JP2019080804A5 - - Google Patents
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- JP2019080804A5 JP2019080804A5 JP2017210669A JP2017210669A JP2019080804A5 JP 2019080804 A5 JP2019080804 A5 JP 2019080804A5 JP 2017210669 A JP2017210669 A JP 2017210669A JP 2017210669 A JP2017210669 A JP 2017210669A JP 2019080804 A5 JP2019080804 A5 JP 2019080804A5
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- oct
- interference signal
- optical path
- fundus
- light
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- 230000003287 optical Effects 0.000 claims 16
- 238000005259 measurement Methods 0.000 claims 13
- 238000001228 spectrum Methods 0.000 claims 11
- 230000002093 peripheral Effects 0.000 claims 5
- 238000003384 imaging method Methods 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 2
- 230000003595 spectral Effects 0.000 claims 1
Claims (5)
前記ＯＣＴ光学系は、
前記測定光が眼底上を横断する一つの横断方向に関して眼底中心部と眼底周辺部を含む広角領域に測定光を導くＯＣＴ光学系であって、
前記眼底中心部を含む第１ＯＣＴデータを得るために設定された光路長を有する第１参照光路と、前記眼底周辺部を含む第２ＯＣＴデータを得るために設定された光路長を有し、前記第１参照光路とは異なる第２参照光路と、
前記測定光と前記第１参照光路による第１参照光と、の第１干渉信号を検出する第１検出器と、前記測定光と前記第２参照光路による第２参照光と、の第２干渉信号を検出する第２検出器と、
前記第１干渉信号の検出によって前記第１検出器から出力される第１スペクトル干渉信号と、前記第２干渉信号の検出によって前記第２検出器から出力される第２スペクトル干渉信号と、に基づいて、前記第１ＯＣＴデータ及び前記第２ＯＣＴデータを取得するための撮影条件を調整する調整手段と、
を備え、
前記画像処理器は、
前記調整手段によって撮影条件が調整された後、前記眼底中心部に導かれた前記測定光と前記第１参照光との前記第１干渉信号に基づいて前記眼底中心部を含む前記第１ＯＣＴデータを得ると共に、前記眼底周辺部に導かれた前記測定光と前記第２参照光との前記第２干渉信号に基づいて前記眼底周辺部を含む前記第２ＯＣＴデータを得ることを特徴とするＯＣＴ装置。 OCT optics that divides the light from the OCT light source into a measurement optical path and a reference optical path, and detects an interference signal between the measurement light guided to the fundus of the eye to be inspected through the measurement optical path and the reference light from the reference optical path by a detector. An OCT apparatus including a system and an image processor capable of processing an spectral interference signal output from the detector and acquiring OCT data.
The OCT optical system is
An OCT optical system that guides the measurement light to a wide-angle region including the central part of the fundus and the peripheral part of the fundus in one transverse direction in which the measurement light traverses the fundus.
The first reference optical path having an optical path length set to obtain the first OCT data including the central part of the fundus and the optical path length set to obtain the second OCT data including the peripheral part of the fundus. A second reference optical path that is different from the first reference optical path,
The second interference between the first detector that detects the first interference signal of the measurement light and the first reference light by the first reference optical path, and the second reference light by the measurement light and the second reference optical path. The second detector that detects the signal and
Based on the first spectrum interference signal output from the first detector by the detection of the first interference signal and the second spectrum interference signal output from the second detector by the detection of the second interference signal. Then, the adjusting means for adjusting the imaging conditions for acquiring the first OCT data and the second OCT data, and
With
The image processor
After the imaging conditions are adjusted by the adjusting means, the first OCT data including the fundus center is obtained based on the first interference signal between the measurement light guided to the fundus center and the first reference light. An OCT apparatus characterized in that the second OCT data including the peripheral portion of the fundus is obtained based on the second interference signal between the measurement light guided to the peripheral portion of the fundus and the second reference light.
前記第１スペクトル干渉信号及び前記第２スペクトル干渉信号には、前記被検眼の所定の領域のスペクトル干渉信号が含まれ、
前記調整手段は、前記被検眼の前記所定の領域における前記第１スペクトル干渉信号と、前記第２スペクトル干渉信号と、に基づいて、前記第１ＯＣＴデータ及び前記第２ＯＣＴデータを取得するための撮影条件を調整することを特徴とするＯＣＴ装置。 In the OCT apparatus according to claim 1,
The first spectrum interference signal and the second spectrum interference signal include a spectrum interference signal in a predetermined region of the eye to be inspected.
The adjusting means is a photographing condition for acquiring the first OCT data and the second OCT data based on the first spectrum interference signal and the second spectrum interference signal in the predetermined region of the eye to be inspected. An OCT device characterized by adjusting.
前記調整手段は、前記第１スペクトル干渉信号と、前記第２スペクトル干渉信号と、の信号強度に基づいて、記第１ＯＣＴデータ及び前記第２ＯＣＴデータを取得するための撮影条件を調整することを特徴とするＯＣＴ装置。 In the OCT apparatus according to claim 1 or 2,
The adjusting means is characterized in that the imaging conditions for acquiring the described first OCT data and the second OCT data are adjusted based on the signal intensities of the first spectrum interference signal and the second spectrum interference signal. OCT device.
前記調整手段は、前記第１スペクトル干渉信号と、前記第２スペクトル干渉信号と、のコントラスト情報に基づいて、前記第１ＯＣＴデータ及び前記第２ＯＣＴデータを取得するための撮影条件を調整することを特徴とするＯＣＴ装置。 In the OCT apparatus according to claim 1 or 2,
The adjusting means is characterized in that the imaging conditions for acquiring the first OCT data and the second OCT data are adjusted based on the contrast information of the first spectrum interference signal and the second spectrum interference signal. OCT device.
前記調整手段は、前記測定光と前記第１参照光との光路長差及び前記測定光と前記第２参照光との光路長差を調整する光路長調整手段と、前記眼底中心部及び前記眼底周辺部に対する合焦位置を調整するフォーカス調整手段と、前記測定光と前記第１参照光との偏光状態及び前記測定光と前記第２参照光との偏光状態を調整する偏光調整手段と、の少なくともいずれかであることを特徴とするＯＣＴ装置。 In the OCT apparatus according to any one of claims 1 to 4,
The adjusting means includes an optical path length adjusting means for adjusting the optical path length difference between the measurement light and the first reference light and the optical path length difference between the measurement light and the second reference light, and the central portion of the fundus and the fundus. A focus adjusting means for adjusting the focusing position with respect to the peripheral portion, and a polarization adjusting means for adjusting the polarization state of the measurement light and the first reference light and the polarization state of the measurement light and the second reference light. An OCT apparatus characterized in that it is at least one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017210669A JP7043790B2 (en) | 2017-10-31 | 2017-10-31 | OCT device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017210669A JP7043790B2 (en) | 2017-10-31 | 2017-10-31 | OCT device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019080804A JP2019080804A (en) | 2019-05-30 |
| JP2019080804A5 true JP2019080804A5 (en) | 2020-11-26 |
| JP7043790B2 JP7043790B2 (en) | 2022-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017210669A Active JP7043790B2 (en) | 2017-10-31 | 2017-10-31 | OCT device |
Country Status (1)
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| JP (1) | JP7043790B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021192117A1 (en) * | 2020-03-25 | 2021-09-30 | 日本電気株式会社 | Optical interference tomographic imaging device |
| JPWO2021246291A1 (en) * | 2020-06-03 | 2021-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7751862B2 (en) * | 2004-08-19 | 2010-07-06 | Fp Technology | Frequency resolved imaging system |
| JP2011214969A (en) * | 2010-03-31 | 2011-10-27 | Canon Inc | Imaging apparatus and imaging method |
| US9180039B2 (en) * | 2010-08-16 | 2015-11-10 | Yale University | Intrauterine device |
| JP2012042348A (en) * | 2010-08-19 | 2012-03-01 | Canon Inc | Tomographic image display device and control method therefor |
| JP2014073207A (en) * | 2012-10-03 | 2014-04-24 | Topcon Corp | Ophthalmologic imaging device |
| JP6322042B2 (en) * | 2014-04-28 | 2018-05-09 | キヤノン株式会社 | Ophthalmic photographing apparatus, control method thereof, and program |
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