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| 人眼消色差：色视差问题 |
| Achromatizing the Human Eye:the Problem of Chromatic Parallax |
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| DOI： |
| 中文关键词: 色视差,不共轴,消色差透镜 |
| 英文关键词:Chromatic Parallax,Misalignment, Achromatizing Lenses |
| 基金项目: |
| 张晓啸 等 |
| 印地安那大学视光学学院!布鲁明顿，47405 |
| 摘要点击次数: 3770 |
| 全文下载次数: 16 |
| 中文摘要: |
| 如果眼睛不与消色差系统的光轴共轴，那么校正人眼聚焦色差将导致我们所不期望的色视差。用几何光学方法可以证明视差量大约与眼睛的不共轴量成正比，其比例常数与眼睛的色差相同。饮用两种市场上可得到的消色差透镜，通过色差试验证实了此推测。基于这些结果，可以计算出，该消色差透镜给眼睛的复色调制传递函数提供的改进量，将由于透镜和眼睛之间的大约0．4mm的不共轴性抵消。对比灵敏度的心理物理实验已证实了我什1的推测：不关轴量的进一步增大特严重降低已消色差眼睛的成像质量。 |
| 英文摘要: |
| Attempts to correct the chromatic difference of focus of the human eye will in-troduce unwanted chromatic parallax if the eye is misalligned with the optical axis of theachromatizing system. Using geometrical optics,we show that the amount of parallax is ap-proximately proportiona1 to the amount of the misallignment of the eye,with the constant ofproportionality equal to the eye's chromaticdifference of refractive error. This prediction wasconfirmed by the experimental detemination of chromatic parallax for two commerciallyavailable achromatizing lenses' On the basis of these result,we calculated that anticipated im-provements in the polychromatic modulation transfer function of the eye offered by achroma-tizing lenses wiIl be canceled by ~o. 4mm of the misalignment between the lens and the eye'Our prediction that further misalignment wou1d severely reduce image quality of the achrom-atized eye was verified by psychophysical measurements of contrasts sensitivity. |
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