JP2009291253A5 - - Google Patents
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- JP2009291253A5 JP2009291253A5 JP2008145161A JP2008145161A JP2009291253A5 JP 2009291253 A5 JP2009291253 A5 JP 2009291253A5 JP 2008145161 A JP2008145161 A JP 2008145161A JP 2008145161 A JP2008145161 A JP 2008145161A JP 2009291253 A5 JP2009291253 A5 JP 2009291253A5
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- JP
- Japan
- Prior art keywords
- light
- fundus
- eye
- examined
- optical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003287 optical Effects 0.000 claims 12
- 238000003384 imaging method Methods 0.000 claims 4
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000000875 corresponding Effects 0.000 claims 1
- 230000001678 irradiating Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
Claims (3)
前記駆動機構の駆動を制御すると共に、前記受光素子から出力される受光信号に基づいて被検眼の眼底画像を取得する制御手段と、を備え、
前記制御手段は、
前記フォーカス用光学部材を移動させ、複数の位置での画像を取得し、
複数の位置で取得された画像の輝度の度数分布をそれぞれ求め、該度数分布を用いて，前記光学部材の位置に対する所定の閾値以上の度数を持つ輝度値の変化特性を求め、
該変化特性に基づいて前記フォーカス用光学部材のフォーカス位置を求め、該フォーカス位置に対応する位置にフォーカス用光学部材を移動させることを特徴とする眼科撮影装置。 A light source for irradiating light toward the fundus of the eye to be examined, a focusing optical member arranged to be movable in the optical axis direction by a drive mechanism, and a light receiving element for receiving reflected light from the fundus of the eye to be examined A photographing optical system for photographing a fundus image of the eye to be examined;
Control means for controlling driving of the drive mechanism, and acquiring a fundus image of the eye to be examined based on a light reception signal output from the light receiving element,
The control means includes
Moving the focusing optical member to obtain images at a plurality of positions;
Obtaining a luminance frequency distribution of images acquired at a plurality of positions, and using the frequency distribution, obtaining a change characteristic of a luminance value having a frequency equal to or higher than a predetermined threshold with respect to the position of the optical member;
An ophthalmologic photographing apparatus comprising: obtaining a focus position of the focus optical member based on the change characteristic; and moving the focus optical member to a position corresponding to the focus position.
前記撮影光学系は、被検眼の眼底正面画像を取得するための撮影光学系であって、
前記制御手段は、前記受光素子から出力される受光信号に基づいて眼底正面画像を取得し、該正面画像を微分処理し、微分処理された前記正面画像内の輝度の度数分布を求めることを特徴とする眼科撮影装置。 The ophthalmologic photographing apparatus according to claim 1.
The imaging optical system is an imaging optical system for acquiring a fundus front image of the eye to be examined,
The control means acquires a fundus front image based on a light reception signal output from the light receiving element, differentiates the front image, and obtains a frequency distribution of luminance in the differentiated front image. Ophthalmic imaging device.
前記撮影光学系は、前記光源から発せられた光を前記被検眼眼底上で走査させる光スキャナーを有し、前記測定光による被検眼眼底からの反射光と参照光との干渉光を前記受光素子により受光し、被検眼の眼底断層画像を取得するための撮影光学系であって、
前記制御手段は、前記受光素子から出力される受光信号に基づいて眼底断層画像を取得し、前記断層画像内の輝度の度数分布を求めることを特徴とする眼科撮影装置。 The ophthalmologic photographing apparatus according to claim 1.
The photographing optical system includes an optical scanner that scans light emitted from the light source on the fundus of the eye to be examined, and receives light that is reflected by the measurement light from the fundus of the eye to be examined and reference light. An imaging optical system for receiving a tomographic image of the eye to be examined,
The ophthalmologic photographing apparatus characterized in that the control means acquires a fundus tomographic image based on a light reception signal output from the light receiving element, and obtains a luminance frequency distribution in the tomographic image.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008145161A JP5179265B2 (en) | 2008-06-02 | 2008-06-02 | Ophthalmic imaging equipment |
| EP09161689.6A EP2130486B1 (en) | 2008-06-02 | 2009-06-02 | Ophthalmic Photographing Apparatus |
| US12/457,160 US7824035B2 (en) | 2008-06-02 | 2009-06-02 | Ophthalmic photographing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008145161A JP5179265B2 (en) | 2008-06-02 | 2008-06-02 | Ophthalmic imaging equipment |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2009291253A JP2009291253A (en) | 2009-12-17 |
| JP2009291253A5 true JP2009291253A5 (en) | 2011-07-14 |
| JP5179265B2 JP5179265B2 (en) | 2013-04-10 |
Family
ID=41540023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008145161A Active JP5179265B2 (en) | 2008-06-02 | 2008-06-02 | Ophthalmic imaging equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5179265B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5701660B2 (en) * | 2011-03-31 | 2015-04-15 | 株式会社ニデック | Fundus photographing device |
| JP2013075035A (en) * | 2011-09-30 | 2013-04-25 | Canon Inc | Ophthalmic apparatus, ophthalmic image processing method, and recording medium |
| JP6007527B2 (en) | 2012-03-13 | 2016-10-12 | 株式会社ニデック | Fundus photographing device |
| JP6045895B2 (en) * | 2012-10-01 | 2016-12-14 | 株式会社トプコン | Ophthalmic observation device |
| JP6159454B2 (en) * | 2012-10-01 | 2017-07-05 | 株式会社トプコン | Ophthalmic observation device |
| JP6160807B2 (en) * | 2013-01-23 | 2017-07-12 | 株式会社ニデック | Ophthalmic photographing apparatus and ophthalmic photographing program |
| WO2016159332A1 (en) * | 2015-03-31 | 2016-10-06 | 株式会社ニデック | Ophthalmic laser surgery device and ophthalmic laser surgery control program |
| JP6611593B2 (en) * | 2015-04-23 | 2019-11-27 | キヤノン株式会社 | Information processing apparatus, information processing method, and program |
| JP7281906B2 (en) * | 2019-01-16 | 2023-05-26 | 株式会社トプコン | Ophthalmic device, its control method, program, and recording medium |
| CN112168132B (en) * | 2020-11-09 | 2022-11-08 | 苏州大学 | Method for performing fundus refraction compensation judgment and imaging optimization by using OCT (optical coherence tomography) signals |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0711619B2 (en) * | 1987-11-24 | 1995-02-08 | 富士写真フイルム株式会社 | Image detection method |
| JPH11197109A (en) * | 1998-01-19 | 1999-07-27 | Kowa Co | Scanning type laser ophthalmoscope |
| JP4566685B2 (en) * | 2004-10-13 | 2010-10-20 | 株式会社トプコン | Optical image measuring device and optical image measuring method |
| JP4837982B2 (en) * | 2005-11-30 | 2011-12-14 | 株式会社ニデック | Ophthalmic equipment |
| JP4822969B2 (en) * | 2006-07-27 | 2011-11-24 | 株式会社ニデック | Ophthalmic imaging equipment |
| JP4996917B2 (en) * | 2006-12-26 | 2012-08-08 | 株式会社トプコン | Optical image measurement device and program for controlling optical image measurement device |
-
2008
- 2008-06-02 JP JP2008145161A patent/JP5179265B2/en active Active
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