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公开(公告)号：US10034606B2
公开(公告)日：2018-07-31
申请号：US15314463
申请日：2015-04-30
Applicant: NIDEK CO., LTD.
Inventor： Cesare Tanassi , Phil Buscemi , Federico Carraro , Andrea De Giusti , Mattia Minozzi , Simone Pajaro , Michele Pascolini , Nicola Codogno
CPC classification number: A61B3/117 , A61B3/0025 , A61B3/0091 , A61B3/14
Abstract: An optical equipment suitable for observation of an iridocorneal annular zone of an eye including: an illumination assembly, including at least one illumination electric device for illuminating the zone with a plurality of illumination optical paths for illumination light beams going to a corresponding plurality of sub-portions, an image capturing assembly, including at least one image capturing electric device for capturing images of the zone with a plurality of imaging optical paths for imaging light beams coming from a corresponding plurality of sub-portions, and a front optical assembly having a front surface located close to front surface of an eye, a rear surface located far from front surface of an eye, and including a central portion between the front and rear surfaces and a lateral portion around the central portion; the front optical assembly is stationary; all imaging optical paths pass through central portion between the front and rear surfaces.
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公开(公告)号：US12079958B2
公开(公告)日：2024-09-03
申请号：US17602622
申请日：2020-04-15
Applicant: NIDEK CO. LTD.
Inventor： Andrea Peroni , Andrea De Giusti , Michele Pascolini , Mattia Minozzi , Simone Pajaro
CPC classification number: G06T5/50 , G06T5/70 , G06T5/90 , G06T7/13 , G06T7/30 , G06T2207/20028 , G06T2207/30041
Abstract: The method is used for creating an all-in-focus image of a portion of an iridocorneal angle of an eye starting from a plurality of images (610), these images being shallow field-depth images of that portion taken with different focus planes but with a same image frame; the method comprises the steps of: A) pre-processing (620) said plurality of images so to obtain a plurality of single-channel images if the images of said plurality are color images, B) calculating (630) an initial focus map starting from said plurality of single-channel images, C) creating (640) an initial estimated all-in-focus image starting from said initial focus map and said plurality of single-channel images, D) calculating (650) an initial edge map starting from said initial focus map and said plurality of single-channel images, E) iterating (660) a regularization process until a stop regularization condition is met, wherein the regularization process comprises removing one or more edge points of the initial edge map by considering a reference model of an iridocorneal angle of an eye, F) creating (670) said all-in-focus image starting from said plurality of images and a focus map last calculated in step E; the reference model expresses at least one geometrical parameter of a surface of an iridocorneal angle of an eye.
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公开(公告)号：US11639848B2
公开(公告)日：2023-05-02
申请号：US17034777
申请日：2020-09-28
Applicant: NIDEK CO., LTD.
Inventor： Michihiro Takii , Kyoji Takeichi , Yuya Nakako , Takaaki Matsui , Mattia Minozzi , Nicola Codogno , Federico Carraro
Abstract: An eyeglass frame shape measurement device includes an optical measurement unit, a probe unit, a holding unit that holds the optical measurement unit and the probe unit, a changing portion that integrally moves the optical measurement unit and the probe unit with respect to an eyeglass frame to change a measurement position with respect to a groove of a rim of the eyeglass frame, and a controller that controls an operation of the eyeglass frame shape measurement device. The controller controls an operation of the changing portion to measure the groove of the rim of the eyeglass frame, acquires a cross-sectional shape of the groove of the rim of the eyeglass frame based on a detection result detected by the optical measurement unit, and acquires a shape of the rim of the eyeglass frame based on a detection result detected by the probe unit.
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