Patents by Inventor Jari Turunen
Jari Turunen 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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Publication number: 20200333590Abstract: A method including forming a substrate to form a template which includes areas of high relief and areas of low relief; and forming a high refractive index diffraction grating in the template by adding high refractive index material to the template to form a continuous low relief surface The high refractive index material fills the areas of low relief and covers the areas of high relief of the template to form a high refractive index diffraction grating. The high refractive index diffraction grating includes the high refractive index material configured to have a low relief side corresponding to the continuous low relief surface and configured by the template to have a periodic side including areas of high relief and areas of low relief which periodically alternate in the first direction with the first periodicity and are interconnected by the high refractive index material.Type: ApplicationFiled: May 8, 2020Publication date: October 22, 2020Applicant: Magic Leap, Inc.Inventors: Jyrki Kimmel, Jan ESKOLIN, Toni JARVENPAA, Jari TURUNEN, Jyrki SAARINEN, Seppo HONKANEN
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Patent number: 10698202Abstract: A method including forming a substrate to form a template which includes areas of high relief and areas of low relief; and forming a high refractive index diffraction grating in the template by adding high refractive index material to the template to form a continuous low relief surface. The high refractive index material fills the areas of low relief and covers the areas of high relief of the template to form a high refractive index diffraction grating. The high refractive index diffraction grating includes the high refractive index material configured to have a low relief side corresponding to the continuous low relief surface and configured by the template to have a periodic side including areas of high relief and areas of low relief which periodically alternate in the first direction with the first periodicity and are interconnected by the high refractive index material.Type: GrantFiled: March 21, 2016Date of Patent: June 30, 2020Assignee: Magic Leap, Inc.Inventors: Jyrki Kimmel, Jan Eskolin, Toni Jarvenpaa, Jari Turunen, Jyrki Saarinen, Seppo Honkanen
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Publication number: 20180081170Abstract: A method including forming a substrate to form a template which includes areas of high relief and areas of low relief; and forming a high refractive index diffraction grating in the template by adding high refractive index material to the template to form a continuous low relief surface. The high refractive index material fills the areas of low relief and covers the areas of high relief of the template to form a high refractive index diffraction grating. The high refractive index diffraction grating includes the high refractive index material configured to have a low relief side corresponding to the continuous low relief surface and configured by the template to have a periodic side including areas of high relief and areas of low relief which periodically alternate in the first direction with the first periodicity and are interconnected by the high refractive index material.Type: ApplicationFiled: March 21, 2016Publication date: March 22, 2018Inventors: Jyrki Kimmel, Jan ESKOLIN, Toni JARVENPAA, Jari TURUNEN, Jyrki SAARINEN, Seppo HONKANEN
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Publication number: 20140359718Abstract: The system has monitoring devices, a control unit, a personal identifier for each user, and a remote server which includes a premises-management software stored in a memory device. At least some of the monitoring devices are provided with a router. Monitoring devices are connected to the control unit, and monitoring devices provided with a router are further connected to each other. The control unit is connected to the remote server via the internet. A user may log in as the user of a workstation with the help of the identifier in the monitoring device. With the help of the terminal, the user may also sign in to the management software, from which he can see the state of the workstations and reserve a vacant workstation for himself.Type: ApplicationFiled: September 14, 2012Publication date: December 4, 2014Inventors: Jari Turunen, Heli Etuaro, Juha Luotio, Tuomas Tolvanen
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Patent number: 7712942Abstract: A light pipe includes a light input end and a diffractive structure. The diffractive structure includes elongated formations having diffractive properties for coupling light out from the light pipe to provide backlighting of a flat-panel display. The elongated formations are curved, the curvature being dependent on the location of a light source at the light input end.Type: GrantFiled: April 14, 2006Date of Patent: May 11, 2010Assignee: Nokia CorporationInventors: Marko Parikka, Markku Kuittinen, Jari Turunen
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Patent number: 7192175Abstract: A light pipe includes a surface provided with a pattern that has diffractive properties, where the pattern has uniform, mutually different areas on the surface such that some of the areas are configured to distribute light from a light input end of the light pipe to form macroscopically uniform distribution of light and some other areas are configured to couple light out from the light pipe in order to produce lighting, and where the relative proportion of surface covered by areas configured to distribute light is arranged to decrease in relation to increase of distance from the light input end.Type: GrantFiled: March 14, 2005Date of Patent: March 20, 2007Assignee: Nokia Mobile Phones, Ltd.Inventors: Marko Parikka, Markku Kuittinen, Jari Turunen
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Patent number: 7149385Abstract: The invention relates to a method and an apparatus for manufacturing an optical coupling arrangement, and a specific coupling arrangement. A substrate waveguide (306) and at least one coupling element (304, 306) in the coupling arrangement are made of polymer material in the same replication process at the same time. At least one diffractive coupling element (304, 306) is then formed in the polymer material by placing the polymer material against a replication mould, which comprises a surface profile model of at least one diffractive coupling element (304, 306) that is patterned into the replication mould by means of micro lithography.Type: GrantFiled: April 11, 2002Date of Patent: December 12, 2006Assignee: Nokia CorporationInventors: Marko Parikka, Jari Turunen
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Patent number: 7114820Abstract: The invention relates to a new light pipe (313) for providing backlighting (312) of a flat-panel display (311) by means of at least one light source so that the light pipe has at least one surface which comprises patterns. The patterns have diffraction properties for conducting the light in the direction of the display, and the patterns comprise uniform, mutually different areas having a certain distribution on the surface of the light pipe. The local outcoupling efficiency of the light pipe depends on the characteristic properties of the patterns, which are dependent on the distance to the light source or its wavelength.Type: GrantFiled: December 29, 1999Date of Patent: October 3, 2006Assignee: Nokia Mobile Phones, Ltd.Inventors: Marko Parikka, Markku Kuittinen, Jari Turunen
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Publication number: 20060187677Abstract: A light pipe includes a light input end and a diffractive structure. The diffractive structure includes elongated formations having diffractive properties for coupling light out from the light pipe to provide backlighting of a flat-panel display. The elongated formations are curved, the curvature being dependent on the location of a light source at the light input end.Type: ApplicationFiled: April 14, 2006Publication date: August 24, 2006Inventors: Marko Parikka, Markku Kuittinen, Jari Turunen
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Publication number: 20050213348Abstract: The invention relates to a new light pipe (313) for providing backlighting (312) of a flat-panel display (311) by means of at least one light source so that the light pipe has at least one surface which comprises patterns. The patterns have diffraction properties for conducting the light in the direction of the display, and the patterns comprise uniform, mutually different areas having a certain distribution on the surface of the light pipe. The local outcoupling efficiency of the light pipe depends on the characteristic properties of the patterns, which are dependent on the distance to the light source or its wavelength.Type: ApplicationFiled: March 14, 2005Publication date: September 29, 2005Inventors: Marko Parikka, Markku Kuittinen, Jari Turunen
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Publication number: 20040165268Abstract: A new method is introduced to shape the intensity distribution and improve the quality of a beam emitted by a spatially partially coherent source with the aid of a periodic diffractive optical element (704). Periodic diffractive elements are not suitable for shaping spatially coherent light fields in the sense described in the invention because of the appearance of strong constructive interference effects, but the partial spatial coherence of light fields emitted by multimode sources suppresses these effects. The invention can be applied to shaping of intensity distributions emitted by lasers, light-emitting diodes, or optical fibers either, at a finite distance from the source (703) or in the far field. The invention is particularly advantageous in the shaping and quality improvement of beams emanating from high-power excimer lasers, semiconductor lasers, resonance-cavity light-emitting diodes, or arrays of lasers or light-emitting diodes (702, 705).Type: ApplicationFiled: January 13, 2004Publication date: August 26, 2004Inventor: Jari Turunen
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Publication number: 20040109642Abstract: The invention relates to a method and an apparatus for manufacturing an optical coupling arrangement, and a specific coupling arrangement. A substrate waveguide (306) and at least one coupling element (304, 306) in the coupling arrangement are made of polymer material in the same replication process at the same time. At least one diffractive coupling element (304, 306) is then formed in the polymer material by placing the polymer material against a replication mould, which comprises a surface profile model of at least one diffractive coupling element (304, 306) that is patterned into the replication mould by means of micro lithography.Type: ApplicationFiled: October 14, 2003Publication date: June 10, 2004Inventors: Marko Parikka, Jari Turunen