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    Apparatus for delivering a laser beam
    2.
    发明授权
    Apparatus for delivering a laser beam 失效
    用于传送激光束的装置

    公开(公告)号：US5312398A

    公开(公告)日：1994-05-17

    申请号：US867895

    申请日：1992-04-13

    申请人： James L. Hobart ,  David Trost

    发明人： James L. Hobart ,  David Trost

    IPC分类号： A61B18/20 ,  G02B17/06 ,  A61B17/36 ,  A61B17/24

    CPC分类号： A61B18/201 ,  G02B19/0023 ,  G02B19/0033 ,  G02B19/009

    摘要： A beam delivery apparatus, including a set of focusing mirrors (or transmissive lenses) mounted along an endoscope channel. A laser beam can be focused into an input end of the channel with a smaller F number (wider cone angle) than is possible in a conventional endoscope. As the beam propagates down the channel, it is reflected (or transmitted) a finite number of times by the focusing elements. The focusing elements act as a periscope to focus and refocus the beam as it propagates along the channel, with little loss of beam power. The invention enables delivery of the beam to the channel's distal end with a smaller F number than can be achieved using a conventional endoscope. In a preferred embodiment, a pair of reflecting strips are mounted the channel, the surface of each strip defines six focusing mirrors, and the beam undergoes a total of twelve reflections from the mirrors as it propagates down the channel. Preferably, the surface of each mirror has a curvature selected to prevent the introduction of astigmatic distortion during each beam reflection.

    摘要翻译： 一种束输送装置，包括沿着内窥镜通道安装的一组聚焦镜（或透射透镜）。 激光束可以以比传统内窥镜中可能的更小的F数（更宽的锥角）聚焦到通道的输入端。 随着光束向下传播，它被聚焦元件反射（或传输）有限次数。 聚焦元件用作潜望镜，以便当光束沿着通道传播时聚焦和重新聚焦光束，光束功率损失很小。 本发明使得能够以比使用常规内窥镜可以实现的更小的F数将束传送到通道的远端。 在优选实施例中，一对反射条安装在通道上，每个条的表面限定六个聚焦反射镜，并且当光束沿着通道向下传播时，该光束经过总共十二次反射。 优选地，每个反射镜的表面具有选择的曲率，以防止在每个光束反射期间引入散光变形。

    Selective aperture for laser delivery system for providing incision, tissue ablation and coagulation
    5.
    发明授权
    Selective aperture for laser delivery system for providing incision, tissue ablation and coagulation 失效
    用于激光输送系统的选择性孔径用于提供切口，组织消融和凝血

    公开(公告)号：US06575964B1

    公开(公告)日：2003-06-10

    申请号：US09498937

    申请日：2000-02-04

    申请人： James L. Hobart ,  Daniel K. Negus ,  Ken Gott ,  Rene Hugues

    发明人： James L. Hobart ,  Daniel K. Negus ,  Ken Gott ,  Rene Hugues

    IPC分类号： A61B1818

    CPC分类号： A61B18/203 ,  A61B18/201 ,  A61B2017/00199 ,  A61B2017/00761 ,  A61B2018/00452 ,  A61B2018/207

    摘要： A selective aperture for a laser delivery system for providing incision, ablation and coagulation. A laser crystal disposed between two reflective surfaces forms a laser beam. An aperture member positioned between the laser crystal and one of the reflective surfaces includes a substantially circular aperture for passing the laser beam. The size of the aperture is selectively adjustable. The aperture member has a plurality of apertures of various different sizes and is rotatable about an axis of rotation. The axis of rotation is parallel to the longitudinal axis of the laser crystal. By appropriately rotating the aperture member, a selected one of the apertures is positioned to pass the laser beam. A stepper motor and flexible shaft are utilized for rotating the aperture member. At least one of the apertures is surrounded by a beveled portion of the rotatable member. Alternatively, two lasers with different size fixed apertures could be utilized and directed to a common surface. According to an aspect of the invention, an articulated arm is provided along with one or more refocussing optics for refocussing the laser beam as it travels through the arm. According to another aspect, a second laser source is provided along with a galvanometer for directing each of two laser beams to a surface to be treated. Such an arrangement provides exceptional versatility and control over the beam emitted. According to an another aspect, the aperture for a single laser source is rapidly changed during the performance of a procedure. By rapidly switching between forming an incision and cauterizing, an incision can be cauterized while being made.

    摘要翻译： 用于激光输送系统的选择性孔径，用于提供切口，消融和凝固。 设置在两个反射表面之间的激光晶体形成激光束。 位于激光晶体和反射表面之一中的光圈元件包括用于使激光束通过的基本上圆形的孔。 光圈的大小可选择性地调节。 孔径构件具有多个不同尺寸的孔，并可围绕旋转轴线旋转。 旋转轴线平行于激光晶体的纵向轴线。 通过适当地旋转孔径构件，所选择的一个孔被定位成使激光束通过。 使用步进电机和柔性轴来旋转孔径构件。 至少一个孔被可旋转构件的斜切部分包围。 或者，可以使用具有不同尺寸的固定孔的两个激光器并且被引导到公共表面。 根据本发明的一个方面，铰链臂与一个或多个重聚焦光学器件一起提供，用于当激光束穿过臂时重新聚焦激光束。 根据另一方面，第二激光源与检流计一起提供，用于将两个激光束中的每一个引导到待处理的表面。 这种布置提供了出色的通用性和对发射的光束的控制。 根据另一方面，在执行过程期间，用于单个激光源的孔径快速变化。 通过在形成切口和烧灼之间快速切换，可以在制造时切割切口。

    High power laser with focusing mirror sets
    6.
    发明授权
    High power laser with focusing mirror sets 失效
    大功率激光与聚焦镜组

    公开(公告)号：US5052017A

    公开(公告)日：1991-09-24

    申请号：US535185

    申请日：1990-06-08

    申请人： James L. Hobart ,  Michael W. Sasnett ,  Wayne S. Mefferd ,  Peter N. Allen

    发明人： James L. Hobart ,  Michael W. Sasnett ,  Wayne S. Mefferd ,  Peter N. Allen

    IPC分类号： B23K26/06 ,  H01S3/07 ,  H01S3/08 ,  H01S3/081

    CPC分类号： B23K26/0643 ,  B23K26/06 ,  B23K26/0665 ,  H01S3/076 ,  H01S3/081 ,  H01S3/08072

    摘要： A laser system employing one or more mirror sets having substantially astigmatism-free focusing power sufficient to maintain a desired laser beam diameter, for example, to compensate for thermally-induced distributed lensing. In one class of preferred embodiments, the invention is a high power gas laser system having a folded optical cavity with a periodic intracavity refocusing means to compensate for distributed negative thermal lensing in the hot plasma that comprises the active medium, and thus maintain a substantially constant beam diameter throughout the optical cavity. The periodic intracavity refocusing means preferably includes a corner mirror set (including at least one curved mirror and at least one other mirror) at each corner of the folded optical cavity. In one preferred embodiment, each corner mirror set is a mirror pair including a spherical mirror and cylindrical mirror. In another preferred embodiment, each corner mirror set comprises three mirrors (including three spherical mirrors, or two spherical mirrors and a planar mirror). In another class of preferred embodiments, the inventive focusing mirror sets are not included within the optical cavity of a high power laser, but instead, one or more such focusing mirror sets are included within the output beam delivery optical components of a high power laser. For example, one of the inventive focusing mirror sets may replace a conventional lens to direct the output beam of a high power laser system along a desired path and maintain a desired beam diameter.

    摘要翻译： 一种采用一个或多个镜组的激光系统，其具有足以维持期望的激光束直径的基本上无像散的聚焦功率，例如以补偿热致分布透镜。 在一类优选实施例中，本发明是一种高功率气体激光系统，其具有带有周期性腔内重聚焦装置的折叠光学腔，以补偿包含活性介质的热等离子体中分布的负热透镜，从而保持基本恒定 整个光学腔内的光束直径。 周期性腔内再聚焦装置优选地包括在折叠光学腔的每个拐角处的角镜组（包括至少一个弯曲镜和至少一个其它反射镜）。 在一个优选实施例中，每个角镜组是包括球面镜和圆柱形镜的镜对。 在另一个优选实施例中，每个角镜组包括三个反射镜（包括三个球面镜，或两个球面镜和平面镜）。 在另一类优选实施例中，本发明的聚焦镜组不包括在大功率激光器的光腔内，而是一个或多个这样的聚焦镜组包括在大功率激光器的输出光束传送光学部件内。 例如，本发明的聚焦镜组之一可以替代传统的透镜，以沿着期望的路径引导大功率激光系统的输出光束并保持期望的光束直径。

    Laser alignment servo method and apparatus
    7.
    发明授权
    Laser alignment servo method and apparatus 失效
    激光对准伺服方法和装置

    公开(公告)号：US4939739A

    公开(公告)日：1990-07-03

    申请号：US342361

    申请日：1989-04-24

    申请人： James L. Hobart ,  Wayne S. Mefferd ,  Bruce Peuse

    发明人： James L. Hobart ,  Wayne S. Mefferd ,  Bruce Peuse

    IPC分类号： H01S3/00 ,  H01S3/136 ,  H01S3/139

    CPC分类号： H01S3/0014 ,  H01S3/136 ,  H01S3/139

    摘要： A servo alignment method and apparatus for maintaining laser beam alignment. An operating parameter of the laser (such as output beam power) is measured, and error signals are generated from the measured operating parameter signal for controlling the laser beam alignment. In one class of embodiments, modulation signals are supplied to an intra-cavity component of a laser system to modulated the beam path. The beam path may be modulated by reciprocating a laser resonator mirror about a mirror axis or two substantially orthogonal mirror axes. In the latter case, the mirror may be vibrated about the axes either alternately (first about one axis and then about the other) or simultaneously. In embodiments in which an intra-cavity component is modulated, the laser operating parameter is measured during such modulation, the measured operating parameter signal is demodulated (preferably by multiplication in a mixer with a selected frequency component of the modulation signal currently being asserted), and error signals are generated from the demodulated signal for controlling the laser beam alignment.

    摘要翻译： 一种用于维持激光束对准的伺服对准方法和装置。 测量激光器的操作参数（例如输出光束功率），并根据测量的操作参数信号产生误差信号，以控制激光束对准。 在一类实施例中，调制信号被提供给激光系统的腔内部件以调制光束路径。 光束路径可以通过围绕镜像轴或两个基本上正交的镜像轴往复运动激光谐振器镜来调制。 在后一种情况下，反射镜可以围绕轴线交替振动（首先约一轴，然后围绕另一轴）或同时振动。 在调制腔内部件的实施例中，在这种调制期间测量激光器操作参数，测量的操作参数信号被解调（优选地通过在当前被断言的调制信号的选定频率分量的混频器中相乘） 并且从用于控制激光束对准的解调信号产生误差信号。

    Optical scan pattern generator for code reading systems
    8.
    发明授权
    Optical scan pattern generator for code reading systems 失效
    用于代码读取系统的光学扫描模式发生器

    公开(公告)号：US3995166A

    公开(公告)日：1976-11-30

    申请号：US568633

    申请日：1975-04-16

    申请人： James L. Hobart ,  Wayne S. Mefferd

    发明人： James L. Hobart ,  Wayne S. Mefferd

    IPC分类号： G02B26/12 ,  G06K7/10

    CPC分类号： G06K7/10871 ,  G02B26/123

    摘要： A reader-scanner system using a laser as a source of a narrow beam of light and having optical means for directing the light beam from the laser to a scan target area with the optical means generating a pattern comprising a series of intersecting diagonal and horizontal lines relative to the path of objects which pass through the scan target area, with sequential scan pattern sets in the scan target area displaced in the direction of oncoming objects from the previous scan pattern set, with each of the lines defining each scan pattern set approaching the scan target area from a different direction and wherein the optical path of the incoming scan lines is shared by the reflected light as it travels to the system's optical detector.

    摘要翻译： 一种使用激光器作为窄光束源的读取器扫描器系统，并且具有用于将光束从激光引导到扫描目标区域的光学装置，所述光学装置产生包括一系列相交的对角线和水平线的图案 相对于穿过扫描目标区域的物体的路径，扫描目标区域中的顺序扫描图案集在从先前的扫描图案集合的对方物体的方向上移位，其中每条线限定每个扫描图案集接近 从不同的方向扫描目标区域，并且其中进入的扫描线的光路在其经过系统的光学检测器时由反射光共享。

    Laser applicator
    9.
    发明授权
    Laser applicator 有权
    激光打标机

    公开(公告)号：US06770069B1

    公开(公告)日：2004-08-03

    申请号：US10177058

    申请日：2002-06-21

    申请人： James L. Hobart ,  Daniel K. Negus

    发明人： James L. Hobart ,  Daniel K. Negus

    IPC分类号： A61N5067

    CPC分类号： A61B18/203 ,  A61B2018/00023 ,  A61B2018/00452 ,  A61B2018/00458

    摘要： An applicator is configured with an optical window formed from a first and a second lens section. The applicator is configured for modulating the temperature of a working surface while simultaneously exposing the working surface to a radiation source. The first and the second lens sections form boundaries of a medium cavity for channeling a temperature regulating medium which is preferably a cooled liquid medium. The first lens section has an outer lens and an inner lens which are preferably separated by a distance in the range of 0.1 to 1.0 cm and form boundaries of an insulating region. In a preferred method, a temperature regulating medium is circulated through the medium cavity while exposing a target tissue to laser radiation through the optical window. The insulating region helps reduce fogging of the optical window thereby improving visibility through the window and reducing scattering of the laser radiation. Preferably, the insulating region is under vacuum. Alternatively, the insulating region is configured to channel a second temperature regulating medium. The applicator and system of the instant invention are preferably configured for exposing dermis to a pulsed laser source while simultaneously cooling dermis during procedures to remove hair or treat the cutaneous vascular lesions.

    摘要翻译： 施加器配置有由第一和第二透镜部分形成的光学窗口。 施加器构造成用于调节工作表面的温度，同时将工作表面暴露于辐射源。 第一透镜部分和第二透镜部分形成介质腔的边界，用于引导优选冷却的液体介质的温度调节介质。 第一透镜部分具有外透镜和内透镜，其优选地分隔在0.1至1.0cm的范围内并形成绝缘区域的边界。 在优选的方法中，温度调节介质循环通过介质空腔，同时将目标组织暴露于通过光学窗口的激光辐射。 绝缘区域有助于减少光学窗口的雾化，从而提高通过窗口的可视性并减少激光辐射的散射。 优选地，绝缘区域处于真空状态。 或者，绝缘区域被配置成引导第二温度调节介质。 本发明的施用器和系统优选地被配置为将真皮暴露于脉冲激光源，同时在除去毛发或治疗皮肤血管病变的过程期间同时冷却真皮。

    Laser alignment servo method and apparatus
    10.
    发明授权
    Laser alignment servo method and apparatus 失效
    激光对准伺服方法和装置

    公开(公告)号：US5033061A

    公开(公告)日：1991-07-16

    申请号：US535848

    申请日：1990-06-11

    申请人： James L. Hobart ,  Wayne S. Mefferd ,  Bruce Peuse

    发明人： James L. Hobart ,  Wayne S. Mefferd ,  Bruce Peuse

    IPC分类号： H01S3/00 ,  H01S3/136 ,  H01S3/139

    CPC分类号： H01S3/136 ,  H01S3/0014 ,  H01S3/139

    摘要： A servo alignment method and apparatus for maintaining laser beam alignment. An operating parameter of the laser (such as output beam power) is measured, and error signals are generated from the measured operating parameter signal for controlling the laser beam alignment. In one class of embodiments, modulation signals are supplied to an intra-cavity component of a laser system to modulate the beam path. The beam path may be modulated by reciprocating a laser resonator mirror about a mirror axis or two substantially orthogonal mirror axes. In the latter case, the mirror may be vibrated about the axes either alternately (first about one axis and then about the other) or simultaneously. In embodiments in which an intra-cavity component is modulated, the laser operating parameter is measured during such modulation, the measured operating parameter signal is demodulated (preferably by multiplication in a mixer with a selected frequency component of the modulation signal currently being asserted, and error signals are generated from the demodulated signal for controlling the laser beam alignment.

    摘要翻译： 一种用于维持激光束对准的伺服对准方法和装置。 测量激光器的操作参数（例如输出光束功率），并根据测量的操作参数信号产生误差信号，以控制激光束对准。 在一类实施例中，调制信号被提供给激光系统的腔内部件以调制光束路径。 光束路径可以通过围绕镜像轴或两个基本上正交的镜像轴往复运动激光谐振器镜来调制。 在后一种情况下，反射镜可以围绕轴线交替振动（首先约一轴，然后围绕另一轴）或同时振动。 在调制腔内部件的实施例中，在这种调制期间测量激光器操作参数，测量的操作参数信号被解调（优选地通过在当前被断言的调制信号的选定频率分量的混频器中相乘，以及 从用于控制激光束对准的解调信号产生误差信号。