Patents by Inventor Mika Aikio
Mika Aikio 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: 11435592Abstract: The invention relates to a laser projector for presenting an image on a waveguide plane. The projector comprises a laser source (10, 10A, 10B, 10C) capable of emitting a polychromatic light beam (11) or a plurality of narrow-wavelength light beams (11A, 11B, 11C), and a guidance element (12A, 12B) for directing light emitted by the light source to different pupils (16A, 16B, 16C) of the waveguide plane, the different pupils being displaced with respect to each other in the waveguide plane. The invention also concerns a personal display device comprising such projector.Type: GrantFiled: December 14, 2018Date of Patent: September 6, 2022Assignee: DISPELIX OYInventors: Kasimir Blomstedt, Juuso Olkkonen, Mika Aikio
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Patent number: 11391943Abstract: The invention concerns a multi-pupil lightguide element, a diffractive personal display, multi-pupil projector, a method for displaying an image and a use. The element comprises lightguide means, diffractive in-coupling means for coupling an image directed to the in-coupling means into the lightguide means, and diffractive out-coupling means for coupling said image out of the lightguide means. According to the invention, the diffractive in-coupling means comprise at least two in-coupling gratings laterally displaced from each other on said lightguide means for receiving segments of said image, and the diffractive out-coupling means is optically associated with said at least two in-coupling gratings for reproducing said image from said image segments. The invention allows for expanding the field-of-view of near-to-eye displays, for example.Type: GrantFiled: May 8, 2018Date of Patent: July 19, 2022Assignee: Dispelix OyInventors: Juuso Olkkonen, Mika Aikio, Antti Sunnari
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Patent number: 11366317Abstract: The invention relates to a waveguide display element comprising a waveguide comprising at least three waveguide layers stacked on top of each other. There is also provided diffractive in-coupling gratings associated with each waveguide layer and being displaced with respect to each other in the plane of the layers, the in-coupling gratings forming input pupils for different light wavelength ranges coupled to the waveguide, and a diffractive out-coupling means for coupling light in-coupled through the pupils and propagating in the layers out of the waveguide such that a polychromatic image is formed. The invention also concerns a personal display device comprising such element.Type: GrantFiled: December 14, 2018Date of Patent: June 21, 2022Assignee: DISPELIX OYInventors: Kasimir Blomstedt, Juuso Olkkonen, Mika Aikio
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Patent number: 11275234Abstract: The invention concerns a projection objective and a waveguide display. The objective is adapted to project an image from a first plane to a second plane and comprises in order from the second plane a first optical element group having a positive effective focal length, a second optical element group placed between the first plane and the first optical element group and having a negative effective focal length, and a third optical element group placed between the first plane and the second optical element group and having a positive effective focal length. Counting from the second plane, the first refractive surface of the second optical element group is concave towards the second plane and the second refractive surface of the third optical element group is convex towards the first plane. The objective suits well for projecting images to diffractive optical displays.Type: GrantFiled: May 18, 2018Date of Patent: March 15, 2022Assignee: Dispelix OyInventor: Mika Aikio
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Patent number: 11237380Abstract: The invention relates to personal display devices and in particular an eyepiece therefor. The eyepiece is adapted for projecting an image from an image plane on one side of the eyepiece through an exit pupil on the opposite side of the eyepiece and comprises at least one stationary lens group and at least two movable lens groups being movable with respect to the stationary lens group along an optical axis between the image plane and the exit pupil. According to the invention, the lens groups are arranged in positive-negative-positive configuration and the movable lens groups are arranged to move along the optical axis between a first state providing a first field-of-view and a second state providing a second field-of-view smaller than the first field-of-view to the image plane. The invention allows for improving optical performance and user experience of personal display devices.Type: GrantFiled: May 18, 2018Date of Patent: February 1, 2022Assignee: Dispelix OyInventor: Mika Aikio
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Publication number: 20210157108Abstract: The invention concerns a projection objective and a waveguide display. The objective is adapted to project an image from a first plane to a second plane and comprises in order from the second plane a first optical element group having a positive effective focal length, a second optical element group placed between the first plane and the first optical element group and having a negative effective focal length, and a third optical element group placed between the first plane and the second optical element group and having a positive effective focal length. Counting from the second plane, the first refractive surface of the second optical element group is concave towards the second plane and the second refractive surface of the third optical element group is convex towards the first plane. The objective suits well for projecting images to diffractive optical displays.Type: ApplicationFiled: May 18, 2018Publication date: May 27, 2021Inventor: Mika Aikio
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Publication number: 20210088798Abstract: The invention relates to a laser projector for presenting an image on a waveguide plane. The projector comprises a laser source (10, 10A, 10B, 10C) capable of emitting a polychromatic light beam (11) or a plurality of narrow-wavelength light beams (11A, 11B, 11C), and a guidance element (12A, 12B) for directing light emitted by the light source to different pupils (16A, 16B, 16C) of the waveguide plane, the different pupils being displaced with respect to each other in the waveguide plane. The invention also concerns a personal display device comprising such projector.Type: ApplicationFiled: December 14, 2018Publication date: March 25, 2021Applicant: DISPELIX OYInventors: Kasimir BLOMSTEDT, Juuso OLKKONEN, Mika AIKIO
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Publication number: 20200393674Abstract: The invention relates to a waveguide display element (20) comprising a waveguide comprising at least three waveguide N layers (14A-14C) stacked on top of each other. There is also provided diffractive in-coupling gratings (16A-16C) associated with each waveguide layer (14A-14C) and being displaced with respect to each other in the plane of the layers, the in-coupling gratings (16A-16C) forming input pupils for different light wavelength ranges (13A-13C) coupled to the waveguide, and a diffractive out-coupling means (18) for coupling light in-coupled through the pupils and propagating in the layers out of the waveguide such that a polychromatic image is formed. The invention also concerns a personal display device comprising such element.Type: ApplicationFiled: December 14, 2018Publication date: December 17, 2020Applicant: DISPELIX OYInventors: Kasimir BLOMSTEDT, Juuso OLKKONEN, Mika AIKIO
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Publication number: 20200116991Abstract: The invention relates to personal display devices and in particular an eyepiece therefor. The eyepiece is adapted for projecting an image from an image plane on one side of the eyepiece through an exit pupil on the opposite side of the eyepiece and comprises at least one stationary lens group and at least two movable lens groups being movable with respect to the stationary lens group along an optical axis between the image plane and the exit pupil. According to the invention, the lens groups are arranged in positive-negative-positive configuration and the movable lens groups are arranged to move along the optical axis between a first state providing a first field-of-view and a second state providing a second field-of-view smaller than the first field-of-view to the image plane. The invention allows for improving optical performance and user experience of personal display devices.Type: ApplicationFiled: May 18, 2018Publication date: April 16, 2020Inventor: Mika Aikio
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Publication number: 20200081246Abstract: The invention concerns a multi-pupil lightguide element, a diffractive personal display, multi-pupil projector, a method for displaying an image and a use. The element comprises lightguide means, diffractive in-coupling means for coupling an image directed to the in-coupling means into the lightguide means, and diffractive out-coupling means for coupling said image out of the lightguide means. According to the invention, the diffractive in-coupling means comprise at least two in-coupling gratings laterally displaced from each other on said lightguide means for receiving segments of said image, and the diffractive out-coupling means is optically associated with said at least two in-coupling gratings for reproducing said image from said image segments. The invention allows for expanding the field-of-view of near-to-eye displays, for example.Type: ApplicationFiled: May 8, 2018Publication date: March 12, 2020Inventors: Juuso Olkkonen, Mika Aikio, Antti Sunnari
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Publication number: 20150346582Abstract: A panoramic camera includes an input element, an aperture stop, and a focusing unit, where the input element and the focusing unit are arranged to form an annular optical image on an image plane, and the aperture stop defines an entrance pupil of the imaging device such that the effective F-number of the imaging device is in the range of 1.0 to 5.6.Type: ApplicationFiled: May 29, 2015Publication date: December 3, 2015Inventors: Mika Aikio, Jukka-Tapani Makinen
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Patent number: 9195038Abstract: The invention relates to an omnidirectional lens, an optical measuring device, and a method for optical measurement. The lens comprises a central portion, collecting optically in a first direction, and an edge portion, which surrounds the central portion, and which is arranged to guide the light arriving at the edge portion omnidirectionally relative to the said first direction essentially transversely relative to the said first direction. According to the invention, the edge portion is arranged to guide the light through the central portion. With the aid of the invention, it is possible to create, for example, a simpler laser radar.Type: GrantFiled: January 21, 2011Date of Patent: November 24, 2015Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTTInventor: Mika Aikio
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Patent number: 8723955Abstract: An apparatus for spatially resolved detection of objects has transmission and reception devices, in which transmission and reception regions overlap or intersect in a detection region which is disposed within a monitored zone. The monitored zone covers a detection angle in which the transmitted radiation is reflected by objects. An imaging arrangement is disposed in the propagation path of the transmitted radiation and/or of the reflected radiation and covers the total detection region at the transmission side and/or at the reception side at all times. Spatial resolution is used for influencing the propagation direction of the radiation and/or for the operation of the reception device, in a time varying manner, such that the spacing of the detection region relative to the imaging arrangement and/or the size of the detection region determined by the degree to which the transmission region and the reception region overlap or intersect changes.Type: GrantFiled: December 22, 2009Date of Patent: May 13, 2014Assignee: Sick AGInventors: Michael Kiehn, Mauri Aikio, Mika Aikio
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Publication number: 20100165082Abstract: The invention relates to an apparatus for the spatially resolved detection of objects located in a monitored zone, having a transmission device for the transmission of electromagnetic radiation into a transmission region, having a reception device for the reception of radiation reflected from a reception region, wherein the transmission region and the reception region overlap or intersect in a detection region which is disposed within the monitored zone, which covers a detection angle and in which the transmitted radiation is reflected by objects, having an imaging arrangement which is disposed in the propagation path of the transmitted radiation and/or of the reflected radiation and which covers the total detection region at the transmission side and/or at the reception side at all times; and having spatial resolution means for the influencing of the propagation direction of the radiation and/or for the operation of the reception device, in particular in a time varying manner, such that the position, in partType: ApplicationFiled: December 22, 2009Publication date: July 1, 2010Applicant: SICK AGInventors: Michael Kiehn, Mauri Aikio, Mika Aikio