专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

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

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。

5. 发明申请

US20080089370A1 Wavelength control in wavelength selective, phase, and gain regions of semiconductor lasers 有权
公开(公告)号：US20080089370A1
公开(公告)日：2008-04-17
申请号：US11900761
申请日：2007-09-13
申请人： Vikram Bhatia , Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Daniel Ohen Ricketts
发明人： Vikram Bhatia , Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Daniel Ohen Ricketts
IPC分类号： H01S3/13
CPC分类号： H01S5/06256 , H01S5/0092 , H01S5/06246 , H01S5/06832 , H01S5/0687 , H04N9/3129
摘要： Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission is a function of a drive current IGAIN injected into the gain section of the semiconductor laser and one or more additional drive currents I/VPHASE, I/VDBR. Mode selection in the semiconductor laser is altered by perturbing at least one of the additional drive currents I/VPHASE, I/VDBR with a perturbation signal I/VPTRB to alter mode selection in the semiconductor laser such that a plurality of different emission modes are selected in the semiconductor laser over a target emission period. In this manner, patterned variations in the wavelength or intensity profile of the laser can be disrupted to disguise patterned flaws that would otherwise be readily noticeable in the output of the laser.

6. 发明授权

US07420997B2 Wavelength control in wavelength selective, phase, and gain regions of semiconductor lasers 有权
标题翻译：半导体激光器的波长选择，相位和增益区域的波长控制
公开(公告)号：US07420997B2
公开(公告)日：2008-09-02
申请号：US11900761
申请日：2007-09-13
申请人： Vikram Bhatia , Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Daniel Ohen Ricketts
发明人： Vikram Bhatia , Jacques Gollier , Martin Hai Hu , David August Sniezek Loeber , Daniel Ohen Ricketts
IPC分类号： H01S3/00
CPC分类号： H01S5/06256 , H01S5/0092 , H01S5/06246 , H01S5/06832 , H01S5/0687 , H04N9/3129
摘要： Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission is a function of a drive current IGAIN injected into the gain section of the semiconductor laser and one or more additional drive currents I/VPHASE, I/VDBR. Mode selection in the semiconductor laser is altered by perturbing at least one of the additional drive currents I/VPHASE, I/VDBR with a perturbation signal I/VPTRB to alter mode selection in the semiconductor laser such that a plurality of different emission modes are selected in the semiconductor laser over a target emission period. In this manner, patterned variations in the wavelength or intensity profile of the laser can be disrupted to disguise patterned flaws that would otherwise be readily noticeable in the output of the laser.
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扫描系统，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，激光器被配置用于光发射编码数据。光发射的至少一个参数是注入到半导体激光器的增益部分中的驱动电流I GAIN 和一个或多个附加驱动电流I / V相位的函数 >，I / V DBR 。通过用扰动信号I / V 中的至少一个来改变半导体激光器中的模式选择 > PTRB 以改变半导体激光器中的模式选择，使得在目标发射周期内在半导体激光器中选择多个不同的发射模式。以这种方式，可以破坏激光器的波长或强度分布的图案变化来伪装图案化的缺陷，否则在激光器的输出中将容易看出。

7. 发明申请

US20080063016A1 Thermal compensation in semiconductor lasers 审中-公开
标题翻译：半导体激光器的热补偿
公开(公告)号：US20080063016A1
公开(公告)日：2008-03-13
申请号：US11520223
申请日：2006-09-13
申请人： Vikram Bhatia , Martin Hai Hu , Xingsheng Liu , David August Sniezek Loeber , Daniel Ohen Ricketts , Chung-En Zah
发明人： Vikram Bhatia , Martin Hai Hu , Xingsheng Liu , David August Sniezek Loeber , Daniel Ohen Ricketts , Chung-En Zah
IPC分类号： H01S3/04
CPC分类号： H01S5/0261 , H01S5/024 , H01S5/0425 , H01S5/0612 , H01S5/06213 , H01S5/06251 , H01S5/06256 , H01S5/22 , H01S5/2231
摘要： The present invention relates to methods for modulating a semiconductor laser and wavelength matching to a wavelength converter using monolithic micro-heaters integrated in the semiconductor laser. The present invention also relates to wavelength matching and stabilization in laser sources in general, without regard to whether the laser is modulated or whether second harmonic generation is utilized in the laser source. According to one embodiment of the present invention, a method of compensating for thermally induced patterning effects in a semiconductor laser is provided where the laser's heating element driving current IH is set to a relatively high magnitude when the laser's driving current ID is at a relatively low magnitude. Additional embodiments are disclosed and claimed.
摘要翻译：本发明涉及使用集成在半导体激光器中的单块微型加热器来调制半导体激光器和波长转换器的波长匹配的方法。本发明通常也涉及激光源中的波长匹配和稳定化，而不考虑激光是否被调制，或者是否在激光源中使用二次谐波产生。根据本发明的一个实施例，提供了一种补偿半导体激光器中的热诱导图案化效应的方法，其中激光器的加热元件驱动电流I H H被设置为相对高的幅度，驱动电流I SUB D具有相对低的幅度。公开并要求保护附加实施例。

8. 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。

9. 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。

10. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式