公开(公告)号：US20090028197A1

公开(公告)日：2009-01-29

申请号：US11828242

申请日：2007-07-25

Applicant: David F. Arnone ,  Timothy Day

Inventor： David F. Arnone ,  Timothy Day

IPC: H01S3/13

CPC classification number: H01S5/141 ,  B82Y20/00 ,  G02B5/1828 ,  H01S3/1055 ,  H01S5/02208 ,  H01S5/02248 ,  H01S5/02252 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/3401

Abstract: A MIR laser source that produces a fixed frequency output beam that is within the MIR range includes a QC gain media, and a wavelength dependent (“WD') feedback assembly that is spaced apart from the QC gain media and that cooperates with the QC gain media to form an external cavity. The WD feedback assembly may be used to precisely tune and control a lasing wavelength of the external cavity, and the position of the WD feedback assembly relative to the QC gain media may be fixed to maintain the precise lasing wavelength of the external cavity. With this design, each MIR laser source can be individually tuned to achieve the desired fixed frequency output beam that is within the MIR range.

Abstract translation: 产生在MIR范围内的固定频率输出光束的MIR激光源包括QC增益介质和与QC增益介质间隔开并与QC增益配合的波长相关（“WD”）反馈组件 介质形成一个外部空腔，WD反馈组件可用于精确调节和控制外腔的激光波长，WD反馈组件相对于QC增益介质的位置可以被固定，以保持精确的激光波长 通过这种设计，每个MIR激光源可以单独调谐，以实现在MIR范围内的所需固定频率输出光束。

公开(公告)号：US20180290081A1

公开(公告)日：2018-10-11

申请号：US16009740

申请日：2018-06-15

Applicant: Timothy Day

Inventor： Timothy Day

IPC: B01D29/96 ,  B01D29/05 ,  B01D29/27 ,  B01D35/027 ,  C02F11/12

Abstract: A filter pad for use in a dewatering container is presented. The filter pad is configured to fit within the interior cavity and substantially line the interior surfaces. Material, which is usually liquids and slurries, is added to the container with the filter in place and gravity is used to filter the sediment, while the water is released through a release nozzle. The solids are retained in the filter pad for later disposal. The filter pad has a portion that can be selectively opened and is configured for placement substantially adjacent the door to permit selective egress of contents of the interior cavity.

公开(公告)号：US07826503B2

公开(公告)日：2010-11-02

申请号：US12204256

申请日：2008-09-04

Applicant: Timothy Day ,  Miles James Weida

Inventor： Timothy Day ,  Miles James Weida

IPC: H01S3/04 ,  H01S3/08

CPC classification number: H01S5/14 ,  B82Y20/00 ,  H01S5/0224 ,  H01S5/02272 ,  H01S5/02276 ,  H01S5/024 ,  H01S5/02407 ,  H01S5/02476 ,  H01S5/141 ,  H01S5/3401

Abstract: In a semiconductor lasers using quantum well gain medium, a quantum well stack is mounted in an epi-down configuration. The epitaxial side of the device may be directly bonded to an efficient heat transport system so that heat may more easily leave the quantum well stack layers and be disposed at a heatsink. Such a device runs cooler and exhibits reduced loss mechanisms as represented by a laser system loss-line. External cavity systems using this configuration may permit a high degree of tunability, and these systems are particularly improved as the tuning range is extended by lowered cavity losses.

Abstract translation: 在使用量子阱增益介质的半导体激光器中，量子阱堆叠以外延形式安装。 器件的外延侧可以直接结合到有效的热传输系统，使得热量可以更容易地离开量子阱堆叠层并且设置在散热器处。 这种装置运行较冷并且表现出减少的损失机制，如激光系统损耗线所示。 使用这种构造的外腔系统可以允许高度的可调性，并且通过降低空腔损失来延长调谐范围，这些系统被特别改进。

公开(公告)号：US07796341B2

公开(公告)日：2010-09-14

申请号：US12425306

申请日：2009-04-16

Applicant: Timothy Day ,  David F. Arnone

Inventor： Timothy Day ,  David F. Arnone

IPC: G02B27/30 ,  G02B13/18

CPC classification number: G02B3/00 ,  B82Y20/00 ,  G02B7/023 ,  H01S5/02288 ,  H01S5/02476 ,  H01S5/3401

Abstract: A lens may operate in the mid-IR spectral region and couple highly divergent beams into highly collimated beams. In combination with a light source having a characteristic output beam, the lens may provide highly stable, miniaturized mid-IR sources that deliver optical beams. An advanced mounting system may provide long term sturdy mechanical coupling and alignment to reduce operator maintenance. In addition, devices may also support electrical and thermal subsystems that are delivered via these mounting systems. A mid-IR singlet lens having a numerical aperture greater than about 0.7 and a focal length less than 10 mm may be combined with a quantum well stack semiconductor based light source such that the emission facet of the semiconductor lies in the focus of the lens less than 2 mm away from the lens surface. Together, these systems may provide a package that is highly portable and robust, and easily integrated with external optical systems.

Abstract translation: 透镜可以在中红外光谱区域中操作，并将高度发散的光束耦合到高度准直的光束中。 结合具有特征输出光束的光源，透镜可以提供高度稳定的，小型化的中红外光源，其传送光束。 先进的安装系统可以提供长期坚固的机械联接和对准，以减少操作人员的维护。 此外，设备还可以支持通过这些安装系统传送的电气和热系统。 具有大于约0.7的数值孔径和小于10mm的焦距的中红外单透镜可以与基于量子阱堆叠半导体的光源组合，使得半导体的发射小面位于透镜的焦点较少 距镜头表面2毫米以外。 一起，这些系统可以提供高度便携和坚固的包装，并且容易地与外部光学系统集成。

公开(公告)号：US07738518B2

公开(公告)日：2010-06-15

申请号：US12204256

申请日：2008-09-04

Applicant: Timothy Day ,  Miles James Weida

Inventor： Timothy Day ,  Miles James Weida

IPC: H01S3/04 ,  H01S3/08

Abstract: In a semiconductor lasers using quantum well gain medium, a quantum well stack is mounted in an epi-down configuration. The epitaxial side of the device may be directly bonded to an efficient heat transport system so that heat may more easily leave the quantum well stack layers and be disposed at a heatsink. Such a device runs cooler and exhibits reduced loss mechanisms as represented by a laser system loss-line. External cavity systems using this configuration may permit a high degree of tunability, and these systems are particularly improved as the tuning range is extended by lowered cavity losses.

公开(公告)号：US07492806B2

公开(公告)日：2009-02-17

申请号：US11154264

申请日：2005-06-15

Applicant: Timothy Day ,  David F. Arnone

Inventor： Timothy Day ,  David F. Arnone

IPC: H01S3/08 ,  H01S3/04 ,  H01S3/30

CPC classification number: H01S5/02216 ,  G02B3/00 ,  G02B7/023 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/02492 ,  H01S5/0427 ,  H01S5/06226 ,  H01S5/3401

Abstract: A compact mid-IR laser device utilizes a quantum cascade laser to provide mid-IR frequencies suitable for use in molecular detection by signature absorption spectra. The compact nature of the device is obtained owing to an efficient heat transfer structure, the use of a small diameter aspheric lens and a monolithic assembly structure to hold the optical elements in a fixed position relative to one another. The compact housing size may be approximately 20 cm×20 cm×20 cm or less. Efficient heat transfer is achieved using a thermoelectric cooler TEC combined with a high thermal conductivity heat spreader onto which the quantum cascade laser is thermally coupled.

Abstract translation: 紧凑的中红外激光装置利用量子级联激光器提供适合用于通过特征吸收光谱进行分子检测的中红外频率。 由于有效的传热结构，使用小直径非球面透镜和单片组件结构来将光学元件保持在相对于彼此的固定位置，可以获得装置的紧凑性。 紧凑的外壳尺寸可以是大约20cm×20cm×20cm或更小。 使用与量子级联激光器热耦合的高导热散热器结合的热电冷却器TEC来实现有效的热传递。

公开(公告)号：US20080075133A1

公开(公告)日：2008-03-27

申请号：US11525387

申请日：2006-09-22

Applicant: Timothy Day ,  Miles James Weida

Inventor： Timothy Day ,  Miles James Weida

IPC: H01S3/04

CPC classification number: H01S5/14 ,  B82Y20/00 ,  H01S5/0224 ,  H01S5/02272 ,  H01S5/02276 ,  H01S5/024 ,  H01S5/02407 ,  H01S5/02476 ,  H01S5/141 ,  H01S5/3401

Abstract: In a semiconductor lasers using quantum well gain medium, a quantum well stack is mounted in an epi-down configuration. The epitaxial side of the device may be directly bonded to an efficient heat transport system so that heat may more easily leave the quantum well stack layers and be disposed at a heatsink. Such a device runs cooler and exhibits reduced loss mechanisms as represented by a laser system loss-line. External cavity systems using this configuration may permit a high degree of tunability, and these systems are particularly improved as the tuning range is extended by lowered cavity losses.

Abstract translation: 在使用量子阱增益介质的半导体激光器中，量子阱堆叠以外延形式安装。 器件的外延侧可以直接结合到有效的热传输系统，使得热量可以更容易地离开量子阱堆叠层并且设置在散热器处。 这种装置运行较冷并且表现出减少的损失机制，如激光系统损耗线所示。 使用这种构造的外腔系统可以允许高度的可调性，并且通过降低空腔损失来延长调谐范围，这些系统被特别改进。

公开(公告)号：US20080007230A1

公开(公告)日：2008-01-10

申请号：US11250615

申请日：2005-10-17

Applicant: Aaron Kalyuzhny ,  John McCall ,  Timothy Day

Inventor： Aaron Kalyuzhny ,  John McCall ,  Timothy Day

IPC: G05F1/70

CPC classification number: H02J3/18 ,  H02J3/24 ,  Y02E40/30

Abstract: A control system for an electrical power system includes an electrical corrective device, a voltage measuring device coupled to each phase of the electric power system, a current measuring device connected between each phase of the electric power system and the electrical corrective device, and a protective device connected to outputs of the voltage measuring device and the current measuring device. The protective device includes a controller configured to detect an imbalance using the measured voltages and currents output from the voltage measuring device and the current measuring device without using or independently of other recent voltage or current measurements for other points in the electrical corrective device and independently of a neutral-ground measurement at the electrical corrective device.

Abstract translation: 一种用于电力系统的控制系统，包括电气校正装置，耦合到电力系统的每个相的电压测量装置，连接在电力系统的每个相和电气校正装置之间的电流测量装置，以及保护 设备连接到电压测量装置和电流测量装置的输出端。 保护装置包括控制器，其被配置为使用从电压测量装置和电流测量装置输出的测量的电压和电流来检测不平衡，而不使用或独立于电校正装置中的其它点的其他最近的电压或电流测量，并且独立于 在电气校正装置处的中性点测量。

公开(公告)号：US20070178979A1

公开(公告)日：2007-08-02

申请号：US11716427

申请日：2007-03-09

Applicant: Frank Bechtel ,  Timothy Day ,  Joseph Downey ,  Michael Glynn

Inventor： Frank Bechtel ,  Timothy Day ,  Joseph Downey ,  Michael Glynn

IPC: B21H3/02

CPC classification number: B21K1/56 ,  F16B25/0021 ,  F16B25/0047 ,  F16B25/10 ,  F16B35/065

Abstract: A self-tapping screw includes a head, a shaft, a tapered end and a rounded distal tip. A thread includes a thread start on the tapered end. The axial position of the thread start and a first full thread, the radius of the round distal tip and the diameter of the tapered end at the thread start are controlled in relation to the screw size for consistent, improved screw performance.

Abstract translation: 自攻螺钉包括头部，轴，锥形末端和圆形远端尖端。 螺纹包括锥形端的螺纹起动。 螺纹起始和第一个全螺纹的轴向位置，圆形远端的半径和螺纹起始处锥形端的直径相对于螺钉尺寸进行控制，以实现一致的改进的螺杆性能。

公开(公告)号：US20070030865A1

公开(公告)日：2007-02-08

申请号：US11198496

申请日：2005-08-05

Applicant: Timothy Day ,  David Arnone

Inventor： Timothy Day ,  David Arnone

IPC: H01S3/30 ,  H01S3/04 ,  H01S3/08

CPC classification number: H01S5/141 ,  B82Y20/00 ,  H01S3/1055 ,  H01S5/02216 ,  H01S5/02252 ,  H01S5/02288 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/02492 ,  H01S5/0427 ,  H01S5/06226 ,  H01S5/143 ,  H01S5/3402

Abstract: A compact mid-IR laser device utilizes an external cavity to tune the laser. The external cavity may employ a Littrow or Littman cavity arrangement. In the Littrow cavity arrangement, a filter, such as a grating, is rotated to provide wavelength gain medium selectivity. In the Littman cavity arrangement, a reflector is rotated to provide tuning. A quantum cascade laser gain medium provides mid-IR frequencies suitable for use in molecular detection by signature absorption spectra. The compact nature of the device is obtained owing to an efficient heat transfer structure, the use of a small diameter aspheric lens for both the output lens and the external cavity lens and a monolithic assembly structure to hold the optical elements in a fixed position relative to one another. The compact housing size may be approximately 20 cm×20 cm×20 cm or less. Efficient heat transfer is achieved using a thermoelectric cooler TEC combined with a high thermal conductivity heat spreader onto which the quantum cascade laser gain medium is thermally coupled. The heat spreader not only serves to dissipate heat and conduct same to the TEC, but also serves as an optical platform to secure the optical elements within the housing in a fixed relationship relative on one another. The small diameter aspheric output and external cavity lens each may have a diameter of 10 mm or less and each lens is positioned to provided a collimated beam output from the quantum cascade laser gain medium. The housing is hermetically sealed to provide a rugged, light weight portable MIR laser source.

Abstract translation: 紧凑的中红外激光器件利用外部腔来调谐激光器。 外腔可以采用Littrow或Littman腔布置。 在Littrow腔布置中，旋转滤光器，例如光栅，以提供波长增益介质选择性。 在Littman腔布置中，旋转反射器以提供调谐。 量子级联激光增益介质提供适合用于通过特征吸收光谱进行分子检测的中红外频率。 通过有效的传热结构，可以获得装置的紧凑性，使用用于输出透镜和外腔透镜的小直径非球面透镜和用于将光学元件保持在固定位置的单片组件结构 另一个。 紧凑的外壳尺寸可以是大约20cm×20cm×20cm或更小。 使用与量子级联激光增益介质热耦合的高导热散热器结合的热电冷却器TEC实现有效的热传递。 散热器不仅用于散热并将其传导到TEC，而且还用作光学平台，以将光学元件以相对于彼此的固定关系固定在壳体内。 小直径非球面输出和外腔透镜各自可以具有10mm或更小的直径，并且每个透镜被定位成提供从量子级联激光增益介质输出的准直光束。 外壳密封，提供坚固，轻便的便携式MIR激光源。