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1. 发明授权

US07217911B2 Solid state light detector 有权
标题翻译：固态光检测器
公开(公告)号：US07217911B2
公开(公告)日：2007-05-15
申请号：US11130193
申请日：2005-05-17
申请人： David John Edwards , Dominic Christopher O'Brien , Grahame Edward Faulkner , David Michael Holburn , Robert Joseph Mears
发明人： David John Edwards , Dominic Christopher O'Brien , Grahame Edward Faulkner , David Michael Holburn , Robert Joseph Mears
IPC分类号： H01L27/00 , G01J1/42 , H01J40/14
CPC分类号： H04B10/114 , H04B10/1149
摘要： An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavity light emitting diodes integrated using flip-chip technology with a CMOS driver circuit. The driver circuit includes constant bias, current peaking and charge extraction. The driver circuitry is compact and can be confined within a region underlying the corresponding light source. The detector array consists of an array of photo diodes, provided with sense circuitry consisting of a pre-amplifier and post-amplifier. The diodes and sense circuitry are also integrated using a flip-chip technique. The light emitter and the detector may include adaptive optical elements to steer and/or focus the light beams.
摘要翻译：一种使用视线光链路的光无线局域网。基站和终端设置有光收发器，其包括发射机阵列和检测器阵列。发射器阵列由使用倒装芯片技术与CMOS驱动器电路集成的谐振腔发光二极管阵列组成。驱动电路包括恒定偏置，电流峰化和电荷抽取。驱动器电路紧凑，并且可以限制在相应光源下面的区域内。检测器阵列由一组光电二极管组成，具有由前置放大器和后置放大器组成的感测电路。二极管和感测电路也使用倒装芯片技术集成。光发射器和检测器可以包括用于引导和/或聚焦光束的自适应光学元件。

2. 发明授权

US06914266B2 Optical wireless communications 有权
标题翻译：光无线通信
公开(公告)号：US06914266B2
公开(公告)日：2005-07-05
申请号：US10399326
申请日：2001-10-17
申请人： David John Edwards , Dominic Christopher O'Brien , Grahame Edward Faulkner , David Michael Holburn , Robert Joseph Mears
发明人： David John Edwards , Dominic Christopher O'Brien , Grahame Edward Faulkner , David Michael Holburn , Robert Joseph Mears
IPC分类号： H01L31/12 , H04B10/114 , H01L33/00 , H01L31/00
CPC分类号： H04B10/114 , H04B10/1149
摘要： An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavity light emitting diodes integrated using flip-chip technology with a CMOS driver circuit. The driver circuit includes constant bias, current peaking and charge extraction. The driver circuitry is compact and can be confined within a region underlying the corresponding light source. The detector array consists of an array of photo diodes, provided with sense circuitry consisting of a pre-amplifier and post-amplifier. The diodes and senses circuitry are also integrated using a flig-chip technique. The light emitter and the detector may include adaptive optical elements to steer and/or focus the light beams.
摘要翻译：一种使用视线光链路的光无线局域网。基站和终端设置有光收发器，其包括发射机阵列和检测器阵列。发射器阵列由使用倒装芯片技术与CMOS驱动器电路集成的谐振腔发光二极管阵列组成。驱动电路包括恒定偏置，电流峰化和电荷抽取。驱动器电路紧凑，并且可以限制在相应光源下面的区域内。检测器阵列由一组光电二极管组成，具有由前置放大器和后置放大器组成的感测电路。二极管和感应电路也使用flig-chip技术进行集成。光发射器和检测器可以包括用于引导和/或聚焦光束的自适应光学元件。

3. 发明授权

US07577364B2 Optical wireless communications 有权
标题翻译：光无线通信
公开(公告)号：US07577364B2
公开(公告)日：2009-08-18
申请号：US11130192
申请日：2005-05-17
申请人： David John Edwards , Dominic Christopher O'Brien , Grahame Edward Faulkner , David Michael Holburn , Robert Joseph Mears
发明人： David John Edwards , Dominic Christopher O'Brien , Grahame Edward Faulkner , David Michael Holburn , Robert Joseph Mears
IPC分类号： H04B10/00
CPC分类号： H04B10/114 , H04B10/1149
摘要： An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavity light emitting diodes integrated using flip-chip technology with a CMOS driver circuit. The driver circuit includes constant bias, current peaking and charge extraction. The driver circuitry is compact and can be confined within a region underlying the corresponding light source. The detector array consists of an array of photo diodes, provided with sense circuitry consisting of a pre-amplifier and post-amplifier. The diodes and sense circuitry are also integrated using a flip-chip technique. The light emitter and the detector may include adaptive optical elements to steer and/or focus the light beams.
摘要翻译：一种使用视线光链路的光无线局域网。基站和终端设置有光收发器，其包括发射机阵列和检测器阵列。发射器阵列由使用倒装芯片技术与CMOS驱动器电路集成的谐振腔发光二极管阵列组成。驱动电路包括恒定偏置，电流峰化和电荷抽取。驱动器电路紧凑，并且可以限制在相应光源下面的区域内。检测器阵列由一组光电二极管组成，具有由前置放大器和后置放大器组成的感测电路。二极管和感测电路也使用倒装芯片技术集成。光发射器和检测器可以包括用于引导和/或聚焦光束的自适应光学元件。

4. 发明授权

US06721539B1 Communications device retroreflecting incident modulated radiation 有权
标题翻译：通信装置回射事件调制辐射
公开(公告)号：US06721539B1
公开(公告)日：2004-04-13
申请号：US09700279
申请日：2001-01-05
申请人： Dominic C O'Brien , David John Edwards , Stephen J Sheard , Grahame Edward Faulkner
发明人： Dominic C O'Brien , David John Edwards , Stephen J Sheard , Grahame Edward Faulkner
IPC分类号： H04B500
CPC分类号： G02F1/19 , G02B26/02 , H04B10/2587
摘要： A communications device such as a personal identity card is in the form of a badge or label worn on the outside of the wearer's clothing. The badge includes a first layer of a transparent material having an inner surface that is contoured with a retroreflecting repeating pattern. A second layer also of a transparent material has an inner surface with a reciprocating retroreflecting pattern. Sandwiched between the two layers is a layer of liquid crystal material the refractive index of which can be varied through the application of an electric field. When the refractive index of the layer is close to that of the first and second layers, incident radiation passes through the device with little scattering. However, as the refractive index of the layer is varied by application of an electric field, incident radiation is retroreflected from the contoured interface of the first layer with the layer. The communications device is capable of retroreflecting incident radiation and modulating the radiation, by altering the refractive index of the layer, so that the reflected beam is capable of delivering information to a receiver. In this way information can be delivered in a non-contact environment using a device that requires very little power to operate.
摘要翻译：诸如个人身份证之类的通信设备是穿在穿着者服装外侧的徽章或标签的形式。徽章包括透明材料的第一层，其具有轮廓与回射重复图案的内表面。第二层也是透明材料，具有往复回射图案的内表面。在两层之间夹层是一层液晶材料，其折射率可以通过施加电场而变化。当层的折射率接近于第一和第二层的折射率时，入射的辐射几乎没有散射通过该装置。然而，由于通过施加电场来改变层的折射率，入射的辐射从第一层的轮廓界面与层反射回来。通信设备能够通过改变层的折射率来回射入射辐射和调制辐射，使得反射光束能够向接收器传送信息。以这种方式，信息可以在非接触环境中使用需要很少功率的设备来传送。

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