Patents Assigned to Nanophotonics Co., Ltd.
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Patent number: 8482595Abstract: The present invention provides methods of obtaining panoramic images that appear most natural to the naked eye by executing a mathematically precise image processing operation on a wide-angle image acquired using a wide-angle lens that is rotationally symmetric about an optical axis, and devices using the methods. Imaging systems using this method can be used not only in security•surveillance applications for indoor and outdoor environments, but also in diverse areas such as video phones for apartment entrance doors, rear view cameras for vehicles, visual sensors for unmanned aerial vehicles and robots, and broadcasting cameras. Also, it can be used to obtain panoramic photographs using digital cameras.Type: GrantFiled: July 24, 2008Date of Patent: July 9, 2013Assignee: Nanophotonics Co., Ltd.Inventor: Gyeong-il Kweon
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Publication number: 20120098926Abstract: The present invention provides a method for obtaining a composite image, which performs a mathematically correct image-processing on images obtained by wide-angle lenses which are rotationally symmetrical with regard to an optical axis, to achieve a desirable projection system. The present invention also provides a variety of imaging systems using the method. Further, the present invention provides a CMOS image sensor which has an accurate arrangement of pixels to perform image processing using hardware without the need for image processing by software.Type: ApplicationFiled: July 7, 2010Publication date: April 26, 2012Applicant: NANOPHOTONICS CO., LTD.Inventor: Gyeongil Kweon
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Patent number: 8064149Abstract: Disclosed is a fisheye lens comprised of the first through the seventh lens elements: wherein a field of view is larger than 180° a calibrated distortion is 10% or less, a relative illumination is 80% or more, all the refractive surfaces of the lens elements are spherical surfaces, the first lens element is a negative meniscus lens element having a convex surface facing an object side, the second lens element is a bi-concave lens element, the third lens element is a positive meniscus lens element having a convex surface facing an image side, a stop is located between the third and the fourth lens elements, the fourth lens element is a bi-convex lens element, the fifth lens element is a bi-concave lens element, the sixth and the seventh lens elements are bi-convex lens elements.Type: GrantFiled: December 23, 2008Date of Patent: November 22, 2011Assignee: Nanophotonics Co., Ltd.Inventors: Gyeongil Kweon, Milton Laikin
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Publication number: 20110181689Abstract: The present invention provides methods of obtaining panoramic images that appear most natural to the naked eye by executing a mathematically precise image processing operation on a wide-angle image acquired using a wide-angle lens that is rotationally symmetric about an optical axis, and devices using the methods. Imaging systems using this method can be used not only in security surveillance applications for indoor and outdoor environments, but also in diverse areas such as video phones for apartment entrance doors, rear view cameras for vehicles, visual sensors for unmanned aerial vehicles and robots, and broadcasting cameras. Also, it can be used to obtain panoramic photographs using digital cameras.Type: ApplicationFiled: July 24, 2008Publication date: July 28, 2011Applicant: NANOPHOTONICS CO., LTD.Inventor: Gyeong-il Kweon
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Publication number: 20100277816Abstract: Disclosed is a fisheye lens comprised of the first through the seventh lens elements: wherein a field of view is larger than 180° a calibrated distortion is 10% or less, a relative illumination is 80% or more, all the refractive surfaces of the lens elements are spherical surfaces, the first lens element is a negative meniscus lens element having a convex surface facing an object side, the second lens element is a bi-concave lens element, the third lens element is a positive meniscus lens element having a convex surface facing an image side, a stop is located between the third and the fourth lens elements, the fourth lens element is a bi-convex lens element, the fifth lens element is a bi-concave lens element, the sixth and the seventh lens elements are bi-convex lens elements.Type: ApplicationFiled: December 23, 2008Publication date: November 4, 2010Applicant: NANOPHOTONICS CO., LTD.Inventors: Gyeongil Kweon, Milton Laikin
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Publication number: 20100208032Abstract: The present invention provides mathematically accurate image processing algorithms for extracting natural looking panoramic images and distortion-free rectilinear images from images acquired using a camera equipped with a wide-angle lens which is rotationally symmetric about an optical axis and devices implementing such algorithms. Imaging systems using this method can be used not only in security•surveillance applications for indoor and outdoor environments, but also in diverse areas such as video phone for apartment entrance door, rear view camera for vehicles, visual sensor for unmanned aerial vehicles and robots, camera phone, PC camera, and broadcasting camera. Also, it can be used to obtain panoramic or rectilinear photographs using a digital camera.Type: ApplicationFiled: July 24, 2008Publication date: August 19, 2010Applicant: NANOPHOTONICS CO., LTD.Inventor: Gyeongil Kweon
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Patent number: 7612946Abstract: The present invention provides new projection schemes for wide angle imaging lenses rotationally symmetric about optical axis wherein the field of view of lenses and the size of image sensors are directly reflected without any reference to the effective focal length of the lenses. This invention also provides explicit examples of wide-angle lenses implementing the newly developed projection schemes. According to the present invention, by providing new projection schemes explicitly reflecting the physical quantities of direct interest to the user for industrial applicability, namely, the field of view and the image sensor size, it is possible to realize wide-angle lenses providing the most satisfactory images.Type: GrantFiled: October 24, 2007Date of Patent: November 3, 2009Assignee: Nanophotonics Co., Ltd.Inventors: Gyeong Kweon, II, Milton Laikin
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Publication number: 20090052050Abstract: The present invention provides new projection schemes for wide angle imaging lenses rotationally symmetric about optical axis wherein the field of view of lenses and the size of image sensors are directly reflected without any reference to the effective focal length of the lenses. This invention also provides explicit examples of wide-angle lenses implementing the newly developed projection schemes. According to the present invention, by providing new projection schemes explicitly reflecting the physical quantities of direct interest to the user for industrial applicability, namely, the field of view and the image sensor size, it is possible to realize wide-angle lenses providing the most satisfactory images.Type: ApplicationFiled: October 24, 2007Publication date: February 26, 2009Applicant: NANOPHOTONICS CO., LTDInventors: Gyeong II Kweon, Milton Laikin