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11. 发明授权

US06734111B2 Method to GaAs based lasers and a GaAs based laser 失效
标题翻译：基于GaAs的激光器和基于GaAs的激光器的方法
公开(公告)号：US06734111B2
公开(公告)日：2004-05-11
申请号：US09924448
申请日：2001-08-09
申请人： L. Karsten V. Lindström , N. Peter Blixt , Svante H. Söderholm , Lauerent Krummenacher , Christofer Silvenius , Anand Srinivasan , Carl-Fredrik Carlström
发明人： L. Karsten V. Lindström , N. Peter Blixt , Svante H. Söderholm , Lauerent Krummenacher , Christofer Silvenius , Anand Srinivasan , Carl-Fredrik Carlström
IPC分类号： H01L21302
CPC分类号： H01S5/028 , H01S5/0202 , H01S5/0282 , H01S5/12 , H01S5/18 , H01S5/2081 , H01S5/2214
摘要： The invention relates to a method using dry etching to obtain contamination free surfaces on of a material chosen from the group comprising GaAs, GaAlAs, InGaAsP, and InGaAs to obtain nitride layers on arbitrary structures on GaAs based lasers, and a GaAs based laser manufactured in accordance with the method. The laser surface is provided with a mask masking away parts of its surface to be prevented from dry etching. The laser is then placed in vacuum. Dry etching is then performed using a substance chosen from the group containing: chemically reactive gases, inert gases, a mixture between chemically reactive gases and inert gases. A native nitride layer is created using plasma containing nitrogen. A protective layer and/or a mirror coating is added.
摘要翻译：本发明涉及使用干法蚀刻来获得选自GaAs，GaAlAs，InGaAsP和InGaAs的材料的无污染表面的方法，以获得在GaAs基激光器上任意结构上的氮化物层，以及GaAs基激光器按照方法。激光表面设置有遮蔽其表面的部分以防止干蚀刻的掩模。然后将激光置于真空中。然后使用从包含化学反应气体，惰性气体，化学反应气体和惰性气体之间的混合物的组中选择的物质进行干法蚀刻。使用含氮的等离子体产生天然氮化物层。加入保护层和/或镜面涂层。

12. 发明申请

US20140293226A1 EYE-TRACKER ILLUMINATION 有权
标题翻译：眼睛跟踪器照明
公开(公告)号：US20140293226A1
公开(公告)日：2014-10-02
申请号：US14131657
申请日：2012-06-14
申请人： Richard Hainzl , Mattias Kuldkepp , Peter Blixt , Mårten Skogö
发明人： Richard Hainzl , Mattias Kuldkepp , Peter Blixt , Mårten Skogö
IPC分类号： A61B3/113 , G06F3/01
CPC分类号： A61B3/113 , G02B5/18 , G02B27/0093 , G06F3/013 , G06K9/00604
摘要： A subject (180) is illuminated whose movements of at least one eye are to be registered by an eye-tracker for producing resulting data (DEYE). To this aim, a coherent light source in light producing means (140) produces at least one well-defined light beam (L1, L2). A diffractive optical element is arranged between the coherent light source and an output from the light producing means (140). The diffractive optical element is configured to direct a light beam (L1) towards at least a first designated area (A1) estimated to cover the at least one eye of the subject (180). Image registering means (150) registers light from the at least one light beam (L1, L2) having been reflected against the subject (180). The resulting data (DEYE) are produced in response to these light reflections, which resulting data (DEYE) represent movements of the at least one eye of the subject (180).
摘要翻译：对被摄体（180）进行照明，其中至少一只眼睛的移动将由眼睛跟踪器注册以产生结果数据（DEYE）。为此目的，在光产生装置（140）中的相干光源产生至少一个明确定义的光束（L1，L2）。衍射光学元件布置在相干光源和来自光产生装置（140）的输出之间。衍射光学元件被配置为将光束（L1）引导至估计为覆盖被摄体（180）的至少一只眼睛的至少第一指定区域（A1）。图像记录装置（150）记录来自已经反射到被摄体（180）的至少一个光束（L1，L2）的光。产生的数据（DEYE）是响应于这些光反射产生的，所得到的数据（DEYE）表示对象的至少一只眼睛的运动（180）。

13. 发明授权

US08342687B2 Eye-tracking using a GPU 有权
标题翻译：使用GPU进行眼睛跟踪
公开(公告)号：US08342687B2
公开(公告)日：2013-01-01
申请号：US12893128
申请日：2010-09-29
申请人： Peter Blixt , Miroslav Kobetski , Anders Hoglund
发明人： Peter Blixt , Miroslav Kobetski , Anders Hoglund
IPC分类号： A61B3/14 , A61B3/00
CPC分类号： G02B27/0093 , A61B3/113 , G03B15/16 , G06K9/00604
摘要： Provided is a method of determining a gaze point of an eye watching a visual display controllable by a display signal. The method comprises generating a display signal using a graphics card in order for the visual display to produce a screen pattern; receiving a signal encoding an image of the eye including a corneo-scleral reflection of the screen pattern; and determining, based on in part the geometry of said reflection, a gaze point of the eye, wherein said determining a gaze point includes utilizing the graphics card as a parallel processor.The image of the eye may be received directly at the graphics card. The graphics card may extract image features in the eye images. Reference illuminators may be used, and the screen pattern may be interlaced with a distinctive reference pattern.Further provided are a gaze-tracking system and a personal computer system adapted to determine a gaze point of a viewer.
摘要翻译：提供了一种确定眼睛观察视觉显示可视显示的目视点的方法。该方法包括使用图形卡生成显示信号，以使视觉显示产生屏幕图形; 接收编码眼睛图像的信号，包括屏幕图案的角膜巩膜反射; 以及基于所述反射的几何形状确定所述眼睛的凝视点，其中所述确定凝视点包括利用所述图形卡作为并行处理器。眼睛的图像可以直接在图形卡处接收。图形卡可以提取眼睛图像中的图像特征。可以使用参考照明器，并且屏幕图案可以与独特的参考图案隔行扫描。进一步提供了一种注视跟踪系统和适于确定观看者的凝视点的个人计算机系统。

14. 发明申请

US20060018355A1 Laser diode arrays with reduced heat induced strain and stress 审中-公开
标题翻译：具有减少的热诱导应变和应力的激光二极管阵列
公开(公告)号：US20060018355A1
公开(公告)日：2006-01-26
申请号：US10897560
申请日：2004-07-23
申请人： Alfred Feitisch , Carsten Lindstroem , Peter Blixt
发明人： Alfred Feitisch , Carsten Lindstroem , Peter Blixt
IPC分类号： H01S5/00
CPC分类号： H01S5/4025 , H01S5/02272 , H01S5/02276 , H01S5/02423 , H01S5/02476 , H01S5/028 , H01S5/0281
摘要： A laser diode array has a semiconductor layered structure that includes at least one active layer. A heat sink is coupled to semiconductor layered structure. A plurality of laser emitters are formed in the active layer. A majority of the plurality of laser emitters have a spacing between adjacent laser emitters that provides for a more uniform heat distribution.
摘要翻译：激光二极管阵列具有包括至少一个有源层的半导体层状结构。散热器耦合到半导体分层结构。在有源层中形成多个激光发射器。多个激光发射器中的大多数在相邻的激光发射器之间具有间隔，其提供更均匀的热分布。

15. 发明授权

US06259556B1 Optical fibre amplifier having a controlled gain 有权
标题翻译：具有受控增益的光纤放大器
公开(公告)号：US06259556B1
公开(公告)日：2001-07-10
申请号：US09282186
申请日：1999-03-31
申请人： Dirk Lutz , Peter Blixt
发明人： Dirk Lutz , Peter Blixt
IPC分类号： H01S300
CPC分类号： H04B10/296 , H01S3/1301 , H04B10/077 , H04B10/07955 , H04J14/0221
摘要： An optical fiber amplifier for WDM-signals comprises an active optical fiber pumped with pumping light from a pump source. In order to give the amplifier a constant gain for the WDM-signals irrespectively of the number of active WDM-signals an additional light source is arranged to inject, when required, extra light into the active optical fiber, at least in a portion thereof, through a power combiner. The injected light has a wavelength different from that of the WDM-channels and preferably longer so that it will not cause an amplifying or pumping effect in the active optical fiber but so that it still can be amplified in the active fiber. The light source is controlled by a signal derived from an output power measurement device so that it will inject extra light when a WDM-channel becomes inactive. The power of the extra light is thus selected to saturate the optical fiber amplifier at a constant gain irrespectively of the number of signal channels, i.e. of the total power of the input light signals. A light filter can be connected to the output end of the active optical fiber to block light having a wavelength corresponding to the wavelength of the light issued from the light source. Controlling the gain by such injection of “extra signal light” is much quicker than controlling the power of the pumping light.
摘要翻译：用于WDM信号的光纤放大器包括用来自泵浦源的泵浦光泵浦的有源光纤。为了给予放大器对于WDM信号的恒定增益，无论有源WDM信号的数量如何，附加光源被设置成当需要时，至少在其一部分中向有源光纤注入额外的光，通过功率组合器。注入的光具有与WDM通道不同的波长，并且优选地更长，使得其不会在有源光纤中引起放大或泵浦效应，而是仍然可以在有源光纤中被放大。光源由来自输出功率测量装置的信号控制，使得当WDM通道变为不活动时，它将注入额外的光。因此，额外的光的功率被选择为以恒定的增益使光纤放大器饱和，而与信号通道的数量，即输入光信号的总功率无关。光滤波器可以连接到有源光纤的输出端，以阻挡具有对应于从光源发出的光的波长的波长的光。通过这种注入“额外的信号光”来控制增益比控制泵浦光的功率要快得多。

16. 发明授权

US09924864B2 Eye-tracker illumination 有权
公开(公告)号：US09924864B2
公开(公告)日：2018-03-27
申请号：US14131657
申请日：2012-06-14
申请人： Richard Hainzl , Mattias Kuldkepp , Peter Blixt , Mårten Skogö
发明人： Richard Hainzl , Mattias Kuldkepp , Peter Blixt , Mårten Skogö
IPC分类号： A61B3/14 , A61B3/113 , G02B5/18 , G06F3/01 , G02B27/00 , G06K9/00
CPC分类号： A61B3/113 , G02B5/18 , G02B27/0093 , G06F3/013 , G06K9/00604
摘要： A subject (180) is illuminated whose movements of at least one eye are to be registered by an eye-tracker for producing resulting data (DEYE). To this aim, a coherent light source in light producing means (140) produces at least one well-defined light beam (L1, L2). A diffractive optical element is arranged between the coherent light source and an output from the light producing means (140). The diffractive optical element is configured to direct a light beam (L1) towards at least a first designated area (A1) estimated to cover the at least one eye of the subject (180). Image registering means (150) registers light from the at least one light beam (L1, L2) having been reflected against the subject (180). The resulting data (DEYE) are produced in response to these light reflections, which resulting data (DEYE) represent movements of the at least one eye of the subject (180).

17. 发明申请

US20130106681A1 POWER MANAGEMENT IN AN EYE-TRACKING SYSTEM 有权
标题翻译：眼睛跟踪系统中的电源管理
公开(公告)号：US20130106681A1
公开(公告)日：2013-05-02
申请号：US13283224
申请日：2011-10-27
申请人： Henrik ESKILSSON , Mårten SKOGÖ , John ELVESJÖ , Peter BLIXT
发明人： Henrik ESKILSSON , Mårten SKOGÖ , John ELVESJÖ , Peter BLIXT
IPC分类号： G09G5/00
CPC分类号： H04N5/23241 , G02B27/0172 , G02B2027/0138 , G06F3/013 , G06K9/00597 , G09G2330/021 , G09G2354/00 , H04N5/23245
摘要： A personal computer system includes a visual display, an imaging device adapted to provide eye-tracking data by imaging the face of a viewer of the visual display, and an input device for accepting eye-tracking control data and other input data. The imaging device is switchable between at least an active mode, a ready mode and an idle mode, and the switching time from the idle mode to the active mode is longer than the switching time from the ready mode to the active mode. The eye-tracking data provided in the ready mode may include eye position but not eye orientation. The system may include a dedicated input device for forcing the imaging device into active mode by directly triggering an interrupt; alternatively, the dedicated input device forces it permanently into idle mode.
摘要翻译：个人计算机系统包括视觉显示器，适于通过对视觉显示器的观看者的脸进行成像来提供眼睛跟踪数据的成像装置，以及用于接受眼睛跟踪控制数据和其他输入数据的输入装置。成像装置可以在至少活动模式，就绪模式和空闲模式之间切换，并且从空闲模式到活动模式的切换时间长于从就绪模式到活动模式的切换时间。在就绪模式中提供的眼睛跟踪数据可以包括眼睛位置，但不包括眼睛定位。该系统可以包括用于通过直接触发中断来迫使成像装置进入活动模式的专用输入装置; 或者，专用输入设备强制其永久地进入空闲模式。

18. 发明授权

US08339446B2 Adaptive camera and illuminator eyetracker 有权
标题翻译：自适应摄像头和照明器目镜
公开(公告)号：US08339446B2
公开(公告)日：2012-12-25
申请号：US12752258
申请日：2010-04-01
申请人： Peter Blixt , Anders Hoglund , Gunnar Troili , John Elvesjö , Mårten Skogö
发明人： Peter Blixt , Anders Hoglund , Gunnar Troili , John Elvesjö , Mårten Skogö
IPC分类号： H04N9/47 , A61B3/14
CPC分类号： G06K9/00604 , A61B3/0008 , A61B3/0025 , A61B3/113 , A61B3/14 , A61B3/145
摘要： An eye tracker includes at least one illuminator for illuminating an eye, at least two cameras for imaging the eye, and a controller. The configuration of the reference illuminator(s) and cameras is such that, at least one camera is coaxial with a reference illuminator and at least one camera is non-coaxial with a reference illuminator. The controller is adapted to select one of the cameras to be active to maximize an image quality metric and avoid obscuring objects. The eye tracker is operable in a dual-camera mode to improve accuracy. A method and computer-program product for selecting a combination of an active reference illuminator from a number of reference illuminators, and an active camera from a plurality of cameras are provided.
摘要翻译：眼睛跟踪器包括用于照射眼睛的至少一个照明器，用于使眼睛成像的至少两个照相机和控制器。参考照明器和相机的配置使得至少一个相机与参考照明器同轴并且至少一个相机与参考照明器不同轴。控制器适于选择要激活的摄像机之一以使图像质量度量最大化并避免遮挡对象。眼睛跟踪器可在双摄像机模式下操作以提高精度。提供了一种用于从多个参考照明器选择主动参考照明器的组合的方法和计算机程序产品，以及来自多个照相机的主动照相机。

19. 发明授权

US08314707B2 Eye closure detection using structured illumination 有权
标题翻译：使用结构照明的闭眼检测
公开(公告)号：US08314707B2
公开(公告)日：2012-11-20
申请号：US12749612
申请日：2010-03-30
申请人： Miroslav Kobetski , Peter Blixt , Johnny Holmberg , John Mikael Holtz Elvesjo
发明人： Miroslav Kobetski , Peter Blixt , Johnny Holmberg , John Mikael Holtz Elvesjo
IPC分类号： G08B23/00
CPC分类号： A61B5/18 , B60K28/066 , G06K9/00597 , G06K9/00604 , G06K9/2018 , G08B21/06 , H04N7/18 , Y02T10/84
摘要： A monitoring system monitors and/or predicts drowsiness of a driver of a vehicle or a machine operator. A set of infrared or near infrared light sources is arranged such that an amount of the light emitted from the light source strikes an eye of the driver or operator. The light that impinges on the eye of the driver or operator forms a virtual image of the signal sources on the eye, including the sclera and/or cornea. An image sensor obtains consecutive images capturing the reflected light. Each image contains glints from at least a subset or from all of the light sources. A drowsiness index can be determined based on the extracted information of the glints of the sequence of images. The drowsiness index indicates a degree of drowsiness of the driver or operator.
摘要翻译：监视系统监视和/或预测车辆或机器操作者的驾驶员的困倦。一组红外线或近红外光源被布置成使得从光源发射的光的量撞击驾驶员或驾驶员的眼睛。撞在驾驶员或操作者的眼睛上的光形成眼睛上的信号源的虚拟图像，包括巩膜和/或角膜。图像传感器获得捕获反射光的连续图像。每个图像包含至少一个子集或来自所有光源的闪光。可以基于所提取的图像序列的闪烁的信息来确定嗜睡指数。嗜睡指数表示司机或操作者的睡意度。

20. 发明授权

US08220926B2 Visual display with illuminators for gaze tracking 有权
标题翻译：视觉显示与照明器注视跟踪
公开(公告)号：US08220926B2
公开(公告)日：2012-07-17
申请号：US12750967
申请日：2010-03-31
申请人： Peter Blixt , Anders Hoglund , Bengt Rehnstrom , John Elvesjö
发明人： Peter Blixt , Anders Hoglund , Bengt Rehnstrom , John Elvesjö
IPC分类号： A61B3/14 , A61B3/00
CPC分类号： G06F3/013 , A61B3/113 , G01S17/46 , G01S17/66 , G06F3/01 , G06K9/00604
摘要： A visual display characterized by hidden reference illuminators is adapted to emit invisible light for generating corneo-scleral reflections on an eye watching a screen surface of the display. The tracking of such reflections and the pupil center provides input for gaze tracking. A method for equipping and an LCD with a reference illuminator are also provided. A system and method for determining a gaze point of an eye watching a visual display comprising reference illuminators are further provided. The determination of the gaze point may be based on an ellipsoidal cornea model.
摘要翻译：特征在于隐藏参考照明器的视觉显示器适于发射不可见的光，以在观看显示器的屏幕表面的眼睛上产生角膜巩膜反射。跟踪这种反射和瞳孔中心为注视跟踪提供输入。还提供了一种用于装备的方法和具有参考照明器的LCD。还提供了一种用于确定观看包括参考照明器的视觉显示器的眼睛的凝视点的系统和方法。注视点的确定可以基于椭圆形角膜模型。

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