbH & Co. Laser-Display-Technologie KG

Inventor： Deichsel, Eckard ,  Jäger, Roland ,  Unger, Peter

IPC: H01S3/08 ,  G02F1/35 ,  G02B5/08

CPC classification number: B82Y20/00 ,  G02F1/3523 ,  G02F1/3556 ,  G02F2201/346 ,  G02F2202/108 ,  H01S3/08059 ,  H01S3/1118 ,  H01S3/113

Abstract: Die Erfindung betrifft einen Resonatorspiegel mit einem Sättigbaren Absorber für eine Laserwellenlänge λ L , der aus einer Schichtfolge mehrerer Halbleiterschichten auf einem Substrat (1) aufgebaut ist, wobei auf einer Oberfläche des Substrates (1) ein Bragg- Reflektor (2) aufgewachsenen ist, welcher aus einer Vielzahl alternierend angeordneter Schichten aus einem ersten Material (4) mit einem Brechungsindex n H und aus einem zweiten Material (5) mit einem dem gegenüber niedrigeren Brechungsindex n L besteht. Sie ist dadurch gekennzeichnet, daß auf dem Bragg-Reflektor (2) eine Dreifach-Schicht (3) aufgewachsen ist, bei der eine Einfach-Quantenschicht (6) innerhalb von zwei Schichten (4' und 4'' oder 5' und 5'') außerhalb eines Intensitätsminimums für die Laserstrahlung λ L eingelagert ist und die Dreifach-Schicht zusammen optisch dick ist.

公开(公告)号：EP0844511A2

公开(公告)日：1998-05-27

申请号：EP98102389.8

申请日：1993-10-07

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventor： Mizuuchi, Kiminori ,  Yamamoto, Kazuhisa

IPC: G02F1/37 ,  G02F1/35

CPC classification number: G02F1/3558 ,  G02F1/03 ,  G02F1/3775 ,  G02F2001/3546 ,  G02F2001/3548 ,  G02F2201/346 ,  G02F2202/20 ,  Y10T29/49016

Abstract: An optical wavelength converting device is provided with a LiTaO 3 substrate, a plurality of inverted-polarization layers periodically arranged in an upper surface of the LiTaO 3 substrate, and an optical waveguide crossing the inverted-polarization layers. The upper surface of the LiTaO 3 substrate is directed toward a -X-crystal axis direction. The inverted-polarization layers are formed by exchanging Ta + ions of the LiTaO 3 substrate for H + ions. The substrate is formed by cutting out LiTaO 3 crystal along a plane inclined to the C-crystal axis towards the X-crystal axis. The spontaneous polarization is directed in a +C-crystal axis direction. The optical waveguide is formed by exchanging Ta + ions of the LiTaO 3 substrate and the inverted-polarization layers for H + ions to set a refractive index of the optical waveguide higher than that of the LiTaO 3 substrate. The optical waveguide extends in a -Y-crystal axis direction. Fundamental waves polarized in a transverse electric mode induce electric field directed in ±Y-crystal axis directions and are converted into second harmonic waves in the optical waveguide.

Abstract translation: 光波长转换装置设置有LiTaO 3衬底，周期性地布置在LiTaO 3衬底的上表面中的多个倒置极化层和与反极化层交叉的光波导。 LiTaO3基板的上表面朝向-X晶轴方向。 通过将LiTaO 3衬底的Ta +离子交换为H +离子而形成反向偏振层。 通过沿着与C晶轴倾斜的平面朝向X晶轴切割LiTaO 3晶体来形成衬底。 自发极化指向+ C晶轴方向。 通过交换LiTaO3衬底的Ta +和H +离子的反向偏振层来形成光波导，以使光波导的折射率高于LiTaO 3衬底的折射率。 光波导沿-Y轴方向延伸。 在横向电模式中极化的基波感应在+/- Y晶轴方向上引导的电场，并在光波导中转换成二次谐波。

公开(公告)号：EP0012439A1

公开(公告)日：1980-06-25

申请号：EP79105158.4

申请日：1979-12-13

Applicant: MTA KÖZPONTI FIZIKAI KUTATO INTEZETE

Inventor： Kertész, Iván ,  Lutter, András

IPC: G02F1/21 ,  H01S3/10

CPC classification number: G02F1/21 ,  G02F1/03 ,  G02F2001/213 ,  G02F2201/346 ,  H01S3/1062

Abstract: Ein Lichtmodulator oder Lichtschalter mit veränderbarer Durchlässigkeit, welcher zwei aus Dielektrikum-Schichten mit mindestens zweierlei Brechungsindizes bestehende Spiegel (3, 5) und zwischen den beiden einen Aktivstoff (4) enthält, wobei zwei stromleitende Schichten (2, 6) - zu jedem Spiegel eine - vorgesehen sind, und die Durchlässigkeit der Vorrichtung durch Niederspannung verändert werden kann.
Der Lichtmodulator oder Lichtschalter wird mindestens zum Teil auf vakuumtechnischem Wege hergestellt.

Abstract translation: 这个无级变速器光调制器或光开关包括两个反射镜（3,5）上的活性物质（4），两个电流传导层（2具有至少两个不同折射率的由...组成的电介质层的和，他们两个之间， 6） - 一个用于每个反射镜 - 被提供，并认为很可能的是，装置的发送到由低电压而变化。 光调制器或光开关产生至少部分地使用真空技术。

公开(公告)号：US20230290907A1

公开(公告)日：2023-09-14

申请号：US18320057

申请日：2023-05-18

Applicant: XIAMEN SAN'AN OPTOELECTRONICS CO., LTD.

Inventor： Qing WANG ,  Wei LI ,  Minyou HE ,  Shiwei LIU ,  Ling-yuan HONG ,  Su-hui LIN ,  Chung-ying CHANG

IPC: H01L33/46 ,  G02F1/13357

CPC classification number: H01L33/46 ,  G02F1/1336 ,  G02F2201/346

Abstract: A light-emitting device includes a light-emitting element including an epitaxial structure and a DBR. The DBR includes first and second reflective units. The first reflective unit includes first reflective structures. The second reflective unit includes second reflective structures. Each of the first and second reflective structures has first and second material layers. The first material layer of each of the first reflective structures has an optical thickness different from that of the first material layer of each of the second reflective structures. The second material layer of each of the first reflective structures has an optical thickness different from that of the second material layer of each of the second reflective structures. In each of the first and second reflective structures, the first material layer has a refractive index different from that of the second material layer.

公开(公告)号：US09921453B2

公开(公告)日：2018-03-20

申请号：US15364190

申请日：2016-11-29

Applicant: Facebook, Inc.

Inventor： Tobias Gerard Tiecke ,  Kevin Jerome Quirk ,  Yael Maguire

IPC: H04B10/116 ,  G02F1/365

CPC classification number: G02F1/365 ,  G02F2201/346 ,  H04B10/1141 ,  H04B10/116

Abstract: Various of the disclosed embodiments incorporate wavelength-shifting (WLS) materials to facilitate high data rate communication. Some embodiments employ a waveguide incorporating such WLS materials to receive a wireless signal from a source. The signal may be, e.g., in the optical or ultraviolet ranges, facilitating a ˜10 Gbps data rate. Because the WLS material is sensitive in all directions, the source may be isotropic or wide-angled. The WLS material may be shaped into one or more “bands” that may cover an object, e.g., a head-mounted display. A detector may be coupled with the bands to receive the wavelength-shifted signal and to recover the original signal from the source. The WLS material may be modified to improve the waveguide retention, e.g., by incorporating layers of material having a different reflection coefficient or a Bragg reflector.

公开(公告)号：US09817251B1

公开(公告)日：2017-11-14

申请号：US15144559

申请日：2016-05-02

Applicant: Futurewei Technologies, Inc.

Inventor： Jianmin Gong ,  Xuejin Yan ,  Dekun Liu ,  Liqiang Yu ,  Shengping Li ,  Jing Hu

IPC: H04B10/00 ,  G02F1/015 ,  H04J14/02 ,  H04J14/00

CPC classification number: G02F1/015 ,  G02F1/21 ,  G02F2001/0151 ,  G02F2201/346 ,  G02F2203/055 ,  H04J14/0215

Abstract: An optical filter comprising a first distributed Bragg reflector (DBR) layer, a second DBR layer, and an intrinsic semiconductor layer positioned between the first DBR layer and the second DBR layer, with the intrinsic semiconductor layer providing a passband wavelength for the optical filter based on a carrier density of the intrinsic semiconductor layer.

公开(公告)号：US20170219906A1

公开(公告)日：2017-08-03

申请号：US15418108

申请日：2017-01-27

Applicant: HELIOTROPE TECHNOLOGIES, INC.

Inventor： Guillermo GARCIA ,  Sourav BASU ,  Jason HOLT

IPC: G02F1/163 ,  G02F1/153 ,  G02F1/15 ,  G02F1/157

CPC classification number: G02F1/163 ,  G02F1/1508 ,  G02F1/1533 ,  G02F1/157 ,  G02F2001/1536 ,  G02F2201/346 ,  G02F2203/055

Abstract: An electrochromic system and method for controlling photochromic darkening of an electrochromic device, the system including an EC device, a control unit, a voltage detector, and a power supply. The EC device includes a working electrode, a counter electrode, a solid-state polymer electrolyte disposed therebetween, and a Bragg reflector configured to selectively reflect UV radiation away from the working electrode. The control unit is configured to control a sweep voltage applied between the working and counter electrodes, such that the sweep voltage is applied when an open circuit voltage (OCV) between the working and counter electrodes is less than a threshold voltage.

公开(公告)号：US20130230066A1

公开(公告)日：2013-09-05

申请号：US13861576

申请日：2013-04-12

Applicant: FUJI ELECTRIC CO., LTD.

Inventor： Masanori OTO

IPC: H01S3/1055

CPC classification number: H01S3/1055 ,  G01D5/35316 ,  G02B6/022 ,  G02F1/0134 ,  G02F1/37 ,  G02F1/39 ,  G02F2201/16 ,  G02F2201/17 ,  G02F2201/346

Abstract: In aspects of the invention, wavelength conversion element has a harmonic generation portion and a parametric oscillation portion. The harmonic generation portion generates a harmonic of laser light output from a laser light source. The parametric oscillation portion generates signal light and idler light from the harmonic generated by the harmonic generation portion. In some aspects of the invention, electrodes and a first voltage control portion control the intensity of the harmonic generated by the harmonic generation portion. A first FBG (Fiber Bragg Grating) and a second FBG cause resonance of signal light output from the parametric oscillation portion. A piezo tube and a second voltage control portion change the resonance frequency of the first FBG and the second FBG.

Abstract translation: 在本发明的方面中，波长转换元件具有谐波产生部分和参数振荡部分。 谐波产生部分产生从激光源输出的激光的谐波。 参数振荡部分由谐波产生部分产生的谐波产生信号光和惰轮。 在本发明的一些方面中，电极和第一电压控制部分控制由谐波产生部分产生的谐波的强度。 第一FBG（光纤布拉格光栅）和第二FBG引起从参量振荡部分输出的信号光的共振。 压电管和第二电压控制部改变第一FBG和第二FBG的谐振频率。

公开(公告)号：US20120038972A1

公开(公告)日：2012-02-16

申请号：US13260227

申请日：2009-06-18

Applicant: Gary Gibson ,  Stephen Kitson ,  Adrian Geisow

Inventor： Gary Gibson ,  Stephen Kitson ,  Adrian Geisow

IPC: G02F1/167 ,  G02B26/00

CPC classification number: G02F1/167 ,  G02F2001/1678 ,  G02F2201/346 ,  G02F2203/10

Abstract: Various reflective display pixels are provided. In one embodiment, among others, a reflective display pixel for modulating the return of incident visible light is provided that includes one or more stacked cells. Each cell includes a fluid containing a light absorbing medium capable of absorbing incident light in at least one specified wavelength band for that cell and a light returning medium capable of selectively returning at least a portion of the light within the specified wavelength band for that cell. In other embodiments, each cell includes a fluid containing a light absorbing medium capable of absorbing incident light in at least one specified wavelength band for that cell and a light returning medium capable of selectively returning at least a portion of visible light outside the specified wavelength band for that cell.

Abstract translation: 提供各种反射显示像素。 在一个实施例中，提供了包括一个或多个堆叠单元的用于调制入射可见光的返回的反射显示像素。 每个单元包括含有能够吸收该单元的至少一个特定波长带中的入射光的光吸收介质的流体和能够选择性地返回该单元的特定波长带内的至少一部分光的光返回介质。 在其他实施例中，每个单元包括含有能够吸收该单元的至少一个特定波长带中的入射光的光吸收介质的流体和能够选择性地返回指定波长带外的至少一部分可见光的光返回介质 对于那个单元格

公开(公告)号：US07982848B2

公开(公告)日：2011-07-19

申请号：US11832730

申请日：2007-08-02

Applicant: Koichi Murata

Inventor： Koichi Murata

IPC: G02F1/1335 ,  G02F1/13

CPC classification number: G02F1/133512 ,  G02F2001/133521 ,  G02F2201/346 ,  G03B21/006 ,  G03B21/14 ,  G03B21/2053 ,  G03B21/208 ,  H04N5/74 ,  H04N5/7458 ,  H04N9/3108 ,  H04N9/315 ,  H04N9/3152 ,  H04N9/3167

Abstract: A variable light transmission device and projection display apparatus which does not generate vibrations and noises but is superior in light blocking property to a variable aperture using polymer-dispersed liquid crystal and can reduce a color change of a projected image as compared with a conventional variable aperture using liquid crystal. A variable light transmission device having: a pair of transparent substrates placed in parallel to each other; a multi-layer grating member disposed on one of opposing surfaces of the pair of transparent substrates, and transparent members having a multi-layer structure periodically placed to form a diffraction grating with a convex and concave section shape; liquid crystal interposed between the transparent substrates to bury the multi-layer grating member; and transparent electrodes for applying electric field to the liquid crystal.

Abstract translation: 一种可变光透射装置和投影显示装置，其与常规的可变光圈相比，不会产生振动和噪声，而是使用聚合物分散液晶在光可阻挡性方面优于可变孔径并且可以减少投影图像的颜色变化 使用液晶。 一种可变光传输装置，具有：一对彼此平行放置的透明基板; 设置在所述一对透明基板的相对面的一个上的多层光栅部件，以及周期性地配置多层结构的透明部件，形成具有凸部和凹部形状的衍射光栅; 液晶插入在透明基板之间以埋置多层光栅构件; 以及用于向液晶施加电场的透明电极。