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1. 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。

2. 发明授权

US07756170B2 Frequency modulation in the optical alignment of wavelength-converted laser sources 失效
标题翻译：波长转换激光源的光学对准中的频率调制
公开(公告)号：US07756170B2
公开(公告)日：2010-07-13
申请号：US11880386
申请日：2007-07-20
申请人： Etienne Almoric , Vikram Bhatia , Jacques Gollier , Dragan Pikula , Daniel Ohen Ricketts
发明人： Etienne Almoric , Vikram Bhatia , Jacques Gollier , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13
CPC分类号： H01S5/0622 , G02F1/377 , G02F2001/3546 , H01S5/0687
摘要： Methods of controlling semiconductor lasers are provided where the semiconductor laser generates a wavelength-modulated output beam λMOD that is directed towards the input face of a wavelength conversion device. The intensity of a wavelength-converted output λCONV of the device is monitored as the output beam of the laser is modulated and as the position of the modulated output beam λMOD on the input face of the wavelength conversion device is varied. A maximum value of the monitored intensity is correlated with optimum coordinates representing the position of the modulated output beam λMOD on the input face of the wavelength conversion device. The optical package is operated in the data projection mode by directing an intensity-modulated laser beam from the semiconductor laser to the wavelength conversion device using the optimum positional coordinates. Additional embodiments are disclosed and claimed. Laser controllers and projections systems are also provided.
摘要翻译：提供了控制半导体激光器的方法，其中半导体激光器产生指向波长转换器件的输入面的波长调制输出光束λMOD。当激光器的输出光束被调制并且随着波长转换器件的输入面上调制的输出光束λMOD的位置变化时，监视器件的波长转换输出λCONV的强度。监视强度的最大值与表示波长转换装置的输入面上调制输出光束λMOD的位置的最佳坐标相关。通过使用最佳位置坐标将来自半导体激光器的强度调制激光束引导到波长转换装置，以数据投影模式操作光学封装。公开并要求保护附加实施例。还提供激光控制器和投影系统。

3. 发明申请

US20100098116A1 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：US20100098116A1
公开(公告)日：2010-04-22
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： H01S3/11 , H01S3/00 , H01S3/04
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。

4. 发明申请

US20090022188A1 Frequency modulation in the optical alignment of wavelength-converted laser sources 失效
标题翻译：波长转换激光源的光学对准中的频率调制
公开(公告)号：US20090022188A1
公开(公告)日：2009-01-22
申请号：US11880386
申请日：2007-07-20
申请人： Etienne Almoric , Vikram Bhatia , Jacques Gollier , Dragan Pikula , Daniel Ohen Ricketts
发明人： Etienne Almoric , Vikram Bhatia , Jacques Gollier , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： G02F1/37 , G02F1/35
CPC分类号： H01S5/0622 , G02F1/377 , G02F2001/3546 , H01S5/0687
摘要： Methods of controlling semiconductor lasers are provided where the semiconductor laser generates a wavelength-modulated output beam λMOD that is directed towards the input face of a wavelength conversion device. The intensity of a wavelength-converted output λCONV of the device is monitored as the output beam of the laser is modulated and as the position of the modulated output beam λMOD on the input face of the wavelength conversion device is varied. A maximum value of the monitored intensity is correlated with optimum coordinates representing the position of the modulated output beam λMOD on the input face of the wavelength conversion device. The optical package is operated in the data projection mode by directing an intensity-modulated laser beam from the semiconductor laser to the wavelength conversion device using the optimum positional coordinates. Additional embodiments are disclosed and claimed. Laser controllers and projections systems are also provided.
摘要翻译：提供了控制半导体激光器的方法，其中半导体激光器产生指向波长转换器件的输入面的波长调制输出光束λMOD。当激光器的输出光束被调制并且随着波长转换装置的输入面上调制的输出光束λMOD的位置变化时，监视器件的波长转换输出λCONV的强度。所监视的强度的最大值与表示波长转换装置的输入面上调制的输出光束λMOD的位置的最佳坐标相关。通过使用最佳位置坐标将来自半导体激光器的强度调制激光束引导到波长转换装置，以数据投影模式操作光学封装。公开并要求保护附加实施例。还提供激光控制器和投影系统。

5. 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。

6. 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。

7. 发明授权

US07729397B1 Multi-variable control methods for optical packages 失效
标题翻译：光学封装的多变量控制方法
公开(公告)号：US07729397B1
公开(公告)日：2010-06-01
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： H01S3/13
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。

8. 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。

9. 发明申请

US20080089373A1 WAVELENGTH CONTROL IN SEMICONDUCTOR LASERS 有权
标题翻译：半导体激光器的波长控制
公开(公告)号：US20080089373A1
公开(公告)日：2008-04-17
申请号：US11549856
申请日：2006-10-16
申请人： Vikram Bhatia , Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Daniel Ohen Ricketts , Chung-En Zah
发明人： Vikram Bhatia , Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Daniel Ohen Ricketts , Chung-En Zah
IPC分类号： H01S3/00
CPC分类号： H04N9/3129
摘要： The present invention relates generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling wavelength in semiconductor lasers. According to one embodiment of the present invention, a method of minimizing laser wavelength variations in a semiconductor laser is provided. According to the method, one or more of the laser drive currents is configured to comprise a drive portion and a wavelength recovery portion. The wavelength recovery portion of the drive current comprises a recovery amplitude IR that is distinct from the drive amplitude ID and a recovery duration tR that is less than the drive duration tD. The recovery amplitude IR and duration tR are sufficient to recover carrier density distribution distorted by gain compression effects prior to recovery. 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扫描系统，更具体地，涉及用于控制半导体激光器中的波长的方案。根据本发明的一个实施例，提供了一种使半导体激光器中的激光波长变化最小化的方法。根据该方法，一个或多个激光驱动电流被配置为包括驱动部分和波长恢复部分。驱动电流的波长恢复部分包括不同于驱动振幅I SUB和恢复持续时间t R的恢复幅度I SUB，这小于驱动持续时间t D D。恢复振幅I R和持续时间t R N足以恢复在恢复之前由增益压缩效应失真的载流子密度分布。公开并要求保护附加实施例。

10. 发明授权

US07483458B2 Wavelength control in semiconductor lasers 有权
标题翻译：半导体激光器中的波长控制
公开(公告)号：US07483458B2
公开(公告)日：2009-01-27
申请号：US11549856
申请日：2006-10-16
申请人： Vikram Bhatia , Jacques Gollier , Martin H. Hu , David A. Loeber , Daniel Ohen Ricketts , Chung-En Zah
发明人： Vikram Bhatia , Jacques Gollier , Martin H. Hu , David A. Loeber , Daniel Ohen Ricketts , Chung-En Zah
IPC分类号： H01S3/00
CPC分类号： H04N9/3129
摘要： The present invention relates generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling wavelength in semiconductor lasers. According to one embodiment of the present invention, a method of minimizing laser wavelength variations in a semiconductor laser is provided. According to the method, one or more of the laser drive currents is configured to comprise a drive portion and a wavelength recovery portion. The wavelength recovery portion of the drive current comprises a recovery amplitude IR that is distinct from the drive amplitude ID and a recovery duration tR that is less than the drive duration tD. The recovery amplitude IR and duration tR are sufficient to recover carrier density distribution distorted by gain compression effects prior to recovery. 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扫描系统，更具体地，涉及用于控制半导体激光器中的波长的方案。根据本发明的一个实施例，提供了一种使半导体激光器中的激光波长变化最小化的方法。根据该方法，一个或多个激光驱动电流被配置为包括驱动部分和波长恢复部分。驱动电流的波长恢复部分包括与驱动振幅ID不同的恢复幅度IR和小于驱动持续时间tD的恢复持续时间tR。恢复幅度IR和持续时间tR足以恢复在恢复之前由增益压缩效应失真的载流子密度分布。公开并要求保护附加实施例。

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