Optical coherence tomographic imaging apparatus and optical...

Details Optical coherence tomographic imaging apparatus and optical... Optical coherence tomographic imaging apparatus and optical...

2011-04-26

2011-04-26

Chowdhury, Tarifur (Department: 2886)

Optics: measuring and testing

By light interference

For dimensional measurement

Reexamination Certificate

active

07933024

ABSTRACT:
An optical coherence tomographic imaging apparatus which has a light intensity varying portion provided on a first optical path for guiding a measuring beam to an object for varying an intensity of the measuring beam; an illumination condition varying portion for varying an illumination condition of the measuring beam that has passed through the light intensity varying portion for the object between a first illumination condition in which a center part of the measuring beam is not blocked and a second illumination condition in which the center part of the measuring beam is blocked; and an image forming portion for weighting a first tomographic image acquired in the first illumination condition and a second tomographic image acquired in the second illumination condition and composing the weighted first second tomographic images to form a third tomographic image.

REFERENCES:
patent: 2007/0263226 (2007-11-01), Kurtz et al.
patent: 2006/180926 (2006-07-01), None

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