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| 用全息位相光栅测量IVA视力的光学设计 |
| Optical design of measuring the IVA of eye with holographic phase grating |
| 修订日期:2002-07-02 |
| DOI: |
| 中文关键词: 激光干涉条纹视力,视网膜视力,全息位相光栅,光学设计 |
| 英文关键词:interference visuity acuity(IVA),retinal visual acuity,holographic phase grating,optical design, |
| 基金项目: |
| 沈美萍 刘啸虎 |
温州医学院眼视光学院 浙江温州325027
(沈美萍) ,苏州六六视觉科技股份有限公司 江苏苏州215005(刘啸虎)
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| 中文摘要: |
| 阐述了人眼视网膜激光干涉条纹视力 IVA(视网膜视力 )测量的原理 ,设计了一套测量视网膜视力的光学系统。该系统采用 He- Ne激光作为光源 ,通过一全息位相光栅产生所需要的两相干点光源 ,从而获得对应视网膜视力的相干条纹。实验结果表明 ,采用本方法获得的用于测量视网膜视力的相干条纹稳定、可靠 ,测试装置整体结构紧凑 ,能较为准确地测量人眼的视网膜视力。 |
| 英文摘要: |
| The principle of the IVA or Retinal Visual Acuity measurement of eye is described.An optical system is designed for the IVA measurement.In this system,He-Ne laser is selected as the source,through the holographic phase grating,the interference pattern is produced.Thus,the IVA value is measured.This method is reliable and practical.The structure of the testing is compact.It can exactly measure the IVA value of the eye. |
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