Patent ID: 11963722
Assignee: AMO DEVELOPMENT, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An instrument, comprising:
a light source configured to produce light having a linear shape;
a beamsplitter configured to receive the light from the light source and to direct the light in a first direction;
a first lens located one focal length from the light source and configured to receive the light from the beamsplitter and direct the light to an eye to produce a virtual image of the linear shape in the eye, and further configured to receive returned light from the eye and provide the returned light to the beamsplitter, wherein the beamsplitter is further configured to direct the returned light in a second direction; and
a split-prism rangefinder including an image sensor, wherein the split-prism rangefinder is configured to receive the returned light from the beamsplitter and to determine a distance the eye moved relative to the first lens between a first time and a second time which is subsequent to the first time, based on a change in the linear shape of the returned light which is imaged onto the image sensor.