公开(公告)号：US3740150A

公开(公告)日：1973-06-19

申请号：US3740150D

申请日：1971-01-06

Applicant: TROPEL

Inventor： MUNNERLYN C

IPC: G01B9/02 ,  G01B11/255

CPC classification number: G01B11/255 ,  G01B9/02063

Abstract: An interferometer measures a test surface arranged in the test arm of the interferometer by using a focusing lens system movable along the test arm. The focusing lens system is adjustable along a slide that is movable along the test arm of the instrument, and the test surface is mounted at a region of maximum coherence function of the test beam. The focusing lens system is adjusted along the slide to focus the test beam on the surface of the test surface. Then by means of gauge blocks removably interposable between the slide and a reference surface and equalling the desired radius of curvature of the test surface, the slide is moved to bring the focus of the test beam to the region of the center of curvature of the test surface to observe interference fringes between light returning from the test surface and a plane wave front reference beam.

Abstract translation: 干涉仪通过使用沿着测试臂移动的聚焦透镜系统来测量布置在干涉仪的测试臂中的测试表面。 聚焦透镜系统沿着可沿着仪器的测试臂移动的滑块可调，并且测试表面安装在测试梁的最大相干函数的区域。 沿着滑块调整聚焦透镜系统，将测试光束聚焦在测试表面上。 然后，借助于可滑动地插入滑块和参考表面之间并且等于测试表面的期望曲率半径的量块，移动滑块以使测试光束的焦点到测试曲率中心的区域 以观察从测试表面返回的光与平面波前参考光束之间的干涉条纹。

公开(公告)号：US3836238A

公开(公告)日：1974-09-17

申请号：US35882473

申请日：1973-05-09

Applicant: TROPEL

Inventor： MUNNERLYN C ,  TROW W

IPC: A61B3/10 ,  A61B3/02 ,  A61B3/13

CPC classification number: A61B3/02

Abstract: To induce the eyes to deaccommodate during examination by an instrument having an optical system aligned with one eye, a target viewable through an eyepiece is presented to and aligned with the other eye. The target is adjusted until clearly visible and then moved straight away from the other eye to appear to recede to induce both eyes to deaccommodate. A pair of eyepieces are arranged on each side of the optical system to register with the eye not being examined, and a horizontally movable slide carrying a slidable target is operated by knobs for aligning the slide with the eye and moving the target along the slide. Alternatively, a binocular system can be used with a slightly blurred target presented to the eye not being examined, and a visibly lighted, sharp image target presented to the eye being examined and arranged to be blurred to induce de-accommodation of the examined eye.

Abstract translation: 为了诱导眼睛在通过具有与一只眼睛对准的光学系统的仪器的检查期间解除适应，可以通过目镜可视的目标呈现并与另一只眼睛对准。 目标被调整直到清晰可见，然后直接从另一只眼睛移开，似乎后退，以诱使双眼脱臼。 一对目镜布置在光学系统的每一侧上以与未被检查的眼睛对准，并且通过用于使滑块与眼睛对准并沿着幻灯片移动目标物的手柄来操作带有滑动目标的水平移动的滑块。 或者，可以使用双目系统，其中呈现给未被检查的眼睛的略微模糊的目标，并且呈现给眼睛的明显点亮的清晰图像目标被检查和布置以被模糊以引起被检查的眼睛的解除适应。

公开(公告)号：US3802768A

公开(公告)日：1974-04-09

申请号：US35364973

申请日：1973-04-23

Applicant: TROPEL

Inventor： CLAPHAM T ,  HORWITZ J ,  ROBINSON B ,  MUNNERLYN C

IPC: A61B3/10 ,  A61B3/103 ,  A61B5/11 ,  G01J5/28

CPC classification number: A61B3/103 ,  A61B3/10 ,  A61B5/1103 ,  A61B5/7239

Abstract: The inventive method compensates for blinks occurring during examination of the eye by an objective refractor. An analog signal is produced as a function of the focus of a light pattern reflected from the eye, and the signal is processed and fed to an analyzer for determining the refractive error of the eye. The input to the analyzer is delayed to follow the analog signal by a predetermined delay. Meanwhile, any rate of change of the analog signal exceeding a predetermined thresh-hold is detected to represent the beginning of a blink, and a blink commencement signal is produced and used to stop the examination of the eye for a predetermined blink interval exceeding the expected duration of the blink. Also, the analyzer ignores the portion of the analyzer input devoted to the blink interval.

Abstract translation: 本发明的方法补偿由目标折射仪检查眼睛期间发生的眨眼。 产生作为从眼睛反射的光图案的焦点的函数的模拟信号，并且处理信号并将其馈送到用于确定眼睛的屈光不正的分析器。 延迟到分析仪的输入以遵循模拟信号预定的延迟。 同时，检测到超过预定阈值保持的模拟信号的任何变化率以表示眨眼的开始，并且产生眨眼开始信号，并用于停止超过预期的预定眨眼间隔的眼睛检查 眨眼持续时间 此外，分析仪也会忽略分析仪输入部分，用于闪烁间隔。