IT1140425B - Interferometric deformation measurement system - Google Patents

Interferometric deformation measurement system

Info

Publication number
IT1140425B
IT1140425B IT25919/81A IT2591981A IT1140425B IT 1140425 B IT1140425 B IT 1140425B IT 25919/81 A IT25919/81 A IT 25919/81A IT 2591981 A IT2591981 A IT 2591981A IT 1140425 B IT1140425 B IT 1140425B
Authority
IT
Italy
Prior art keywords
marker
photodetector
laser
photodetectors
character
Prior art date
Application number
IT25919/81A
Other languages
Italian (it)
Other versions
IT8125919A0 (en
Inventor
Anatoly Prokopievich Bykov
Original Assignee
Anatoly Prokopievich Bykov
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 Anatoly Prokopievich Bykov filed Critical Anatoly Prokopievich Bykov
Priority to IT25919/81A priority Critical patent/IT1140425B/en
Publication of IT8125919A0 publication Critical patent/IT8125919A0/en
Application granted granted Critical
Publication of IT1140425B publication Critical patent/IT1140425B/en

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  • Length Measuring Devices By Optical Means (AREA)

Abstract

The system uses a laser to form interference images of a system of marker characters on the test object has an interference image recording system designed to increase the accuracy whilst ensuring a high degree of resolution. A modulater (3) which shifts the frequency of the laser light is placed between the laser (2) and the optical system (4) which forms the light beams used to form the interference image. The recording system contains a photoreceiver block (8) with two photodetectors (22,23). One photodetector (22) is optically connected to a first marker (28) character and the other to a second marker character (19). The outputs of the photodetectors are connected to an electronic phase measurement instrument (9). A third photodetector and marker are arranged so that the phase difference variation of the photodetector output signals does not exceed 360 degrees over the entire range of deformation measurement.
IT25919/81A 1981-12-30 1981-12-30 Interferometric deformation measurement system IT1140425B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT25919/81A IT1140425B (en) 1981-12-30 1981-12-30 Interferometric deformation measurement system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT25919/81A IT1140425B (en) 1981-12-30 1981-12-30 Interferometric deformation measurement system

Publications (2)

Publication Number Publication Date
IT8125919A0 IT8125919A0 (en) 1981-12-30
IT1140425B true IT1140425B (en) 1986-09-24

Family

ID=11218143

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25919/81A IT1140425B (en) 1981-12-30 1981-12-30 Interferometric deformation measurement system

Country Status (1)

Country Link
IT (1) IT1140425B (en)

Also Published As

Publication number Publication date
IT8125919A0 (en) 1981-12-30

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