Optical alignment apparatus and method therefor
AssigneeLein Applied Diagnostics Limited
InventorsAusten Hearn, Simon Meadowcroft, Richard Holley
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Abstract
An optical measurement apparatus comprises an optical system. The optical system comprises a source and an image capture device. The source is arranged to generate, when in use, a beam of electromagnetic radiation. Further, the optical system is arranged to direct the beam of electromagnetic radiation to a location to be measured. The optical measurement apparatus also comprises a feedback arrangement arranged to receive a reflected beam from the location to be measured and to provide feedback information in response to receipt of the reflected beam, the feedback information being indicative of degree of alignment of the location to be measured with the optical system.
Claims17
A confocal measurement apparatus comprising:
- an optical system comprising:
- a source arranged to emit, when in use, a probe beam, the optical system being arranged to direct, when in use, the probe beam to a location to be measured;
- an apertureless detector arrangement capable of receiving a reflected beam from the location to be measured, the apertureless detector arrangement comprising a plurality of detector elements;
- and
- a processing resource operably coupled to the apertureless detector arrangement;
- wherein
- the processing resource is arranged to identify, when in use, a number of the plurality of detector elements illuminated by the reflected beam and select a detector element from the number of the plurality of detector elements based upon a predetermined criterion for performing a calculation in relation to an output signal generated by the selected detector element.
An optical measurement apparatus comprising:
- an optical system comprising:
- a source arranged to generate, when in use, a beam of electromagnetic radiation, the optical system being arranged to direct, when in use, the beam of electromagnetic radiation to a location to be measured;
- and
- a feedback arrangement arranged to receive, when in use, a reflected beam from the location to be measured and to provide feedback information in response to receipt of the reflected beam, the feedback information being indicative of degree of alignment of the location to be measured with the optical system;
- wherein
- the location to be measured is a location of a feature of an eye;
- the optical system is arranged to receive the reflected beam from the eye;
- and
- the optical system is further arranged to direct at least part of the reflected beam back to the eye, the redirected reflected beam constituting the feedback information.
Dependencies are inferred from the claim text.