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1. 发明授权

US4010345A Gas delivery means for cutting with laser radiation 失效
标题翻译：气体输送手段，用于切割激光辐射
公开(公告)号：US4010345A
公开(公告)日：1977-03-01
申请号：US574132
申请日：1975-05-02
申请人： Conrad M. Banas , Aristotle Parasco
发明人： Conrad M. Banas , Aristotle Parasco
IPC分类号： B08B15/04 , B23K26/14 , B23K26/36 , B23K35/22 , B23K27/00
CPC分类号： B23K26/1494 , B08B15/04 , B23K26/142 , B23K26/1438 , B23K26/147 , B23K26/364 , B23K35/228
摘要： Gas delivery means for providing a flow of gas to the kerf in a workpiece which is being cut by a beam of laser radiation is disclosed. The distribution means consists of a thin wafer which is placed in the path of the cutting beam adjacent to the workpiece and a stream of gas directed along the axis of laser propagation blows the kerf clean. An upper gas port and a lower gas port allow the laser radiation to pass through the wafer without any transmissive optics. Use of the gas delivery means with various gases at high pressure and with laser beams at power levels which were previously impractical are discussed.

2. 发明授权

US5530221A Apparatus for temperature controlled laser sintering 失效
标题翻译：用于温度控制激光烧结的装置
公开(公告)号：US5530221A
公开(公告)日：1996-06-25
申请号：US316707
申请日：1994-09-30
申请人： John A. Benda , Aristotle Parasco
发明人： John A. Benda , Aristotle Parasco
IPC分类号： B23K26/00 , B22F3/10 , B22F3/105 , B29C35/02 , B29C67/00 , B22F1/00
CPC分类号： B29C67/0077 , B22F3/1055 , B22F2003/1057 , B29C35/0288 , Y02P10/295
摘要： A temperature-controlled laser sintering system includes a laser beam 12 which is focussed onto a sintering bed 38 by a focussing mirror 26 and a set of scanning mirrors 32, 34. Thermal radiation 114 emitted from the sintering bed 38 are imaged to the scanning mirrors and to a dichroic beamsplitter 110 which reflects such radiation but passes the wavelength of the laser beam 12. The radiation 118 is focussed onto an optical detector 126 which provides a signal on a line 128 to a power control circuit 104. The power control circuit 104 controls a modulator 100 which modulates the power of the laser beam 112 so as to maintain the thermal radiation emission 114 (and thus the temperature at the sintering location) at a substantially constant level.
摘要翻译：温度控制的激光烧结系统包括通过聚焦反射镜26和一组扫描反射镜32,34聚焦在烧结床38上的激光束12.从烧结床38发射的热辐射114被成像到扫描反射镜以及反射这种辐射但通过激光束12的波长的二向色分束器110.辐射118被聚焦到光检测器126上，光检测器126在线128上向功率控制电路104提供信号。功率控制电路104 控制调制器100，其调制激光束112的功率，以便将热辐射发射114（并且因此在烧结位置处的温度）保持在基本恒定的水平。

3. 发明授权

US5427733A Method for performing temperature-controlled laser sintering 失效
标题翻译：进行温度控制激光烧结的方法
公开(公告)号：US5427733A
公开(公告)日：1995-06-27
申请号：US139392
申请日：1993-10-20
申请人： John A. Benda , Aristotle Parasco
发明人： John A. Benda , Aristotle Parasco
IPC分类号： B23K26/00 , B22F3/10 , B22F3/105 , B29C35/02 , B29C67/00 , B22F1/00 , B29C39/00
CPC分类号： B29C67/0077 , B22F3/1055 , B22F2003/1057 , B29C35/0288 , Y02P10/295
摘要： A temperature-controlled laser sintering system includes a laser beam 12 which is focussed onto a sintering bed 38 by a focussing mirror 26 and a set of scanning mirrors 32,34. Thermal radiation 114 emitted from the sintering bed 38 are imaged to the scanning mirrors and to a dichroic beamsplitter 110 which reflects such radiation but passes the wavelength of the laser beam 12. The radiation 118 is focussed onto an optical detector 126 which provides a signal on a line 128 to a power control circuit 104. The power control circuit 104 controls a modulator 100 which modulates the power of the laser beam 112 so as to maintain the thermal radiation emission 114 (and thus the temperature at the sintering location) at a substantially constant level.
摘要翻译：温度控制的激光烧结系统包括通过聚焦镜26和一组扫描镜32,34聚焦在烧结床38上的激光束12。从烧结床38发射的热辐射114被成像到扫描镜和反射这种辐射但通过激光束12的波长的二向色分束器110.辐射118聚焦到光学检测器126上，该光学检测器126提供信号线路128到功率控制电路104.功率控制电路104控制调制器100，其调制激光束112的功率，以便将热辐射发射114（并且因此在烧结位置处的温度）保持在基本上恒定水平。

4. 发明授权

US6007764A Absorption tailored laser sintering 失效
标题翻译：吸收定制激光烧结
公开(公告)号：US6007764A
公开(公告)日：1999-12-28
申请号：US49408
申请日：1998-03-27
申请人： John A. Benda , Aristotle Parasco
发明人： John A. Benda , Aristotle Parasco
IPC分类号： B22F3/105 , B29C67/00 , B22F3/10 , B22F7/02 , B29C69/02 , B29C71/04
CPC分类号： B29C67/0077 , B22F3/1055 , B22F2003/1052 , B22F2999/00 , B29K2995/0025 , B29K2995/0026 , Y02P10/295
摘要： The present invention is a method which customizes the penetration depth of a heat-fusible powder used in solid freeform fabrication process such as laser sintering. The penetration depth of the heat-fusible powder is customized by combining opaque and transparent powders at a ratio which ensures that the beam contacts a portion of powder beneath its surface, thereby promoting complete layer sintering as well as adherence to previously sintered layers.
摘要翻译：本发明是定制用于固体自由形成制造工艺（例如激光烧结）中的热熔粉末的穿透深度的方法。热熔粉末的穿透深度通过将不透明和透明粉末以一定比例组合的比例来定制，该比例确保了梁与其表面下方的一部分粉末接触，从而促进完全层烧结以及粘附到先前烧结的层。

5. 发明授权

US5393482A Method for performing multiple beam laser sintering employing focussed and defocussed laser beams 失效
标题翻译：使用聚焦和去焦化激光束进行多光束激光烧结的方法
公开(公告)号：US5393482A
公开(公告)日：1995-02-28
申请号：US139375
申请日：1993-10-20
申请人： John A. Benda , Aristotle Parasco
发明人： John A. Benda , Aristotle Parasco
IPC分类号： B23K26/00 , B22F3/10 , B22F3/105 , B23K26/34 , B29C67/00 , B22F3/00 , H05B1/00
CPC分类号： B29C67/0077 , B22F3/1055 , Y02P10/295
摘要： A multiple beam laser sintering device includes a sintering beam 64 having a focal point at a powder bed 68 and at least one defocussed laser beam 116 incident on a region near the focal point of the focussed beam 64. The sintering beam 64 raises the temperature of the powder 84 to the sintering temperature. The defocussed beam 116 raises the temperature of the material surrounding the sintering beam 64 to a level below the sintering temperature, thereby reducing the temperature gradient between the sintering location and the surrounding material. Thermal radiation may be measured from one or both beams and used to control the power of one or both beams and the power of one or both beams may be controlled to maintain the temperature at a desired level. Alternatively, a plurality of defocussed beams may be used to provide either a plurality of thermal gradient steps, or to control the temperature of each region around the sintering point independently.
摘要翻译：多光束激光烧结装置包括：烧结光束64，其具有在粉末床68处的焦点和入射在聚焦光束64的焦点附近的区域中的至少一个去焦化的激光束116.烧结光束64升高温度粉末84至烧结温度。散焦光束116将烧结梁64周围的材料的温度升高到低于烧结温度的水平，从而降低烧结位置和周围材料之间的温度梯度。可以从一个或两个光束测量热辐射，并且用于控制一个或两个光束的功率，并且可以控制一个或两个光束的功率以将温度保持在期望的水平。或者，可以使用多个散焦光束来提供多个热梯度步骤，或者独立地控制烧结点周围的每个区域的温度。

6. 发明申请

US20050217321A1 Long period fiber Bragg gratings written with alternate side IR laser illumination 有权
标题翻译：长周期光纤布拉格光栅用备用侧面红外激光照明写入
公开(公告)号：US20050217321A1
公开(公告)日：2005-10-06
申请号：US11133593
申请日：2005-05-20
申请人： John Benda , Aristotle Parasco
发明人： John Benda , Aristotle Parasco
IPC分类号： G02B6/02 , G02B6/34 , C03B37/15
CPC分类号： G02B6/02066 , G02B6/29352 , G02B6/29356
摘要： A method of optical fiber manufacture involves the writing of a grating on the fiber using a laser. A first laser beam is directed on a first locality of the fiber having a circumference. A second laser beam is then directed on a second locality circumferentially displaced from the first locality. The first laser beam may be the second laser beam. In this way, a grating is formed on the fiber. The fiber may have a core and a cladding layer. The fiber may also comprise two gratings to form an interferometer.
摘要翻译：光纤制造方法涉及使用激光在光纤上写入光栅。第一激光束被引导到具有圆周的纤维的第一部分。然后将第二激光束引导到从第一位置周向移位的第二位置。第一激光束可以是第二激光束。以这种方式，在光纤上形成光栅。纤维可以具有芯和包层。光纤还可以包括两个光栅以形成干涉仪。

7. 发明授权

US5179563A Linear polarization control of high power lasers 失效
标题翻译：高功率激光器的线偏振控制
公开(公告)号：US5179563A
公开(公告)日：1993-01-12
申请号：US781427
申请日：1991-10-23
申请人： Gary E. Palma , Sallie S. Townsend , Aristotle Parasco , John A. Benda
发明人： Gary E. Palma , Sallie S. Townsend , Aristotle Parasco , John A. Benda
IPC分类号： H01S3/081 , H01S3/139
CPC分类号： H01S3/0818 , H01S3/139
摘要： An unstable laser resonator is controlled in polarization by the use of a control leg coupled to the parent resonator and having a polarization control element therein, so that control of a low power beam in said control leg serves to control the polarization of the parent resonator.
摘要翻译：不稳定的激光谐振器通过使用耦合到母谐振器并且在其中具有偏振控制元件的控制支路在极化中控制，使得所述控制支路中的低功率光束的控制用于控制母谐振器的极化。

8. 发明授权

US07946137B2 Long period fiber Bragg gratings written with alternate side IR laser illumination 有权
标题翻译：长周期光纤布拉格光栅用备用侧面红外激光照明写入
公开(公告)号：US07946137B2
公开(公告)日：2011-05-24
申请号：US11133593
申请日：2005-05-20
申请人： John A. Benda , Aristotle Parasco
发明人： John A. Benda , Aristotle Parasco
IPC分类号： C03B37/10
CPC分类号： G02B6/02066 , G02B6/29352 , G02B6/29356
摘要： A method of optical fiber manufacture involves the writing of a grating on the fiber using a laser. A first laser beam is directed on a first locality of the fiber having a circumference. A second laser beam is then directed on a second locality circumferentially displaced from the first locality. The first laser beam may be the second laser beam. In this way, a grating is formed on the fiber. The fiber may have a core and a cladding layer. The fiber may also comprise two gratings to form an interferometer.
摘要翻译：光纤制造方法涉及使用激光在光纤上写入光栅。第一激光束被引导到具有圆周的纤维的第一部分。然后将第二激光束引导到从第一位置周向移位的第二位置。第一激光束可以是第二激光束。以这种方式，在光纤上形成光栅。纤维可以具有芯和包层。光纤还可以包括两个光栅以形成干涉仪。

9. 发明申请

US20050204779A1 Long period fiber bragg gratings written with alternate side IR laser illumination 审中-公开
标题翻译：长周期光纤布拉格光栅用备用侧面红外激光照明写入
公开(公告)号：US20050204779A1
公开(公告)日：2005-09-22
申请号：US11133520
申请日：2005-05-20
申请人： John Benda , Aristotle Parasco
发明人： John Benda , Aristotle Parasco
IPC分类号： G02B6/02 , G02B6/34 , C03B37/018
CPC分类号： G02B6/02066 , G02B6/29352 , G02B6/29356
摘要： A method of optical fiber manufacture involves the writing of a grating on the fiber using a laser. A first laser beam is directed on a first locality of the fiber having a circumference. A second laser beam is then directed on a second locality circumferentially displaced from the first locality. The first laser beam may be the second laser beam. In this way, a grating is formed on the fiber. The fiber may have a core and a cladding layer. The fiber may also comprise two gratings to form an interferometer.
摘要翻译：光纤制造方法涉及使用激光在光纤上写入光栅。第一激光束被引导到具有圆周的纤维的第一部分。然后将第二激光束引导到从第一位置周向移位的第二位置。第一激光束可以是第二激光束。以这种方式，在光纤上形成光栅。纤维可以具有芯和包层。光纤还可以包括两个光栅以形成干涉仪。

10. 发明授权

US5508489A Apparatus for multiple beam laser sintering 失效
标题翻译：多光束激光烧结装置
公开(公告)号：US5508489A
公开(公告)日：1996-04-16
申请号：US292125
申请日：1994-08-17
申请人： John A. Benda , Aristotle Parasco
发明人： John A. Benda , Aristotle Parasco
IPC分类号： B23K26/00 , B22F3/10 , B22F3/105 , B23K26/34 , B29C67/00
CPC分类号： B29C67/0077 , B22F3/1055 , Y02P10/295
摘要： A multiple beam laser sintering device includes a sintering beam 64 having a focal point at a powder bed 68 and at least one defocussed laser beam 116 incident on a region near the focal point of the focussed beam 64. The sintering beam 64 raises the temperature of the powder 84 to the sintering temperature. The defocussed beam 116 raises the temperature of the material surrounding the sintering beam 64 to a level below the sintering temperature, thereby reducing the temperature gradient between the sintering location and the surrounding material. Thermal radiation may be measured from one or both beams and used to control the power of one or both beams and the power of one or both beams may be controlled to maintain the temperature at a desired level. Alternatively, a plurality of defocussed beams may be used to provide either a plurality of thermal gradient steps, or to control the temperature of each region around the sintering point independently.
摘要翻译：多光束激光烧结装置包括：烧结光束64，其具有在粉末床68处的焦点和入射在聚焦光束64的焦点附近的区域中的至少一个去焦化的激光束116.烧结光束64升高温度粉末84至烧结温度。散焦光束116将烧结梁64周围的材料的温度升高到低于烧结温度的水平，从而降低烧结位置和周围材料之间的温度梯度。可以从一个或两个光束测量热辐射，并且用于控制一个或两个光束的功率，并且可以控制一个或两个光束的功率以将温度保持在期望的水平。或者，可以使用多个散焦光束来提供多个热梯度步骤，或者独立地控制烧结点周围的每个区域的温度。

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