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Title:
METHOD FOR OBTAINING THE IMAGE OF AN OBJECT, DEVICE FOR CARRYING OUT SAID METHOD AND DEVICE FOR DELIVERING LOW COHERENT OPTICAL RADIATION
Document Type and Number:
WIPO Patent Application WO2003104744
Kind Code:
A8
Abstract:
The invention relates to the study of the internal structure of objects with the aid of optical means. The inventive optical system for a device for delivering low coherent optical radiation is embodied in the form of at least two lens components (19, 20) which are arranged approximately confocally and have a positive optical power, thereby ensuring the constancy of the travel time of the radiation from a set point on a surface (28) of a transverse scanning to a corresponding conjugate point on an image plane. The structure of the system also ensures the correction of the aberration of the optical path of the radiation which is directed towards a studied object, said aberration being associated with a transverse scanning irrespective the surface (28) thereof is flat or curved. In another embodiment of the system, wherein the components (19, 20) are arranged confocally, the longitudinal scanning is carried out by modifying the optical path of the radiation from the surface (28) to the optical system, i.e. from the end surface (17) of the distal section of an optical fibre to the optical system. For this purpose, a device (10) for longitudinal scanning is arranged inside an optofibre probe, thereby making it possible to offset accordingly the radiation focusing point during the longitudinal scanning of the studied object, i.e. make it possible to superpose the position of the radiation focusing point with the position of a coherence window, and therefore simultaneously displace them.

Inventors:
GELIKONOV GRIGORY VALENTINOVIC (RU)
GELIKONOV VALENTIN MIKHAILOVIC (RU)
MYAKOV ALEXSEY VICTOROVICH (RU)
FELDCHTEIN FELIX ISAAKOVICH (US)
Application Number:
PCT/RU2003/000252
Publication Date:
April 29, 2004
Filing Date:
June 04, 2003
Export Citation:
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Assignee:
GELIKONOV GRIGORY VALENTINOVIC (RU)
GELIKONOV VALENTIN MIKHAILOVIC (RU)
MYAKOV ALEXSEY VICTOROVICH (RU)
FELDCHTEIN FELIX ISAAKOVICH (US)
International Classes:
A61B1/00; A61B5/00; A61B10/00; G01B9/02; G01B11/24; G01N21/17; G01N21/47; G02B9/06; G02B23/24; G02B23/26; G02B26/08; (IPC1-7): G01B9/02; G02B26/08; A61B6/00
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