JP6586599B2 - 眼屈折力測定装置 - Google Patents
眼屈折力測定装置 Download PDFInfo
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- JP6586599B2 JP6586599B2 JP2015087049A JP2015087049A JP6586599B2 JP 6586599 B2 JP6586599 B2 JP 6586599B2 JP 2015087049 A JP2015087049 A JP 2015087049A JP 2015087049 A JP2015087049 A JP 2015087049A JP 6586599 B2 JP6586599 B2 JP 6586599B2
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- 230000003287 optical effect Effects 0.000 claims description 64
- 238000005259 measurement Methods 0.000 claims description 45
- 210000001747 pupil Anatomy 0.000 claims description 21
- 238000003384 imaging method Methods 0.000 claims description 10
- 230000001427 coherent effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 7
- 230000000007 visual effect Effects 0.000 description 6
- 208000002177 Cataract Diseases 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 230000004075 alteration Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010027646 Miosis Diseases 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Eye Examination Apparatus (AREA)
Description
Claims (3)
- 被検眼の瞳孔上において前記被検眼の瞳孔中心から所定距離離れた位置から入射し、眼底にスポット状の測定光束を投光する投光光学系と、
該被検眼の瞳孔と共役位置に配置されたリング状又は複数の点状の開口を持つ遮光部により該眼底からの反射光を取り出し二次元撮像素子に受光させる受光光学系と、
前記二次元撮像素子の出力に基づいて該被検眼の眼屈折力を得る演算手段と、を有しており、
該被検眼の瞳孔中心から所定距離離れた位置に前記測定光束を偏向させるための偏向部材を有し、
前記偏向部材は、前記投光光学系と前記受光光学系の共用光路の該被検眼の瞳孔と共役位置に配置され、前記偏向部材を前記投光光学系及び前記受光光学系の光軸中心に回転させる回転手段を有することを特徴とする眼屈折力測定装置。 - 前記偏向部材は、平行平面板であることを特徴とする請求項1に記載の眼屈折力測定装置。
- 前記投光光学系に用いられる光源は、可干渉性のレーザーダイオード又はスーパールミネッセントダイオードであることを特徴とする請求項1又は2に記載の眼屈折力測定装置。
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JP2015087049A JP6586599B2 (ja) | 2015-04-21 | 2015-04-21 | 眼屈折力測定装置 |
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JP2015087049A JP6586599B2 (ja) | 2015-04-21 | 2015-04-21 | 眼屈折力測定装置 |
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JP2016202506A JP2016202506A (ja) | 2016-12-08 |
JP6586599B2 true JP6586599B2 (ja) | 2019-10-09 |
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JP2015087049A Active JP6586599B2 (ja) | 2015-04-21 | 2015-04-21 | 眼屈折力測定装置 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6713902B2 (ja) | 2016-10-14 | 2020-06-24 | 中央発條株式会社 | 車両用保持装置 |
CN113625445B (zh) * | 2021-08-16 | 2023-07-04 | 重庆远视科技有限公司 | 用于测量屈光信息的光学系统 |
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JP2001340299A (ja) * | 2000-06-02 | 2001-12-11 | Topcon Corp | 眼光学特性測定装置 |
JP4492847B2 (ja) * | 2003-12-25 | 2010-06-30 | 株式会社ニデック | 眼屈折力測定装置 |
JP6095439B2 (ja) * | 2013-03-28 | 2017-03-15 | キヤノン株式会社 | 眼科装置、その制御方法、及びプログラム |
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