JPS5776519A - Method and device for acquisition of optical phase information - Google Patents

Method and device for acquisition of optical phase information

Info

Publication number
JPS5776519A
JPS5776519A JP15260780A JP15260780A JPS5776519A JP S5776519 A JPS5776519 A JP S5776519A JP 15260780 A JP15260780 A JP 15260780A JP 15260780 A JP15260780 A JP 15260780A JP S5776519 A JPS5776519 A JP S5776519A
Authority
JP
Japan
Prior art keywords
subject
grid
laser beam
equidistantly
bright
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP15260780A
Other languages
Japanese (ja)
Inventor
Nobuo Nishida
Yuzo Ono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15260780A priority Critical patent/JPS5776519A/en
Publication of JPS5776519A publication Critical patent/JPS5776519A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/2441—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using interferometry

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Holo Graphy (AREA)

Abstract

PURPOSE:To increase the using efficiency of the optical energy, by projecting and also scanning a 1-dimensional pattern in which the bright and dark spots are aligned alternately and equidistantly onto a subject by means of a laser beam scanner and thus forming a deformed grid pattern. CONSTITUTION:A laser beam 2 sent from a laser device 1 is converted into a laser beam having a strip-type converging point through a beam converter 5 and modulated by a grid 6. This modulated beam irradiates a hologram disk 7 through the 1st perforated mirror 8. Furthermore the beam 2 passes through the perforation of the 2nd perforated mirror 11 and is reflected by mirrors 12 and 13, and made incident to a subject 10 with an incident angle theta. The grid 6 and the subject 10 are set at the image forming position of the disk 7, and accordingly the strip-type focused beam passed through the grid 6 is projected on the subject 10. The laser beam on the subject 10 has a form which is thin in the main scanning direction and thick in the subscanning direction and is constituted by the bright and dark points which are aligned alternately and equidistantly.
JP15260780A 1980-10-30 1980-10-30 Method and device for acquisition of optical phase information Pending JPS5776519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15260780A JPS5776519A (en) 1980-10-30 1980-10-30 Method and device for acquisition of optical phase information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15260780A JPS5776519A (en) 1980-10-30 1980-10-30 Method and device for acquisition of optical phase information

Publications (1)

Publication Number Publication Date
JPS5776519A true JPS5776519A (en) 1982-05-13

Family

ID=15544090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15260780A Pending JPS5776519A (en) 1980-10-30 1980-10-30 Method and device for acquisition of optical phase information

Country Status (1)

Country Link
JP (1) JPS5776519A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117333A (en) * 1977-03-24 1978-10-13 Fujitsu Ltd Information reader
JPS5436967A (en) * 1977-08-29 1979-03-19 Fuji Photo Optical Co Ltd Observing method of contour moire fringes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117333A (en) * 1977-03-24 1978-10-13 Fujitsu Ltd Information reader
JPS5436967A (en) * 1977-08-29 1979-03-19 Fuji Photo Optical Co Ltd Observing method of contour moire fringes

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