Means and methods of measuring refraction
AssigneeEyeQue Inc.
InventorsNoam Sapiens, John Serri
Life of this patent
Estimating the term…
Abstract
In an embodiment, multiple conjugate planes are used to create a plurality of optical pupil planes and a plurality of image planes. These optical planes solve multiple problems and introduce significant performance enhancements in the system. In one implementation of a disclosed embodiment, the measurement channel is based on the reverse Shack-Hartmann principle. By introducing a relay system (for example a 4-f lens system) the slit plane could be made conjugate to the measured system pupil plane (unlike a previous implementation where the slits were places away from the pupil plane as it was not accessible directly). Creating a virtual pupil plane allows for more accurate placement of the plane without the need for contact with the measured optical system.
Claims9
A system to correct errors in an optical system, without need for corrective lenses for the optical system, the system comprising:
- a) an imaging channel;
- b) a measurement channel;
- c) a monocular device and wherein the measurement channel comprises a collecting lens, two color lenses, two slits and a slits plane optically related to the optical system and contained within the monocular device.
A method to find errors in an optical system, the method comprising the combination of using an image channel combined with a measurement channel;
- a) wherein the image channel uses a second relay lens, a beam splitter, an aspheric lens, an aperture and a screen;
- b) wherein the measurement channel continues from the beam splitter to a second optical relay lens to a slit plane to a pair of colored lens, a demaginfier and a screen.
Dependencies are inferred from the claim text.