JP2018023675A5 - - Google Patents
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- JP2018023675A5 JP2018023675A5 JP2016158675A JP2016158675A JP2018023675A5 JP 2018023675 A5 JP2018023675 A5 JP 2018023675A5 JP 2016158675 A JP2016158675 A JP 2016158675A JP 2016158675 A JP2016158675 A JP 2016158675A JP 2018023675 A5 JP2018023675 A5 JP 2018023675A5
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- 230000003287 optical Effects 0.000 claims 64
- 238000003384 imaging method Methods 0.000 claims 48
- 238000005259 measurement Methods 0.000 claims 42
- 210000001747 Pupil Anatomy 0.000 claims 3
- 230000000875 corresponding Effects 0.000 claims 3
- 239000006185 dispersion Substances 0.000 claims 2
- 238000003325 tomography Methods 0.000 claims 2
Claims (20)
前記光源から出射された光を、測定光学系を介して被検眼に照射する測定光と参照光とに分割するとともに、前記被検眼からの前記測定光の戻り光と前記参照光とを合波して得た干渉光に基づいて、前記被検眼の断層の情報を取得する情報取得部と、
前記測定光の光路と前記参照光の光路との間の光路長差を変更する光路長変更手段と、
を備え、
前記測定光学系は、
前記測定光を前記被検眼に合焦させる合焦レンズと、
前記測定光を前記被検眼上で走査する走査手段と、
前記測定光が照射される前記被検眼の部位を切り替える撮像部位切替手段と、
を含み、
前記被検眼の前眼部を撮像する際に、
前記測定光学系の射出瞳が有限の距離に配置されるように、前記被検眼と前記走査手段との間に前記撮像部位切替手段が配置されるとともに、
前記被検眼に対して前記測定光学系が所定の作動距離に配置されるときに前記前眼部に前記測定光が合焦し且つ前記前眼部が撮像範囲に入るように、前記合焦レンズと前記光路長変更手段がそれぞれ所定の位置に配置される、光断層撮像装置。 Light source,
The light emitted from the light source is divided into measurement light and reference light to be irradiated to the eye through the measurement optical system, and the return light of the measurement light from the eye and the reference light are combined. An information acquisition unit for acquiring information of a tomographic image of the subject's eye based on the interference light obtained by
Optical path length changing means for changing an optical path length difference between the optical path of the measurement light and the optical path of the reference light;
Equipped with
The measurement optical system is
A focusing lens for focusing the measurement light on the eye;
A scanning unit configured to scan the measurement light on the subject's eye;
Imaging region switching means for switching a region of the subject's eye to which the measurement light is irradiated;
Including
When imaging the anterior segment of the subject's eye,
The imaging region switching means is disposed between the eye to be examined and the scanning means such that the exit pupil of the measurement optical system is disposed at a finite distance.
The focusing lens such that the measurement light is focused on the anterior segment when the measurement optical system is disposed at a predetermined working distance with respect to the subject's eye, and the anterior segment enters the imaging range. And said optical path length changing means are respectively disposed at predetermined positions.
前記撮像部位切替手段は、前記前眼部を撮像する際に、前記対物レンズの焦点位置に配置される、請求項1乃至3のいずれか一項に記載の光断層撮像装置。 The measurement optical system further includes an objective lens,
The optical tomographic imaging apparatus according to any one of claims 1 to 3 , wherein the imaging site switching unit is disposed at a focal position of the objective lens when imaging the anterior eye part.
前記光源から出射された光を、測定光学系を介して被検眼に照射する測定光と参照光とに分割するとともに、前記被検眼からの前記測定光の戻り光と前記参照光とを合波して得た干渉光に基づいて、前記被検眼の断層の情報を取得する情報取得部と、
前記測定光の光路と前記参照光の光路との間の光路長差を変更する光路長変更手段と、
を備え、
前記測定光学系は、
前記測定光を前記被検眼に合焦させる合焦レンズと、
前記測定光を前記被検眼上で走査する走査手段と、
を含み、
前記被検眼の前眼部を撮像する際に、
前記測定光学系の射出瞳が有限の距離に配置されるとともに、
前記被検眼に対して前記測定光学系が所定の作動距離に配置されるときに前記前眼部に前記測定光が合焦し且つ前記前眼部が撮像範囲に入るように、前記合焦レンズと前記光路長変更手段がそれぞれ所定の位置に配置される、光断層撮像装置。 Light source,
The light emitted from the light source is divided into measurement light and reference light to be irradiated to the eye through the measurement optical system, and the return light of the measurement light from the eye and the reference light are combined. An information acquisition unit for acquiring information of a tomographic image of the subject's eye based on the interference light obtained by
Optical path length changing means for changing an optical path length difference between the optical path of the measurement light and the optical path of the reference light;
Equipped with
The measurement optical system is
A focusing lens for focusing the measurement light on the eye ;
A scanning unit configured to scan the measurement light on the subject's eye;
Including
When imaging the anterior segment of the subject's eye,
An exit pupil of the measurement optical system is disposed at a finite distance, and
The focusing lens such that the measurement light is focused on the anterior segment when the measurement optical system is disposed at a predetermined working distance with respect to the subject's eye, and the anterior segment enters the imaging range. And said optical path length changing means are respectively disposed at predetermined positions.
前記光源から出射された光を、測定光学系を介して被検眼に照射する測定光と参照光とに分割するとともに、前記被検眼からの前記測定光の戻り光と前記参照光とを合波して得た干渉光に基づいて、前記被検眼の断層の情報を取得する情報取得部と、
前記測定光の光路と前記参照光の光路との間の光路長差を変更する光路長変更手段と、
を備え、
前記測定光学系は、
前記測定光を前記被検眼に合焦させる合焦レンズと、
前記測定光を前記被検眼上で走査する走査手段と、
を含み、
前記被検眼の前眼部を撮像する際に、
前記測定光学系の射出瞳が有限の距離に配置されるとともに、
前記被検眼に対して前記測定光学系が所定の作動距離に配置されるときに前記前眼部が撮像範囲に入るように、前記光路長変更手段が所定の位置に配置され、
前記情報取得部は、前記走査手段を前記所定の作動距離に対応する所定の角度範囲で駆動するように制御する、光断層撮像装置。 Light source,
The light emitted from the light source is divided into measurement light and reference light to be irradiated to the eye through the measurement optical system, and the return light of the measurement light from the eye and the reference light are combined. An information acquisition unit for acquiring information of a tomographic image of the subject's eye based on the interference light obtained by
Optical path length changing means for changing an optical path length difference between the optical path of the measurement light and the optical path of the reference light;
Equipped with
The measurement optical system is
A focusing lens for focusing the measurement light on the eye;
Scanning means for scanning the measurement light on the eye to be examined,
Including
When imaging the anterior segment of the subject's eye,
An exit pupil of the measurement optical system is disposed at a finite distance, and
The optical path length changing means is disposed at a predetermined position such that the anterior segment enters an imaging range when the measurement optical system is disposed at a predetermined working distance with respect to the eye to be examined.
The optical tomographic imaging apparatus, wherein the information acquisition unit controls the scanning unit to drive in a predetermined angle range corresponding to the predetermined working distance.
前記前眼部を撮像する際に、前記被検眼の移動に応じて、前記前眼部が前記撮像範囲内の所定の位置に配置されるように、前記光路長変更手段が配置される前記所定の位置から前記光路長変更手段を移動させ、
前記光路長変更手段の移動に基づいて、前記角度範囲を変化させる、請求項7乃至11のいずれか一項に記載の光断層撮像装置。 The information acquisition unit
The optical path length changing means is disposed such that the anterior eye part is disposed at a predetermined position within the imaging range according to the movement of the subject's eye when imaging the anterior eye part Moving the optical path length changing means from the position of
The optical tomographic imaging apparatus according to any one of claims 7 to 11, wherein the angular range is changed based on the movement of the optical path length changing means.
前記前眼部を撮像する際に、前記被検眼の移動に応じて、前記前眼部が前記撮像範囲内の所定の位置に配置されるように、前記光路長変更手段が配置される前記所定の位置から前記光路長変更手段を移動させ、
前記断層の情報から生成された断層画像を解析する際に、前記光路長変更手段の移動に基づいて、前記断層画像における2点間の距離を補正する、請求項1乃至11のいずれか一項に記載の光断層撮像装置。 The information acquisition unit
The optical path length changing means is disposed such that the anterior eye part is disposed at a predetermined position within the imaging range according to the movement of the subject's eye when imaging the anterior eye part Moving the optical path length changing means from the position of
When analyzing a tomographic image generated from the tomographic information, based on the movement of the optical path length changing means, corrects the distance between two points in the tomographic image, any one of claims 1 to 11 The optical tomographic imaging apparatus according to claim 1.
前記測定光学系から前記所定の作動距離だけ離れた位置に基準反射物体を配置し、
前記基準反射物体が前記撮像範囲の所定の位置に配置されるように、前記撮像範囲を画定する位置に設定される、請求項15に記載の光断層撮像装置。 The predetermined position where the optical path length changing means is disposed is
Placing a reference reflective object at a position separated from the measurement optical system by the predetermined working distance;
The optical tomographic imaging apparatus according to claim 15 , wherein the optical tomographic imaging apparatus is set to a position that defines the imaging range so that the reference reflective object is disposed at a predetermined position of the imaging range.
前記被検眼の眼底を撮像する際の前記測定光及び前記参照光のうちの一方の光路長と前記前眼部を撮像する際の前記測定光及び前記参照光のうちの一方の光路長との差を求め、
前記眼底を撮像する際の前記眼底に対応する位置に基準反射物体を配置し、
前記基準反射物体が前記撮像範囲の所定の位置に配置されるように前記撮像範囲を画定する位置から、求めた前記光路長の差だけオフセットさせた位置に設定される、請求項15に記載の光断層撮像装置。 The predetermined position where the optical path length changing means is disposed is
The optical path length of one of the measurement light and the reference light when imaging the fundus of the subject eye, and the optical path length of one of the measurement light and the reference light when imaging the anterior segment Find the difference,
Placing a reference reflective object at a position corresponding to the fundus when imaging the fundus;
16. The apparatus according to claim 15 , wherein the reference reflecting object is set to a position offset from the position defining the imaging range so as to be disposed at a predetermined position in the imaging range by the determined optical path length difference. Optical tomography.
前記測定光学系から前記所定の作動距離だけ離れた位置に基準反射物体を配置し、
前記断層の情報から生成された断層画像における前記基準反射物体の輝度に基づいて、前記測定光が前記基準反射物体に合焦する位置に設定される、請求項1乃至16のいずれか一項に記載の光断層撮像装置。 The predetermined position where the focusing lens is disposed is
Placing a reference reflective object at a position separated from the measurement optical system by the predetermined working distance;
The light source according to any one of claims 1 to 16 , wherein the measurement light is set at a position where the measurement light is focused on the reference reflective object, based on the luminance of the reference reflective object in the tomographic image generated from the tomographic information. The optical tomographic imaging apparatus described.
前記合焦レンズが配置される前記所定の位置は、前記複数の模擬被検眼の各々について求められた前記合焦する位置から、前記被検眼の視度に基づいて選択される、請求項18に記載の光断層撮像装置。 The reference reflecting object is a plurality of simulated subject eyes different in diopter,
The predetermined position where the focusing lens is disposed, said plurality of simulated positions the focus determined for each of the eye, the are selected based on the diopter of the eye, to claim 18 The optical tomographic imaging apparatus described.
前記断層の情報から生成される前記撮像範囲の断層画像における前記アライメント基準線の位置に前記被検眼の撮像対象の部位が配置されるように、前記被検眼に対して前記測定光学系が移動される、請求項1乃至19のいずれか一項に記載の光断層撮像装置。 Provide an alignment reference line in the imaging range,
The measurement optical system is moved with respect to the eye to be examined such that a portion to be imaged of the eye to be examined is disposed at the position of the alignment reference line in the tomographic image of the imaging range generated from the information of the tomographic The optical tomographic imaging apparatus according to any one of claims 1 to 19 .
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JP2016158675A JP6898716B2 (en) | 2016-08-12 | 2016-08-12 | Optical tomography imaging device |
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JP2019213739A (en) | 2018-06-13 | 2019-12-19 | 株式会社トプコン | Ophthalmologic apparatus, control method thereof, program, and recording medium |
JP7050588B2 (en) | 2018-06-13 | 2022-04-08 | 株式会社トプコン | Ophthalmic devices, their control methods, programs, and recording media |
CN111671389A (en) * | 2020-05-07 | 2020-09-18 | 深圳市莫廷影像技术有限公司 | Ophthalmic measurement system based on reflection switching |
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JP6080128B2 (en) * | 2014-02-28 | 2017-02-15 | 株式会社トプコン | Ophthalmic photographing apparatus and optical unit that can be attached to the same |
JP6442903B2 (en) * | 2014-07-31 | 2018-12-26 | 株式会社ニデック | Ophthalmic equipment |
JP2016123481A (en) * | 2014-12-26 | 2016-07-11 | キヤノン株式会社 | Ophthalmologic apparatus, ophthalmologic system, and ophthalmologic apparatus control method |
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