Patent ID: 8040608
Filing Date: 2011-10-18
Classification: G01N,G02B

Abstract:
1. An apparatus which is configured to obtain at least one electro-magnetic radiation from at least one portion of a sample, comprising: at least one first arrangement which is configured to separate the at least one electro-magnetic radiation into a plurality of first radiations to have cross-sections that are different from one another, the at least one first arrangement being configured to impart a phase delay over the cross-section of one of the first radiations that is different from a phase delay over the cross-section of another one of the first radiations; at least one second arrangement which is configured to receive at least one of the first radiations, and separate the received at least one of the first radiations into second radiations according to wavelengths of the received at least one of the first radiations; at least one third arrangement which is configured to spatially filter at least one of the first radiations or the second radiations; and at least one fourth arrangement which is configured to detect the second radiations and generate information regarding a position of the at least one portion of the sample as a function of at least one characteristic of the self-interference of the first radiations.