公开(公告)号：US20030086059A1

公开(公告)日：2003-05-08

申请号：US09992756

申请日：2001-11-06

Applicant: Leica Microsystems Inc.

Inventor： Christopher J. Percival ,  Douglas H. Hoover

IPC: A61B003/14

CPC classification number: A61B3/113 ,  A61B3/1208 ,  A61B3/165

Abstract: An alignment system for an ophthalmic instrument comprises an optical axis along which an operator can directly view the patient's eye and the patient can fixate on a dark fixation target surrounded by a bright background that helps to illuminate the eye for operator viewing. A position detection system utilizing stored geometrical relationships determined by multiple regression during instrument calibration computes X-Y-Z alignment status of the instrument relative to a patient's eye based on local x-y position information from a pair of lateral detectors receiving corneally reflected light from a corresponding pair of lateral light sources. A heads-up display image is provided along an optical axis of the instrument for supplying instructive cues to an operator for moving the instrument to achieve alignment based on signal information from the position detection system, whereby the operator sees both a direct macro-image of the patient's eye and the display image. The alignment system is particularly suitable for use in handheld ophthalmic instruments.

Abstract translation: 用于眼科器械的对准系统包括光轴，操作者可沿着该轴线直接观察患者的眼睛，并且患者可以固定在由明亮背景围绕的暗固定目标上，该暗视觉目标有助于照亮眼睛以供操作者观察。 利用在仪器校准中由多重回归确定的存储的几何关系的位置检测系统基于来自一对横向检测器的局部xy位置信息来计算仪器相对于患者眼睛的XYZ对准状态，所述横向检测器接收来自相应的一对侧向光的角膜反射光 来源。 沿着仪器的光轴提供平视显示图像，用于向操作者提供用于移动仪器的指示线索，以基于来自位置检测系统的信号信息来实现对准，由此操作者同时看到直接的宏观图像 患者的眼睛和显示图像。 对准系统特别适用于手持式眼科仪器。

公开(公告)号：US20030088169A1

公开(公告)日：2003-05-08

申请号：US09992875

申请日：2001-11-06

Applicant: Leica Microsystems Inc.

Inventor： Christopher J. Percival ,  Douglas H. Hoover ,  David A. Luce

IPC: A61B003/16

CPC classification number: A61B3/0058 ,  A61B3/0091 ,  A61B3/152 ,  A61B3/165 ,  A61B2560/0456

Abstract: A hand-held non-contact tonometer comprises a housing having a handle portion for enclosing a rechargeable D.C. power source and an upper head portion for enclosing alignment and tonometric measurement systems of the tonometer. An operator can directly view the patient's eye along an optical axis extending through the head portion of the housing, and an instructional display image is superimposed with the directly viewed image of the eye to guide the operator in X-Y-Z alignment based on data supplied by an afocal position detection system. A transceiver for wireless data exchange and a recharging support stand are also provided.

Abstract translation: 手持式非接触式眼压计包括具有用于封闭可再充电直流电源的手柄部分和用于封装眼压计的对准和测量计量系统的上部头部的壳体。 操作者可以沿着延伸穿过外壳头部的光轴直接观察患者的眼睛，并且将指导性显示图像与眼睛的直接观看图像叠加，以基于无焦点提供的数据引导操作者进行XYZ对准 位置检测系统 还提供了用于无线数据交换的收发器和充电支持支架。

公开(公告)号：US20030086058A1

公开(公告)日：2003-05-08

申请号：US09992497

申请日：2001-11-06

Applicant: Leica Microsystems Inc.

Inventor： Christopher J. Percival ,  Douglas H. Hoover

IPC: A61B003/14

CPC classification number: A61B3/113 ,  A61B3/1208

Abstract: A fast position detection system and related method for an ophthalmic instrument utilize stored geometrical relationships determined by multiple regression during instrument calibration to compute X-Y-Z alignment status of the instrument relative to a patient's eye based on local x-y position information from a pair of lateral detectors receiving corneally reflected light from a corresponding pair of lateral light sources. In a preferred embodiment, the lateral detectors are quad-cell detectors. A heads-up display image is preferably provided along an optical axis of the instrument for supplying instructive cues to an operator for moving the instrument to achieve alignment, whereby the operator sees both a macro-image of the patient's eye and the display image. The speed of the position detection system makes it particularly suitable for use in hand-held ophthalmic instruments.

Abstract translation: 用于眼科仪器的快速位置检测系统和相关方法利用在仪器校准期间由多个回归确定的存储的几何关系，以基于来自一对接收角膜的横向检测器的局部xy位置信息来计算器械相对于患者眼睛的XYZ对准状态 来自相应的一对横向光源的反射光。 在优选实施例中，横向检测器是四单元检测器。 优选地，沿着仪器的光轴提供平视显示图像，用于向操作者提供用于移动仪器以实现对准的指导线索，由此操作者看到患者眼睛的宏观图像和显示图像。 位置检测系统的速度使其特别适用于手持式眼科仪器。