CN104545786A - 条纹视力测试仪 - Google Patents

条纹视力测试仪 Download PDF

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CN104545786A
CN104545786A CN201510017364.5A CN201510017364A CN104545786A CN 104545786 A CN104545786 A CN 104545786A CN 201510017364 A CN201510017364 A CN 201510017364A CN 104545786 A CN104545786 A CN 104545786A
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CN104545786B (zh
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刘平
高惠德
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Gao Huide
Harbin Medical University Asset Management Co ltd
Liu Ping
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HEILONGJIANG MEDICAL SCIENCE INSTITUTE
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Abstract

条纹视力测试仪，涉及视力检查技术领域。包括光源、准直透镜和汇聚透镜，其特征在于：还包括光学尖劈和半反半透镜片，所述的光源、准直透镜和半反半透镜片的中心在一条直线上，所述的汇聚透镜、半反半透镜片和光学尖劈的中心在另一条直线上，两条直线垂直，垂足位于半反半透镜片的中心，半反半透镜片与两条直线的夹角均为45°。本发明采用劈尖干涉原理，通过让患者分辨劈尖干涉后的光条纹的显示状况，来判断患者的视力状况，帮助医生对患者病情作出诊断。由于采用了劈尖干涉原理，本发明可以有效保证测试精度，除此之外，本发明还具有结构简单的特点，不但使用起来非常方便，而且制造和维护成本也大大降低。

Description

条纹视力测试仪
技术领域
本发明属于一种视力检查装置，具体说是一种条纹视力测试仪。
背景技术
视力测试仪是眼科检查中常用的测试仪器。现有的视力测试仪器虽然功能比较全面，但单项测试的精度比较低，而且操作起来比较比较繁琐，对使用者的技术水平提出了较高要求；另外，这些产品价格比较昂贵，维修和维护费用也相对较高，给购买单位，尤其是小型医疗单位造成了比较大的经济负担。
发明内容
为了解决上述问题，本发明旨在提供一种测试精度高、结构简单、操作方便、制造成本低的条纹视力测试仪。
为了达到上述目的，本发明采用如下技术方案：
条纹视力测试仪，包括光源、准直透镜和汇聚透镜，其特征在于：还包括光学尖劈和半反半透镜片，所述的光源、准直透镜和半反半透镜片的中心在一条直线上，所述的汇聚透镜、半反半透镜片和光学尖劈的中心在另一条直线上，两条直线垂直，垂足位于半反半透镜片的中心，半反半透镜片与两条直线的夹角均为45°。
所述的光源为半导体激光器。
所述的光学尖劈由两块互成角度的光学玻璃制成。
本发明的有益效果：采用劈尖干涉原理，通过让患者分辨劈尖干涉后的光条纹的显示状况，来判断患者的视力状况，帮助医生对患者病情作出诊断。通过调节光学尖劈上两块光学玻璃的夹角，可以精确调节干涉条纹的间距，从而对患者视力状况进行精确测试。由于采用了光学中的劈尖干涉原理，可以有效保证测试精度，除此之外，还具有结构简单的特点，由于没有多余的附属结构，不但使用起来非常方便，而且制造和维护成本也大大降低。
附图说明
图1为本发明的整体结构示意图。
具体实施方式
下面结合附图，对本发明做进一步说明：
本发明包括光源6、准直透镜5和汇聚透镜2，其特征在于：还包括光学尖劈4和半反半透镜片3，所述的光源6、准直透镜5和半反半透镜片3的中心在一条直线上，所述的汇聚透镜2、半反半透镜片3和光学尖劈4的中心在另一条直线上，两条直线垂直，垂足位于半反半透镜片3的中心，半反半透镜片3与两条直线的夹角均为45°。所述的光源6为半导体激光器。所述的光学尖劈4由两块互成角度的光学玻璃制成。
本发明的工作过程为：由光源6发出的光经准直透镜5后形成平行光束，平行光束入射到半反半透镜片3后，反射到光学尖劈4上，反射到光学尖劈4上的光束又经过两块光学玻璃之间形成的空气薄膜的上下表面反射后形成干涉条纹，形成此干涉条纹的光束经半反半透镜片3和会聚透镜2后射入人眼1中，医生将根据患者观察到条纹的状态给出人眼1的视力情况。
本发明采用劈尖干涉原理，通过让患者分辨劈尖干涉后的光条纹的显示状况，来判断患者的视力状况，帮助医生对患者病情作出诊断。通过调节光学尖劈4上两块光学玻璃的夹角，可以精确调节干涉条纹的间距，从而对患者视力状况进行精确测试。由于采用了劈尖干涉原理，本发明可以有效保证测试精度，除此之外，还具有结构简单的特点，由于没有多余的附属结构，不但使用起来非常方便，而且制造和维护成本也大大降低。

Claims (3)

1.一种条纹视力测试仪，包括光源、准直透镜和汇聚透镜，其特征在于：还包括光学尖劈和半反半透镜片，所述的光源、准直透镜和半反半透镜片的中心在一条直线上，所述的汇聚透镜、半反半透镜片和光学尖劈的中心在另一条直线上，两条直线垂直，垂足位于半反半透镜片的中心，半反半透镜片与两条直线的夹角均为45°。
2.根据权利要求1所述的条纹视力测试仪，其特征在于：所述的光源为半导体激光器。
3. 根据权利要求1所述的条纹视力测试仪，其特征在于：所述的光学尖劈由两块互成角度的光学玻璃制成。
CN201510017364.5A 2015-01-14 2015-01-14 条纹视力测试仪 Expired - Fee Related CN104545786B (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096325A2 (de) * 1982-06-08 1983-12-21 Interzeag AG Verfahren und Vorrichtung zum Bestimmen der Kontrastempfindlichkeit des menschlichen Auges
CN85205313U (zh) * 1985-11-30 1987-03-11 陕西师范大学 视觉锐度测定仪
WO2006081998A1 (de) * 2005-02-04 2006-08-10 Carl Zeiss Meditec Ag Vorrichtung zur positionsbestimmung voneinander distanzierter bereiche in transparenten und/oder diffusen objekten
CN2850515Y (zh) * 2005-10-21 2006-12-27 金成鹏 光栅法视觉对比敏感度检查仪
CN101614612A (zh) * 2009-07-24 2009-12-30 深圳职业技术学院 视网膜调制传递函数测量装置
CN101650169A (zh) * 2009-07-17 2010-02-17 山东富美科技有限公司 一种刮刀平整度检测***
CN204379243U (zh) * 2015-01-14 2015-06-10 黑龙江省医学科学院 条纹视力测试仪

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096325A2 (de) * 1982-06-08 1983-12-21 Interzeag AG Verfahren und Vorrichtung zum Bestimmen der Kontrastempfindlichkeit des menschlichen Auges
CN85205313U (zh) * 1985-11-30 1987-03-11 陕西师范大学 视觉锐度测定仪
WO2006081998A1 (de) * 2005-02-04 2006-08-10 Carl Zeiss Meditec Ag Vorrichtung zur positionsbestimmung voneinander distanzierter bereiche in transparenten und/oder diffusen objekten
CN2850515Y (zh) * 2005-10-21 2006-12-27 金成鹏 光栅法视觉对比敏感度检查仪
CN101650169A (zh) * 2009-07-17 2010-02-17 山东富美科技有限公司 一种刮刀平整度检测***
CN101614612A (zh) * 2009-07-24 2009-12-30 深圳职业技术学院 视网膜调制传递函数测量装置
CN204379243U (zh) * 2015-01-14 2015-06-10 黑龙江省医学科学院 条纹视力测试仪

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