Systems and methods for improved focus tracking using a light source configuration

    公开(公告)号:US10416428B2

    公开(公告)日:2019-09-17

    申请号:US15913903

    申请日:2018-03-06

    Applicant: ILLUMINA, INC.

    Abstract: An imaging system including a light source; a first focusing lens positioned to focus a beam from the light source to a beam waist at a predetermined location along an optical path of the beam in the imaging system; a beam splitter positioned relative to the first focusing lens to receive the beam from the first focusing lens and to create first and second beams; a second focusing lens positioned to receive the first and second beams output by the beam splitter, to focus the received first and second beams to a spot sized dimensioned to fall within a sample to be image, and further positioned to receive first and second beams reflected from the sample; an image sensor positioned to receive the light beams reflected from the sample; and a roof prism positioned in the optical path between the second focusing lens and the image sensor.

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