Focusing of microscopes and reading of microarrays

Details Focusing of microscopes and reading of microarrays Focusing of microscopes and reading of microarrays

2006-08-22

2006-08-22

Hannaher, Constantine (Department: 2884)

Radiant energy

Luminophor irradiation

Reexamination Certificate

active

07095032

ABSTRACT:
Microscopes, including viewing and other microscopic systems, employ a hinged, tiltable plate to adjust focus on a flat object such as a microscope slide or biochip by motion, achieved by tilting, which is substantially normal to the focus point on the plane of the object. By employing two such tiltable arrangements, relatively long scan lines of e.g., flying objective, single pixel on-axis scanning can be accommodated. The tilting support plate is specifically constructed to provide tailored locations for different objects in series along the Y axis of the plate. The plate can accommodate beaters and cooled plates and/or the flat object being examined. In a fluorescence scanning microscope, locations are specifically adapted to receive microscope slides and biochip cartridges such as Affymetrix's “Gene Chip®”. A scanning microscope under computer control, employing such a focusing action, enables unattended scanning of biochips with a simple and economical instrument. Also shown are flexure-mounting of a support plate to define the hinge axis, techniques for automatically determining position and focus, and a rotatably oscillating flying micro-objective scanner combined with the tilting plane focus system. Construction and control techniques are shown that realize simple and accurate focusing. Methods of examination of biological materials are disclosed. Simple and efficient focused scanning with a flying micro-objective of ordered arrays of nucleotides and nucleic acid fragments carried upon a microscope slide or other substrate is disclosed. Quantified fluorescence imaging is economically achieved by combined use of the described scanning and focusing arrangement and use of simple and accurate calibration modules respectively for example for Affymetrix's “Gene Chip” microarray modules and for microscope slides.

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