FUNDUS PHOTOGRAPHING DEVICE
A fundus photographing device having a fundus photographing optical system for photographing a fundus of an examinee's eye, comprising: an alignment index projecting means that includes light sources for alignment placed symmetrically with respect to a photographing optical axis and is arranged...
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| creator | VIOLA, MARCO UENO, TOKIO LIA, CESARIO |
| description | A fundus photographing device having a fundus photographing optical system for photographing a fundus of an examinee's eye, comprising: an alignment index projecting means that includes light sources for alignment placed symmetrically with respect to a photographing optical axis and is arranged to project a pair of alignment indexes onto the examinee's eye; an anterior segment photographing means that is arranged to photograph an anterior segment of the examinee's eye on which the alignment indexes are projected by the alignment index projecting means; a pupil center detecting means that is arranged to determine a center of a pupil of the examinee's eye by image processing of an image of the anterior segment photographed by the anterior segment photographing means; an alignment index detecting means that is arranged to determine a middle point of the pair of alignment indexes photographed by the anterior segment photographing means and an interval between the alignment indexes; an alignment information obtaining means that is arranged to obtain alignment information of the device in up and down, and left and right directions relative to the examinee's eye from the detected pupil center and the detected middle point of the pair of alignment indexes and obtain alignment information of the device in back and forth directions relative to the examinee's eye from the detected interval of the alignment indexes; and alignment means that is arranged to make alignment of the device based on the alignment information obtained by the alignment information obtaining means. |
| format | Patent |
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an anterior segment photographing means that is arranged to photograph an anterior segment of the examinee's eye on which the alignment indexes are projected by the alignment index projecting means; a pupil center detecting means that is arranged to determine a center of a pupil of the examinee's eye by image processing of an image of the anterior segment photographed by the anterior segment photographing means; an alignment index detecting means that is arranged to determine a middle point of the pair of alignment indexes photographed by the anterior segment photographing means and an interval between the alignment indexes; an alignment information obtaining means that is arranged to obtain alignment information of the device in up and down, and left and right directions relative to the examinee's eye from the detected pupil center and the detected middle point of the pair of alignment indexes and obtain alignment information of the device in back and forth directions relative to the examinee's eye from the detected interval of the alignment indexes; 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an anterior segment photographing means that is arranged to photograph an anterior segment of the examinee's eye on which the alignment indexes are projected by the alignment index projecting means; a pupil center detecting means that is arranged to determine a center of a pupil of the examinee's eye by image processing of an image of the anterior segment photographed by the anterior segment photographing means; an alignment index detecting means that is arranged to determine a middle point of the pair of alignment indexes photographed by the anterior segment photographing means and an interval between the alignment indexes; an alignment information obtaining means that is arranged to obtain alignment information of the device in up and down, and left and right directions relative to the examinee's eye from the detected pupil center and the detected middle point of the pair of alignment indexes and obtain alignment information of the device in back and forth directions relative to the examinee's eye from the detected interval of the alignment indexes; 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fre ; ger</language><creationdate>2009</creationdate><topic>DIAGNOSIS</topic><topic>HUMAN NECESSITIES</topic><topic>HYGIENE</topic><topic>IDENTIFICATION</topic><topic>MEDICAL OR VETERINARY SCIENCE</topic><topic>SURGERY</topic><toplevel>online_resources</toplevel><creatorcontrib>VIOLA, MARCO</creatorcontrib><creatorcontrib>UENO, TOKIO</creatorcontrib><creatorcontrib>LIA, CESARIO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VIOLA, MARCO</au><au>UENO, TOKIO</au><au>LIA, CESARIO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>FUNDUS PHOTOGRAPHING DEVICE</title><date>2009-11-25</date><risdate>2009</risdate><abstract>A fundus photographing device having a fundus photographing optical system for photographing a fundus of an examinee's eye, comprising: an alignment index projecting means that includes light sources for alignment placed symmetrically with respect to a photographing optical axis and is arranged to project a pair of alignment indexes onto the examinee's eye; an anterior segment photographing means that is arranged to photograph an anterior segment of the examinee's eye on which the alignment indexes are projected by the alignment index projecting means; a pupil center detecting means that is arranged to determine a center of a pupil of the examinee's eye by image processing of an image of the anterior segment photographed by the anterior segment photographing means; an alignment index detecting means that is arranged to determine a middle point of the pair of alignment indexes photographed by the anterior segment photographing means and an interval between the alignment indexes; an alignment information obtaining means that is arranged to obtain alignment information of the device in up and down, and left and right directions relative to the examinee's eye from the detected pupil center and the detected middle point of the pair of alignment indexes and obtain alignment information of the device in back and forth directions relative to the examinee's eye from the detected interval of the alignment indexes; and alignment means that is arranged to make alignment of the device based on the alignment information obtained by the alignment information obtaining means.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY |
| title | FUNDUS PHOTOGRAPHING DEVICE |
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