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1. 发明授权

US4540253A Method and device for measuring eye refraction errors 失效
$Method and device for measuring eye refraction errors$
标题翻译：用于测量眼睛折射误差的方法和装置
公开(公告)号：US4540253A
公开(公告)日：1985-09-10
申请号：US635472
申请日：1984-07-30
申请人： Shuji Hoshika , Hideyuki Ishiai , Yukiyasu Nishikawa , Masato Hara , Hirochika Aiura , Ikuzo Okamoto , Osamu Shindow
发明人： Shuji Hoshika , Hideyuki Ishiai , Yukiyasu Nishikawa , Masato Hara , Hirochika Aiura , Ikuzo Okamoto , Osamu Shindow
IPC分类号： A61B3/103 , A61B3/14
CPC分类号： A61B3/103
摘要： A method and apparatus for measuring eye refraction errors in which a plurality of infrared patterns are projected onto an eye to be measured. The reflected light is directed onto corresponding light sensitive detectors the outputs of which are coupled through bandpass filters, an automatic gain control circuit and an A/D converter to a microprocessor. The microprocessor analyses the digitized outputs calculating refraction powers in accordance with a disclosed nonlinear regression technique. The refraction errors of the eye, along with a reliability coefficient, are calculated in accordance with the thusly determined refraction powers.
摘要翻译：一种用于测量眼睛折射误差的方法和装置，其中将多个红外图案投影到要测量的眼睛上。反射光被引导到对应的光敏检测器，其输出通过带通滤波器耦合，自动增益控制电路和A / D转换器耦合到微处理器。微处理器根据公开的非线性回归技术分析计算折射能力的数字化输出。根据所确定的折射能量计算眼睛的折射误差以及可靠性系数。

2. 发明授权

US4637720A Lens meter having a focusing indication system with divided-image registration focusing 失效
标题翻译：具有聚焦指示系统的镜头计时器具有分割图像配准对焦
公开(公告)号：US4637720A
公开(公告)日：1987-01-20
申请号：US550689
申请日：1983-11-10
申请人： Moriyasu Shirayanagi , Osamu Shindo , Hirochika Aiura , Tadao Hara
发明人： Moriyasu Shirayanagi , Osamu Shindo , Hirochika Aiura , Tadao Hara
IPC分类号： G01M11/02 , G01B9/00
CPC分类号： G01M11/0228
摘要： A lens meter having a focusing indication system with divided-image registration focusing comprises a condenser lens, a target having a nondiffusing transmissive surface and a slit pattern thereon, an objective lens, a lens mount for supporting a lens to be examined, a projection lens, a screen, the arrangement being such that the distance of movement in unison of the condenser lens and the target in the direction of an optical axis is read to detect the degree of the lens supported on the lens mount, an aperture plate disposed in the vicinity of a front focal point of the condenser lens and movable with the condenser lens and the target in the direction of the optical axis, and at least two deflection prisms disposed in intimate contact with the slit pattern on the target and having bases extending across the slit pattern and substantially perpendicularly to each other.
摘要翻译：具有分割图像配准聚焦的聚焦指示系统的透镜计量器包括聚光透镜，具有非扩散透射表面的目标和其上的狭缝图案，物镜，用于支撑被检查透镜的透镜支架，投影透镜屏幕，该布置使得能够读取聚光透镜和目标物在光轴方向上的一致运动距离，以检测支撑在透镜座上的透镜的程度，聚光透镜的前焦点附近，并且可以在聚光透镜和靶在光轴方向上移动，以及至少两个偏转棱镜，其设置成与靶上的狭缝图案紧密接触，狭缝图案并且基本上垂直于彼此。

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