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公开(公告)号：EP3260036A1
公开(公告)日：2017-12-27
申请号：EP16727276.4
申请日：2016-02-08
申请人： HOYA Corporation
发明人： HAYASHI, Yoshihiro , IKEDA, Yuuki , MASUKAWA, Yuya
IPC分类号： A61B1/06
CPC分类号： A61B5/14552 , A61B1/00009 , A61B1/00163 , A61B1/045 , A61B1/06 , A61B1/0638 , A61B1/0646 , A61B1/0661
摘要： A light source device is configured to have a light source configured to emit white light, a rotatable turret provided with multiple kinds of predetermined light passing areas respectively extract light components having different wavelength ranges from the white light incident from the light source, the multiple kinds of predetermined light passing areas being arranged in a circumferential direction of the rotatable turret, and white light passing areas each allowing the white light to pass therethrough being arranged in the circumferential direction of the rotatable turret and between the predetermined wavelength light passing areas, and a driving means configured rotate the rotatable turret so that the multiple kinds of predetermined wavelength light passing areas and the white light passing areas are alternately inserted into a light path of the white light one by one at a timing which is synchronized with a predetermined photographing period.
摘要翻译： 光源装置被构造成具有被配置为发射白光的光源，被提供有多种预定光通过区域的可旋转转台分别从与从光源入射的白光不同的波长范围提取光成分，多种 预定光通过区域沿可转动转台的圆周方向排列，每个允许白光通过的白色光通过区域沿可转动转台的圆周方向布置在预定波长光通过区域之间， 配置的旋转驱动装置旋转可转动的转台，使得多种预定波长的光通过区域和白光通过区域在与预定的拍摄时段同步的时刻交替地插入白光的光路中。
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公开(公告)号：EP4442189A2
公开(公告)日：2024-10-09
申请号：EP24163452.6
申请日：2020-09-25
申请人： HOYA CORPORATION
发明人： HAYASHI, Yoshihiro , MAKINO, Takao
IPC分类号： A61B1/07
CPC分类号： A61B1/045 , A61B1/0655 , A61B1/00009 , A61B1/0669 , A61B1/07 , A61B1/05 , A61B1/00091 , A61B1/00045
摘要： Adjustment processing including an adjustment level for suppressing occurrence of an artifact along a line corresponding to a scanning line of an image sensor in the frame image is performed when a biological tissue is imaged as a moving image by a rolling shutter method.
An endoscope system includes: a light source device; an electronic endoscope including an image sensor that images a biological tissue by a rolling shutter method; and a processor including an adjustment unit that is a part adjusting luminance of the frame image by combining adjustment of an exposure time of the image sensor with at least one of adjustment of light intensity of the illumination light and gain adjustment for determining a signal level of the frame image obtained from the image sensor, the adjustment unit determining whether or not a motion amount of an object image in the captured image or information regarding a blurring amount satisfies an adjustment condition and performing the adjustment processing by adjusting an adjustment level representing a degree of strength of the adjustment processing by a magnitude of a value according to at least the determination result.-
公开(公告)号：EP4400029A1
公开(公告)日：2024-07-17
申请号：EP22867105.3
申请日：2022-07-27
申请人： HOYA CORPORATION
发明人： HAYASHI, Yoshihiro
摘要： The present disclosure proposes a light source device that generates illumination light to be applied to an object in order to enable light amount control to be executed quickly in response to a change during a rolling shutter period (pixel readout period) while avoiding the occurrence of distortion and artifacts caused by a rolling shutter of an image sensor, and includes a plurality of semiconductor light emitting elements that emit pieces of light having different wavelength bands, and a control unit that controls a light emission profile of the plurality of semiconductor light emitting elements and drives the plurality of semiconductor light emitting elements, in which the control unit controls the light emission profile of the plurality of semiconductor light emitting elements such that main light emission is performed in a pseudo global exposure period of an image sensor and preliminary light emission is performed in at least a part of a pixel readout period of the image sensor, and a light emission level of the preliminary light emission is lower than a light emission level of the main light emission
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公开(公告)号：EP4197423A1
公开(公告)日：2023-06-21
申请号：EP21889224.8
申请日：2021-11-04
申请人： HOYA CORPORATION
摘要： The present disclosure proposes a technique for securing a sufficient light amount while avoiding occurrence of distortion and artifacts caused by a rolling shutter, and making brightness unevenness and lateral stripes less noticeable even if change in a pulse light emitting organ extends over a rolling shutter period. Thus, a light source device according to the present disclosure is a light source device that generates illumination light with which an object is to be irradiated, the light source device including: a plurality of semiconductor light emitting elements configured to emit light having different wavelength bands; and a control unit configured to control a light emission profile of the plurality of semiconductor light emitting elements and drive the plurality of semiconductor light emitting elements, in which the control unit extends the light emission profile in a first direction that is a direction opposite to a direction in which time progresses in a case of increasing an exposure level and shortens the light emission profile from a second direction that is the direction in which time progresses in a case of decreasing the exposure level (see Fig. 12 ).
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公开(公告)号：EP4179956A1
公开(公告)日：2023-05-17
申请号：EP21885768.8
申请日：2021-09-22
申请人： HOYA CORPORATION
摘要： A sufficient amount of light is ensured while avoiding the occurrence of distortions and artifacts caused by a rolling shutter, and brightness unevenness and horizontal stripes are made less noticeable even when a change in a pulsed light emission organ occurs over a rolling shutter period. To this end, the present disclosure proposes a light source device (201) that generates illumination light with which an object is irradiated, the light source device (201) including: a plurality of semiconductor light emitting elements that emit light beams having different wavelength bands from each other; and a control unit that controls a light emission profile of the plurality of semiconductor light emitting elements and drives the plurality of semiconductor light emitting elements, in which the light emission profile includes a strong light emission period in which light emission is performed with a predetermined light intensity and a weak light emission period in which light emission is performed with a light intensity weaker than the predetermined light intensity, and the control unit executes a restoration control process of converting a light emission amount in the weak light emission period into a light emission amount in the strong light emission period while maintaining a total amount of the light emission amount in the strong light emission period and the light emission amount in the weak light emission period constant
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公开(公告)号：EP4046564A1
公开(公告)日：2022-08-24
申请号：EP20876652.7
申请日：2020-09-25
申请人： HOYA CORPORATION
发明人： HAYASHI, Yoshihiro , MAKINO, Takao
摘要： Adjustment processing including an adjustment level for suppressing occurrence of an artifact along a line corresponding to a scanning line of an image sensor in the frame image is performed when a biological tissue is imaged as a moving image by a rolling shutter method.
An endoscope system includes: a light source device; an electronic endoscope including an image sensor that images a biological tissue by a rolling shutter method; and a processor including an adjustment unit that is a part adjusting luminance of the frame image by combining adjustment of an exposure time of the image sensor with at least one of adjustment of light intensity of the illumination light and gain adjustment for determining a signal level of the frame image obtained from the image sensor, the adjustment unit determining whether or not a motion amount of an object image in the captured image or information regarding a blurring amount satisfies an adjustment condition and performing the adjustment processing by adjusting an adjustment level representing a degree of strength of the adjustment processing by a magnitude of a value according to at least the determination result.
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