System and method for utilizing an autofocus feature in an...

Details System and method for utilizing an autofocus feature in an... System and method for utilizing an autofocus feature in an...

2007-11-20

2007-11-20

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S201400, C348S345000

Reexamination Certificate

active

11320676

ABSTRACT:
The invention relates to a method for adjusting focus in an automated microscope. The method may comprise the steps of: providing an optical detector for image acquisition, wherein the optical detector comprises an array of sensor pixels; designating a region of interest in the array of sensor pixels to emulate a confocal aperture; directing a light beam to illuminate an object according to a predefined pattern, thereby forming an image of the illuminated pattern at the optical detector, wherein the image of the illuminated pattern substantially overlaps the designated region of interest; detecting a light intensity from sensor pixels located within the designated region of interest; and adjusting a relative focal position of an objective lens based on the detected light intensity.

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patent: 2002/0050518 (2002-05-01), Roustaei
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