Patent ID: 7633622
Filing Date: 2009-12-15
Classification: G02B

Abstract:
1. A method for microscopically testing a sample, comprising: illuminating the sample with a first evanescent field to a first penetration depth of the sample; detecting a first detection light exiting from a part of the sample illuminated with the first evanescent field to produce first detection light data comprising imaging of objects within the first penetration depth of the sample; illuminating the sample with a second evanescent field to a second penetration depth of the sample that is greater than the first penetration depth; detecting a second detection light exiting from a part of the sample illuminated with the second evanescent field to produce second detection light data comprising imaging of objects within the second penetration depth of the sample; and correlating the first and the second detection light data and subtracting the first detection light data from the second detection light data to produce displayable three-dimensional imaging of objects within the sample.