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2 158 898

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IPC

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Application

99105326/28, 1999-03-11

(24)

Start date

1999-03-11

(22)

Actual filing date

1999-03-11

(45)

Published

2000-11-10

(72)

Inventor

Bezuglyj B.A.Tarasov O.A.Fedorets A.A.

(73)

Holder

Tjumenskij Gosudarstvennyj Universitet

METHOD OF CONTACT-FREE TEST OF PLANENESS OF SURFACE Russian patent published in 2000 - IPC

Abstract RU 2158898 C1

FIELD: instrumentation, detection of lack of planeness of free surface of liquid. SUBSTANCE: method employs phenomenon of thermal capillary convection induced by thermal action of laser radiation. Information is extracted from interference picture ( thermal capillary response ) of laser beam inducing convection observed on screen placed in cross-section of caustic, that is reflected from free surface of liquid deformed by thermal capillary convection. Planeness of free surface of liquid is tested by deviation of form of thermal capillary response from round one which corresponds to flat free surface. EFFECT: simplified test of planeness of free surface of liquid. 2 dwg

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RU 2 158 898 C1

Authors

Bezuglyj B.A.

Tarasov O.A.

Fedorets A.A.

Dates

2000-11-10—Published

1999-03-11—Filed

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