Patent · US Active

Tilt minimization through intensity control of light source

US9097517B2 · kind B2 · utility

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8Claims
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Key dates

Filing dateJul 31, 2013
Grant dateAug 4, 2015
Priority date—
Expiry dateMar 28, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B21/244
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

The power input to the light source of a microscope is varied as necessary to maintain a constant degree of detector saturation as the objective is moved toward a best-focus position. Focus is found by tracking the source's intensity necessary to maintain the detector irradiance at a constant level. The in-focus position is reached when the power input (and correspondingly the intensity of the light emitted by the source) reaches a minimum. The concept can be applied in a similar manner to minimize or eliminate tilt in a sample.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.