Patents by Inventor Petrov Nikolai
Petrov Nikolai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7408847Abstract: An integrated optical head is provided. In the integrated optical head, a light source emits light. A waveguide guides the light. An input coupler is located at one edge of the waveguide, and couples light emitted from the light source and transmits the coupled light to the waveguide. An output coupler is located at another edge of the waveguide, and couples light emitted from the waveguide and focuses the coupled light on an optical disc. A light path changing unit is installed on the waveguide, and changes the light path of light that has been reflected by the optical disc and then passed through the output coupler. An optical detector receives the light passed through the light path changing unit and converts the received light into an electrical signal in order to detect information from the optical disc. Accordingly, an input coupling efficiency and an output coupling efficiency are improved, such that light loss is reduced.Type: GrantFiled: August 21, 2006Date of Patent: August 5, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Petrov Nikolai, Jin-seung Sohn, Eun-hyoung Cho, Myung-bok Lee
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Patent number: 7184386Abstract: An integrated optical head is provided. In the integrated optical head, a light source emits light. A waveguide guides the light. An input coupler is located at one edge of the waveguide, and couples light emitted from the light source and transmits the coupled light to the waveguide. An output coupler is located at another edge of the waveguide, and couples light emitted from the waveguide and focuses the coupled light on an optical disc. A light path changing unit is installed on the waveguide, and changes the light path of light that has been reflected by the optical disc and then passed through the output coupler. An optical detector receives the light passed through the light path changing unit and converts the received light into an electrical signal in order to detect information from the optical disc Accordingly, an input coupling efficiency and an output coupling efficiency are improved, such that light loss is reduced.Type: GrantFiled: December 16, 2002Date of Patent: February 27, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Petrov Nikolai, Jin-seung Sohn, Eun-hyoung Cho, Myung-bok Lee
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Publication number: 20060280057Abstract: An integrated optical head is provided. In the integrated optical head, a light source emits light. A waveguide guides the light. An input coupler is located at one edge of the waveguide, and couples light emitted from the light source and transmits the coupled light to the waveguide. An output coupler is located at another edge of the waveguide, and couples light emitted from the waveguide and focuses the coupled light on an optical disc. A light path changing unit is installed on the waveguide, and changes the light path of light that has been reflected by the optical disc and then passed through the output coupler. An optical detector receives the light passed through the light path changing unit and converts the received light into an electrical signal in order to detect information from the optical disc. Accordingly, an input coupling efficiency and an output coupling efficiency are improved, such that light loss is reduced.Type: ApplicationFiled: August 21, 2006Publication date: December 14, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Petrov Nikolai, Jin-seung Sohn, Eun-hyoung Cho, Myung-bok Lee
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Patent number: 6958968Abstract: An optical head in which a graded index (GRIN) lens is provided. The optical head includes a slider connected to an arm and flying a predetermined distance above a recording layer for data recording, a GRIN lens mounted in the slider for focusing an incident beam to form a light spot of a predetermined size on its exit surface adjacent to the recording layer, and a light-emitting unit for emitting the incident light to the GRIN lens.Type: GrantFiled: April 29, 2002Date of Patent: October 25, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Myung-bok Lee, Petrov Nikolai, Gi-myung Woo
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Patent number: 6791071Abstract: An apparatus and method for measuring an aperture of a near-field optical probe is provided. The apparatus includes a light source, an optical detector, and a filter. The light source radiates light to the near-field optical probe. The optical detector is positioned before the near-field optical probe and receives the light transmitted through the near-field optical probe to detect light intensity. The filter is disposed between the light source and the optical detector and transmits only light of wavelengths in a specific mode from the light transmitted through the near-field optical probe. Thus, an aperture diameter of the near-field optical probe can accurately be measured in real-time without damaging the near-field optical probe.Type: GrantFiled: September 13, 2002Date of Patent: September 14, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Gi-myung Woo, Petrov Nikolai, Myung-bok Lee
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Publication number: 20040042377Abstract: An integrated optical head is provided. In the integrated optical head, a light source emits light. A waveguide guides the light. An input coupler is located at one edge of the waveguide, and couples light emitted from the light source and transmits the coupled light to the waveguide. An output coupler is located at another edge of the waveguide, and couples light emitted from the waveguide and focuses the coupled light on an optical disc. A light path changing unit is installed on the waveguide, and changes the light path of light that has been reflected by the optical disc and then passed through the output coupler. An optical detector receives the light passed through the light path changing unit and converts the received light into an electrical signal in order to detect information from the optical disc Accordingly, an input coupling efficiency and an output coupling efficiency are improved, such that light loss is reduced.Type: ApplicationFiled: December 16, 2002Publication date: March 4, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Petrov Nikolai, Jin-seung Sohn, Eun-hyoung Cho, Myung-bok Lee
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Publication number: 20030057352Abstract: An apparatus and method for measuring an aperture of a near-field optical probe is provided. The apparatus includes a light source, an optical detector, and a filter. The light source radiates light to the near-field optical probe. The optical detector is positioned before the near-field optical probe and receives the light transmitted through the near-field optical probe to detect light intensity. The filter is disposed between the light source and the optical detector and transmits only light of wavelengths in a specific mode from the light transmitted through the near-field optical probe. Thus, an aperture diameter of the near-field optical probe can accurately be measured in real-time without damaging the near-field optical probe.Type: ApplicationFiled: September 13, 2002Publication date: March 27, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Gi-myung Woo, Petrov Nikolai, Myung-bok Lee
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Publication number: 20030016615Abstract: An optical head in which a graded index (GRIN) lens is provided. The optical head includes a slider connected to an arm and flying a predetermined distance above a recording layer for data recording, a GRIN lens mounted in the slider for focusing an incident beam to form a light spot of a predetermined size on its exit surface adjacent to the recording layer, form a light spot of and a light-emitting unit for emitting the incident light to the GRIN lens.Type: ApplicationFiled: April 29, 2002Publication date: January 23, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Myung-Bok Lee, Petrov Nikolai, Gi-Myung Woo