Patents Assigned to Opnext, Inc.
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Patent number: 8675698Abstract: A green laser is made by constructing a laser cavity that includes within it a laser diode, a non-linear crystal such as KTP, and a lens. The boundaries of the cavity are not defined by the ends of the diode itself, but are instead defined by the ends of an apparatus that includes the lens and the KTP or similar crystal.Type: GrantFiled: March 12, 2008Date of Patent: March 18, 2014Assignee: Opnext, Inc.Inventor: Deyu Zhou
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Patent number: 7837503Abstract: A pluggable optical/electrical module is disclosed. One or more features operate to decrease electromagnetic interference are implemented, which features include deforming the portions that mate together to form the housing, placing elbow deformities on extending fingers to more properly seal the housing convex shape to housing to seal gaps between multiple sections, and placing an EMI insulating material within an opening that is formed for the latch that locks the module in place in a chassis.Type: GrantFiled: March 27, 2008Date of Patent: November 23, 2010Assignee: Opnext, Inc.Inventors: Robert Hartzell, Zining Huang, Frank David Yashar, Henri Li
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Patent number: 7821709Abstract: An apparatus is disclosed which may include a sheet of reflective material suitable for forming a display screen; a screen control mechanism operable to move the reflective material into extended and retracted positions, wherein the apparatus is portable and configured to receive image data from a hand-held projection device.Type: GrantFiled: October 11, 2007Date of Patent: October 26, 2010Assignee: Opnext, Inc.Inventors: Jon Anderson, Richard Zoccolillo
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Patent number: 7674047Abstract: A casing includes a solid sleeve and a split sleeve in combination to provide a connection between a fiber stub and a ferrule containing an optical fiber. The arrangement prevents wiggle of the ferrule, and also does so without the tight tolerances that would otherwise be required in solid sleeve systems.Type: GrantFiled: March 23, 2009Date of Patent: March 9, 2010Assignee: Opnext, Inc.Inventors: Jianyao Chen, Frank Yashar
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Patent number: 7657185Abstract: A low form-factor transceiver system appropriate for long-reach optical communications is presented. In accordance with the present invention, an electronic interface to a receiver optical sub assembly (ROSA) and a transmitter optical sub assembly (TOSA) is arranged on a multi-layer board to electrically shield the transmitter and receiver portions from a high-voltage power supply, which is utilized to provide bias voltages to optical detectors in the ROSA. In some embodiments of the invention, the high-voltage power supply is arranged on a top layer while the transmitter and receiver are arranged on a bottom layer in a split-ground arrangement. Layers between the top layer and the bottom layer include at least one ground plane and provide vias for electrical connections.Type: GrantFiled: January 26, 2004Date of Patent: February 2, 2010Assignee: Opnext, Inc.Inventors: Robert Hartzell, Qingmin Zhang
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Publication number: 20090232168Abstract: A green laser is made by constructing a laser cavity that includes within it a laser diode, a non-linear crystal such as KTP, and a lens. The boundaries of the cavity are not defined by the ends of the diode itself, but are instead defined by the ends of an apparatus that includes the lens and the KTP or similar crystal.Type: ApplicationFiled: March 12, 2008Publication date: September 17, 2009Applicant: OPNEXT, INC.Inventor: Deyu Zhou
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Patent number: 7563034Abstract: A casing includes a solid sleeve and a split sleeve in combination to provide a connection between a fiber stub and a ferrule containing an optical fiber. The arrangement prevents wiggle of the ferrule, and also does so without the tight tolerances that would otherwise be required in solid sleeve systems.Type: GrantFiled: September 21, 2007Date of Patent: July 21, 2009Assignee: Opnext, Inc.Inventors: Jianyao Chen, Frank Yashar
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Patent number: 7559705Abstract: A receiver optical amplifier assembly (ROSA) is disclosed that provides for greater tolerances in alignment. The ROSA includes a multimode fiber stub to receive a light beam from a single mode optical fiber. The light beam from the multimode fiber stub is focused by a lens system onto the active area of an optical detector chip. The multimode fiber stub acts as a GRIN lens and allows for optimization of the spot size on the active area. Additionally, in some embodiments the return loss characteristics of the ROSA can be greatly improved by including an angled surface on the multimode fiber stub and moving the active area of the optical detector chip off-axis to compensate.Type: GrantFiled: January 26, 2004Date of Patent: July 14, 2009Assignee: Opnext, Inc.Inventors: Joseph Indhiran Vanniasinkam, Lijun Zhu
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Publication number: 20090097111Abstract: An apparatus is disclosed which may include a sheet of reflective material suitable for forming a display screen; a screen control mechanism operable to move the reflective material into extended and retracted positions, wherein the apparatus is portable and configured to receive image data from a hand-held projection device.Type: ApplicationFiled: October 11, 2007Publication date: April 16, 2009Applicant: OPNEXT, INC.Inventors: Jon Anderson, Richard Zoccolillo
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Patent number: 7397988Abstract: A grating based demultiplexer module is described. The module includes an integrally formed first section, second section, and third section. The first section includes a diffraction grating formed on the surface of the first section and directs a WDM beam onto the internal surface of the diffraction grating. The third section is positioned to receive angularly separated light from the external surface of the diffraction grating. In some embodiments, the third section can direct individualy beams of the angularly separated light onto the surface of optical detectors. The third section provides structural support and maintains the alignment between the first section and the third section.Type: GrantFiled: June 16, 2006Date of Patent: July 8, 2008Assignee: Opnext, Inc.Inventors: Joseph Vanniasinkam, Jon Meyer, Christopher Viray, Bor-Long Twu
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Patent number: 7349597Abstract: A grating based demultiplexer module is described. The module includes an integrally formed first section, second section, and third section. The first section includes a diffraction grating formed on the surface of the first section and directs a WDM beam onto the internal surface of the diffraction grating. The third section is positioned to receive angularly separated light from the external surface of the diffraction grating. In some embodiments,the third section can direct individualy beams of the angularly separated light onto the surface of optical detectors. The third section provides structural support and maintains the alignment between the first section and the third section.Type: GrantFiled: December 21, 2001Date of Patent: March 25, 2008Assignee: Opnext, Inc.Inventors: Joseph Vanniasinkam, Jon Meyer, Christopher Viray, Bor-Long Twu
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Patent number: 7306473Abstract: The present invention provides a three cam bail latch system and a method for disconnecting an electronic component from a port using the three cam bail latch system.Type: GrantFiled: May 31, 2005Date of Patent: December 11, 2007Assignee: Opnext, Inc.Inventors: Frank David Yashar, John P. Wai, Lin Zhang
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Patent number: 7184671Abstract: An optical transmission controller for controlling an optical transmission system is presented. The optical transmission controller according to the present invention includes a laser controller, a modulator block controller, and a modulation driver controller. In some embodiments, the optical transmission controller is formed on a single integrated circuit chip. In some embodiments, the optical transmission controller includes a digital signal processor or microprocessor executing instructions for providing signals to a laser module, a modulator block and modulation drivers.Type: GrantFiled: September 16, 2003Date of Patent: February 27, 2007Assignee: Opnext, Inc.Inventor: Xiangzhong Wang
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Patent number: 7134796Abstract: A device which in an optical interface adapts XFP to a 300 pin MSA transponder socket, permitting replacement of 300 pin MSA transponders with an XFP module on an existing host circuit pack. The device performs dispersion compensation in a removable module, addressing issues of jitter, path length equalization, cross talk and electromagnetic compatibility. As deployed, the device presents at the optical interface the attributes of XFP, hence connected optical devices are “fooled” into reading a connection to XFP instead of the 300 pin MSA.Type: GrantFiled: August 25, 2004Date of Patent: November 14, 2006Assignee: Opnext, Inc.Inventor: Jon Anderson
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Patent number: 7039083Abstract: An optical assembly that can be utilized as a transmitter in a high data rate optical transceiver system is presented. The optical assembly allows a laser driver to be mounted near the laser and allows the laser driver and the laser to utilize a common heat sink. Further, assembly can be performed reliably and quickly to reduce the cost of production of the optical assembly.Type: GrantFiled: March 12, 2003Date of Patent: May 2, 2006Assignee: Opnext, Inc.Inventors: Chris H. Carroll, Shiming Wang, Yu Chung Chang, Joseph Indhiran Vanniasinkam
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Patent number: 6929403Abstract: An optical module having a latching mechanism to allow the module to be latched to a cage of a host system is disclosed. The latching mechanism includes a latch boss that can be engaged by a latch attached to the host cage to capture the module. The latching mechanism also includes a latch key that slides towards the latch boss to disengage the latch from the latch boss. The latch key is moved by a bail that rotates and exerts a force on the latch key by a cam surface.Type: GrantFiled: February 10, 2003Date of Patent: August 16, 2005Assignee: Opnext, Inc.Inventors: German Arciniegas, Lin Zhang
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Patent number: 6922231Abstract: A fiber-optic receiver apparatus is described, which monitors and outputs the average received optical power of the incoming optical data beam, as well as the differential amplitude signal.Type: GrantFiled: January 23, 2003Date of Patent: July 26, 2005Assignee: Opnext, Inc.Inventors: Xiangzhong Wang, Robert P. Hartzell
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Patent number: 6893167Abstract: Optical transceiver modules which may be attached to printed circuit boards or other planar supports are presented. The optical transceiver module includes a housing mountable on a board such that a first portion of the housing is above a plane of the board and a second portion of the housing is below the plane of the board. The board may be any planar support, including a circuit board. The plane may be any plane in the board such as a center plane, for example.Type: GrantFiled: January 17, 2002Date of Patent: May 17, 2005Assignee: Opnext, Inc.Inventors: John P. Brostrom, Bill H. Reysen
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Patent number: 6870976Abstract: A multiplexer/demultiplexer optical system component that is passively aligned upon assembly is disclosed. The optical system includes a lens block and a mirror-filter block. In some embodiments, optical filters are positioned and epoxyed to the mirror-filter block using a positioning tool. In some embodiments, optical filters are positioned and epoxyed on a support structure which has been etched to receive the optical filters. The mirror-filter block is a block having flat surfaces, one of which is a flat reflecting surface. The lens block is formed by injection molding and includes a barrel for holding and positioning an optical fiber, placement for a collimating lens, and placements for focusing lenses such that, when assembled, light incident on each of the focusing lenses propagates along the optical axis of the focusing lens. In some embodiments, the collimating lens and the focusing lenses are integrally formed with the lens block.Type: GrantFiled: March 13, 2001Date of Patent: March 22, 2005Assignee: Opnext, Inc.Inventors: Yeou-Yen Chen, Joseph Vanniasinkam, Jon Meyer, Chris Carroll, Joseph Wai, Christopher Viray, Bill Reysen, Bor-Long Twu
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Patent number: 6728098Abstract: A panel mountable electronic device includes a housing having a flange through which passes a hole, a tab having a threaded hole, and a screw. In some embodiments, the electronic device is an optical transceiver and includes optical as well as electronic connections. The disclosed electronic device may be mounted to a panel by inserting the screw through the hole in the flange and into the threaded hole in the tab, inserting a portion of the housing through an opening in the panel, and rotating the screw to rotate the tab into position to clamp a portion of the panel between the tab and the flange. The screw may be further rotated to draw the tab toward the flange and thereby adjust the contact pressure between the flange and the panel.Type: GrantFiled: January 31, 2002Date of Patent: April 27, 2004Assignee: Opnext, Inc.Inventor: John P. Brostom