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SU1452361A1 - Method of stabilization of holographic installations - Google Patents

Method of stabilization of holographic installations

Info

Publication number
SU1452361A1
SU1452361A1 SU4263942/25A SU4263942A SU1452361A1 SU 1452361 A1 SU1452361 A1 SU 1452361A1 SU 4263942/25 A SU4263942/25 A SU 4263942/25A SU 4263942 A SU4263942 A SU 4263942A SU 1452361 A1 SU1452361 A1 SU 1452361A1
Authority
SU
USSR - Soviet Union
Prior art keywords
stripes
interference
period
fed
field
Prior art date
Application number
SU4263942/25A
Other languages
Russian (ru)
Inventor
В.П. Горелик
С.Н. Коваленко
Б.Г. Турухано
Original Assignee
Ленинградский Институт Ядерной Физики Им.Б.П.Константинова
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ленинградский Институт Ядерной Физики Им.Б.П.Константинова filed Critical Ленинградский Институт Ядерной Физики Им.Б.П.Константинова
Priority to SU4263942/25A priority Critical patent/SU1452361A1/en
Application granted granted Critical
Publication of SU1452361A1 publication Critical patent/SU1452361A1/en

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Abstract

FIELD: optical homography. SUBSTANCE: moire stripes of big period are formed with the aid of auxiliary diffraction element mounted in stabilizing field of interference stripes. Modulating sinusoidal voltage with frequency ω making interference and moire stripes move in space in agreement with harmonic law with amplitude smaller than their period is fed to controlling element. Photoconverter transforms distribution of intensity of moire stripes into complex harmonic signal from which correcting signal proportional to displacement of interference stripes is extracted. Correcting signal is amplified and fed with reverse sign to controlling element. In this case diffraction grating matched by period to period of interference field is used as auxiliary diffraction element. Modulating sinusoidal voltage having frequency 22ω is additionally fed to controlling element. Amplitude of modulating movements of interference stripes is chosen on the basis of certain conditions. EFFECT: increased precision of stabilization of holographic installations. 2 dwg
SU4263942/25A 1987-04-29 1987-04-29 Method of stabilization of holographic installations SU1452361A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU4263942/25A SU1452361A1 (en) 1987-04-29 1987-04-29 Method of stabilization of holographic installations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU4263942/25A SU1452361A1 (en) 1987-04-29 1987-04-29 Method of stabilization of holographic installations

Publications (1)

Publication Number Publication Date
SU1452361A1 true SU1452361A1 (en) 1995-07-09

Family

ID=60536365

Family Applications (1)

Application Number Title Priority Date Filing Date
SU4263942/25A SU1452361A1 (en) 1987-04-29 1987-04-29 Method of stabilization of holographic installations

Country Status (1)

Country Link
SU (1) SU1452361A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7762591B2 (en) 2004-09-15 2010-07-27 Ovd Kinegram Ag Security document

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7762591B2 (en) 2004-09-15 2010-07-27 Ovd Kinegram Ag Security document

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