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1. 发明授权

US07769063B2 Correction of power variations in laser sources 失效
标题翻译：激光源功率变化的校正
公开(公告)号：US07769063B2
公开(公告)日：2010-08-03
申请号：US12257043
申请日：2008-10-23
申请人： Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
发明人： Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13
CPC分类号： H01S5/06832 , H01S5/0092 , H01S5/06256 , H04N9/3129
摘要： The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a method of correcting output power variations in a semiconductor laser is provided. According to the method, an output power feedback loop is utilized to generate optical intensity feedback signals representing actual output power of the laser source for discrete portions V1, Vi, . . . Vj of the image signal. Error signals E1, Ei, . . . Ej are generated representing the degree to which actual projected output power varies from a target projected output power for the discrete portions V1, Vi, . . . Vj of the image signal. These error signals E1, Ei, . . . Ej are utilized to apply corrected control signals G1′, Gi′, . . . Gj′ to the gain section of the semiconductor laser for projection of compatible discrete portions V1′, Vi′, . . . Vj′ of the image signal. According to another embodiment of the present invention, a system is provided for generating a projected laser image.
摘要翻译：本发明一般涉及半导体激光器和激光投射系统。根据本发明的一个实施例，提供了一种校正半导体激光器中的输出功率变化的方法。根据该方法，使用输出功率反馈回路来产生代表离散部分V1，Vi的激光源的实际输出功率的光强度反馈信号。。。 Vj的图像信号。错误信号E1，Ei，。。。产生Ej，表示实际投影输出功率与离散部分V1，Vi的目标投影输出功率变化的程度。。。 Vj的图像信号。这些误差信号E1，Ei，...。。。使用Ej来应用校正控制信号G1'，Gi'。。。 Gj'到半导体激光器的增益部分，用于投射相容的离散部分V1'，Vi'。。。 Vj'。根据本发明的另一个实施例，提供了一种用于产生投影激光图像的系统。

2. 发明申请

US20100103967A1 CORRECTION OF POWER VARIATIONS IN LASER SOURCES 失效
标题翻译：激光源中功率变化的校正
公开(公告)号：US20100103967A1
公开(公告)日：2010-04-29
申请号：US12257043
申请日：2008-10-23
申请人： Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
发明人： Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13
CPC分类号： H01S5/06832 , H01S5/0092 , H01S5/06256 , H04N9/3129
摘要： The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a method of correcting output power variations in a semiconductor laser is provided. According to the method, an output power feedback loop is utilized to generate optical intensity feedback signals representing actual output power of the laser source for discrete portions V1, Vi, . . . Vj of the image signal. Error signals E1, Ei, . . . Ej are generated representing the degree to which actual projected output power varies from a target projected output power for the discrete portions V1, Vi, . . . Vj of the image signal. These error signals E1, Ei, . . . Ej are utilized to apply corrected control signals G1′, Gi′, . . . Gj′ to the gain section of the semiconductor laser for projection of compatible discrete portions V1′, Vi′, . . . Vj′ of the image signal. According to another embodiment of the present invention, a system is provided for generating a projected laser image.
摘要翻译：本发明一般涉及半导体激光器和激光投射系统。根据本发明的一个实施例，提供了一种校正半导体激光器中的输出功率变化的方法。根据该方法，使用输出功率反馈回路来产生代表离散部分V1，Vi的激光源的实际输出功率的光强度反馈信号。。。 Vj的图像信号。错误信号E1，Ei，。。。产生Ej，表示实际投影输出功率与离散部分V1，Vi的目标投影输出功率变化的程度。。。 Vj的图像信号。这些误差信号E1，Ei，...。。。使用Ej来应用校正控制信号G1'，Gi'。。。 Gj'到半导体激光器的增益部分，用于投射相容的离散部分V1'，Vi'。。。 Vj'。根据本发明的另一个实施例，提供了一种用于产生投影激光图像的系统。

3. 发明申请

US20100322272A1 Minimizing power variations in laser sources 审中-公开
标题翻译：最大限度地减少激光源的功率变化
公开(公告)号：US20100322272A1
公开(公告)日：2010-12-23
申请号：US12080852
申请日：2008-04-07
申请人： Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
发明人： Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13 , H01S5/12
CPC分类号： H01S5/06256 , H01S5/005 , H01S5/0092 , H01S5/0604 , H01S5/06251 , H01S5/0687 , H04N9/3129 , H04N9/3155
摘要： The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a projected laser image is generated utilizing an output beam of the semiconductor laser. A gain current control signal is generated by a gain current feedback loop to control the gain section of the semiconductor laser. Wavelength fluctuations of the semiconductor laser are narrowed by incorporating a wavelength recovery operation in a drive current of the semiconductor laser and by initiating the wavelength recovery operations as a function of the gain current control signal or an optical intensity error signal. Additional embodiments are disclosed and claimed.
摘要翻译：本发明一般涉及半导体激光器和激光投射系统。根据本发明的一个实施例，利用半导体激光器的输出光束产生投射的激光图像。增益电流控制信号由增益电流反馈回路产生，以控制半导体激光器的增益部分。通过在半导体激光器的驱动电流中并入波长恢复操作并且通过作为增益电流控制信号或光强度误差信号的函数启动波长恢复操作来使半导体激光器的波长波动变窄。公开并要求保护附加实施例。

4. 发明申请

US20100002736A1 Wavelength normalization in phase section of semiconductor lasers 失效
标题翻译：半导体激光器相段波长归一化
公开(公告)号：US20100002736A1
公开(公告)日：2010-01-07
申请号：US12217427
申请日：2008-07-03
申请人： Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
发明人： Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/10
CPC分类号： H01S5/06256 , G02F1/0147 , G02F1/03 , G02F1/37 , G02F2203/12 , G02F2203/50 , H01S5/0092 , H01S5/0612 , H01S5/06246 , H04N9/3129 , H04N9/3155
摘要： Particular embodiments of the present invention relate generally to semiconductor lasers and laser projections systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser having a gain section, a phase section and a wavelength selective section is configured for optical emission of encoded data. The optical emission is shifted across a plurality of laser cavity modes by applying a quasi-periodic phase shifting signal I/VΦ to the phase section of the semiconductor laser. The amplitude of the quasi-periodic signal transitions periodically between a maximum drive level and a minimum drive level at a frequency that varies randomly over time.
摘要翻译：本发明的具体实施方案一般涉及半导体激光器和激光投射系统，更具体地，涉及用于控制半导体激光器的方案。根据本发明的一个实施例，具有增益部分，相位部分和波长选择部分的激光器被配置用于光发射编码数据。通过对半导体激光器的相位部分施加准周期性移相信号I / VPhi，使光发射跨越多个激光腔模式。准周期信号的幅度在随时间变化的频率的最大驱动电平和最小驱动电平之间周期性地跳变。

5. 发明申请

US20090252187A1 Minimizing Power Variations In Laser Sources 审中-公开
标题翻译：最小化激光源的功率变化
公开(公告)号：US20090252187A1
公开(公告)日：2009-10-08
申请号：US12333967
申请日：2008-12-12
申请人： Anthony Sebastian Bauco , Douglas Llewellyn Butler , Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
发明人： Anthony Sebastian Bauco , Douglas Llewellyn Butler , Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13
CPC分类号： H01S5/06255 , H01S5/0092 , H01S5/06256 , H01S5/06835 , H01S5/0687 , H04N9/3129 , H04N9/3161
摘要： The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a projected laser image is generated utilizing an output beam of the semiconductor laser. A gain current control signal is generated by a laser feedback loop to control the gain section of the semiconductor laser. Wavelength fluctuations of the semiconductor laser are narrowed by incorporating a wavelength recovery operation in a drive current of the semiconductor laser and by initiating the wavelength recovery operations as a function of the gain current control signal or an optical intensity error signal. Additional embodiments are disclosed and claimed.
摘要翻译：本发明一般涉及半导体激光器和激光投射系统。根据本发明的一个实施例，利用半导体激光器的输出光束产生投射的激光图像。增益电流控制信号由激光反馈回路产生，以控制半导体激光器的增益部分。通过在半导体激光器的驱动电流中并入波长恢复操作并且通过作为增益电流控制信号或光强度误差信号的函数启动波长恢复操作来使半导体激光器的波长波动变窄。公开并要求保护附加实施例。

6. 发明授权

US08204091B2 Wavelength normalization in phase section of semiconductor lasers 失效
标题翻译：半导体激光器相段波长归一化
公开(公告)号：US08204091B2
公开(公告)日：2012-06-19
申请号：US12217427
申请日：2008-07-03
申请人： Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
发明人： Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13
CPC分类号： H01S5/06256 , G02F1/0147 , G02F1/03 , G02F1/37 , G02F2203/12 , G02F2203/50 , H01S5/0092 , H01S5/0612 , H01S5/06246 , H04N9/3129 , H04N9/3155
摘要： Particular embodiments of the present invention relate generally to semiconductor lasers and laser projections systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser having a gain section, a phase section and a wavelength selective section is configured for optical emission of encoded data. The optical emission is shifted across a plurality of laser cavity modes by applying a quasi-periodic phase shifting signal I/VΦ to the phase section of the semiconductor laser. The amplitude of the quasi-periodic signal transitions periodically between a maximum drive level and a minimum drive level at a frequency that varies randomly over time.
摘要翻译：本发明的具体实施方案一般涉及半导体激光器和激光投射系统，更具体地，涉及用于控制半导体激光器的方案。根据本发明的一个实施例，具有增益部分，相位部分和波长选择部分的激光器被配置用于光发射编码数据。通过对半导体激光器的相位部分施加准周期性移相信号I /VΦ，使光发射跨越多个激光腔模式。准周期信号的幅度在随时间变化的频率的最大驱动电平和最小驱动电平之间周期性地跳变。

7. 发明授权

US08045260B2 Optimized signal control in frequency-doubled laser sources 失效
标题翻译：在倍频激光源中优化信号控制
公开(公告)号：US08045260B2
公开(公告)日：2011-10-25
申请号：US12288639
申请日：2008-10-22
申请人： Vikram Bhatia , Jacques Gollier , Dragan Pikula , Daniel Ohen Ricketts
发明人： Vikram Bhatia , Jacques Gollier , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/136 , H01S3/131 , H01S3/10
CPC分类号： H01S5/06256 , H01S5/0092 , H01S5/06837 , H01S5/0687 , H04N9/3129 , H04N9/3188
摘要： The present disclosure relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present disclosure, a method of operating a laser projection system is provided. According to the method, the laser projection system is utilized to display a sequence of pixelized image frames comprising an alternating sequence of relatively high intensity active projection periods ModON and relatively low intensity inactive projection periods ModOFF. A complementary control signal transitions between an active state QON during the relatively high intensity active projection periods ModON and an inactive state QOFF during the relatively low intensity inactive projection periods ModOFF. The transition of the complementary control signal from the inactive state QOFF to the active state QON is conditioned to anticipate initiation of relatively high intensity active projection periods ModON such that it is optimized upon initiation of the relatively high intensity active projection periods ModON. Additional embodiments are disclosed and claimed.
摘要翻译：本公开一般涉及半导体激光器和激光投影系统。根据本公开的一个实施例，提供了一种操作激光投影系统的方法。根据该方法，激光投影系统用于显示包括相对高强度的活动投影周期ModON和相对低强度非活动投影周期ModOFF的交替序列的像素化图像帧序列。互补控制信号在相对高强度的有效投影周期ModON期间的活动状态QON和在相对低强度的非活动投影周期ModOFF期间的无效状态QOFF之间转变。补充控制信号从无效状态QOFF到活动状态QON的转变被调节以预期开始相对高强度的有效投影周期ModON，使得在相对高强度的活动投影周期ModON的开始时被优化。公开并要求保护附加实施例。

8. 发明授权

US08325332B2 Start-up methods for frequency converted light sources 失效
标题翻译：变频光源的启动方法
公开(公告)号：US08325332B2
公开(公告)日：2012-12-04
申请号：US12908117
申请日：2010-10-20
申请人： Garrett Andrew Piech , Dragan Pikula , Daniel Ohen Ricketts
发明人： Garrett Andrew Piech , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： G01B11/26
CPC分类号： H01S5/0092 , G02B6/4225 , G02F1/353 , H01S5/0014 , H01S5/06256 , H01S5/0687 , H01S5/4093
摘要： Start-up methods for frequency converted light sources and projector systems comprising frequency converted light sources are described herein. The start-up methods generally comprise modulating the frequency converted light source over three degrees of freedom (two spatial dimensions and one wavelength dimension). Specifically, fast oscillation of an axis of an adjustable optical component is performed simultaneously with fast oscillation of a wavelength of the semiconductor laser while a second axis of the adjustable optical component is incrementally stepped and the output intensity of the frequency converted light source is monitored for each step. This start-up method allows for three linear searches to be used to rapidly locate the appropriate control settings for the frequency converted light source.
摘要翻译：本文描述了包括频率转换光源的变频光源和投影仪系统的启动方法。启动方法通常包括在三个自由度（两个空间维度和一个波长尺寸）上调制频率转换的光源。具体地，可调节光学部件的轴的快速振荡与半导体激光器的波长的快速振荡同时进行，同时可调光学部件的第二轴增量阶梯，并且监视频率转换光源的输出强度每一步。该启动方法允许使用三个线性搜索来快速定位频率转换光源的适当控制设置。

9. 发明申请

US20120026488A1 Start-Up Methods for Frequency Converted Light Sources 失效
标题翻译：变频光源的启动方法
公开(公告)号：US20120026488A1
公开(公告)日：2012-02-02
申请号：US12908117
申请日：2010-10-20
申请人： Garrett Andrew Piech , Dragan Pikula , Daniel Ohen Ricketts
发明人： Garrett Andrew Piech , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： G01B11/26
CPC分类号： H01S5/0092 , G02B6/4225 , G02F1/353 , H01S5/0014 , H01S5/06256 , H01S5/0687 , H01S5/4093
摘要： Start-up methods for frequency converted light sources and projector systems comprising frequency converted light sources are described herein. The start-up methods generally comprise modulating the frequency converted light source over three degrees of freedom (two spatial dimensions and one wavelength dimension). Specifically, fast oscillation of an axis of an adjustable optical component is performed simultaneously with fast oscillation of a wavelength of the semiconductor laser while a second axis of the adjustable optical component is incrementally stepped and the output intensity of the frequency converted light source is monitored for each step. This start-up method allows for three linear searches to be used to rapidly locate the appropriate control settings for the frequency converted light source.
摘要翻译：本文描述了包括频率转换光源的变频光源和投影仪系统的启动方法。启动方法通常包括在三个自由度（两个空间维度和一个波长尺寸）上调制频率转换的光源。具体地，可调节光学部件的轴的快速振荡与半导体激光器的波长的快速振荡同时进行，同时可调光学部件的第二轴增量阶梯，并且监视频率转换光源的输出强度每一步。该启动方法允许使用三个线性搜索来快速定位频率转换光源的适当控制设置。

10. 发明申请

US20100150185A1 MULTI-VARIABLE CONTROL METHODS FOR OPTICAL PACKAGES 失效
标题翻译：用于光学包装的多变量控制方法
公开(公告)号：US20100150185A1
公开(公告)日：2010-06-17
申请号：US12335692
申请日：2008-12-16
申请人： Jacques Gollier , Garrett Andrew Piech , Dragan Pikula , Daniel Ohen Ricketts
发明人： Jacques Gollier , Garrett Andrew Piech , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/10
CPC分类号： H01S5/0683 , G02F1/35 , G02F1/3775 , H01S5/0092 , H01S5/06256 , H01S5/0687
摘要： According to one embodiment of the present invention, an optical package comprises one or more semiconductor lasers coupled to a wavelength conversion device with adaptive optics. The optical package also comprises a package controller programmed to operate the semiconductor laser and the adaptive optics based on modulated feedback control signals supplied to the wavelength selective section of the semiconductor laser and the adaptive optics. The wavelength control signal supplied to the wavelength selective section of the semiconductor laser may be adjusted based on the modulated wavelength feedback control signal such that the response parameter of the wavelength conversion device is optimized. Similarly, the position control signals supplied to the adaptive optics may be adjusted based on the modulated feedback position control signals such that the response parameter of the wavelength conversion device is optimized.
摘要翻译：根据本发明的一个实施例，光学封装包括耦合到具有自适应光学器件的波长转换器件的一个或多个半导体激光器。光学封装还包括编程为基于提供给半导体激光器和自适应光学器件的波长选择部分的调制反馈控制信号来操作半导体激光器和自适应光学器件的封装控制器。提供给半导体激光器的波长选择部分的波长控制信号可以基于调制的波长反馈控制信号进行调整，使得波长转换器件的响应参数被优化。类似地，可以基于调制的反馈位置控制信号来调整提供给自适应光学器件的位置控制信号，使得波长转换装置的响应参数被优化。

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