KR930020143A - Surface measuring device - Google Patents
Surface measuring device Download PDFInfo
- Publication number
- KR930020143A KR930020143A KR1019920004263A KR920004263A KR930020143A KR 930020143 A KR930020143 A KR 930020143A KR 1019920004263 A KR1019920004263 A KR 1019920004263A KR 920004263 A KR920004263 A KR 920004263A KR 930020143 A KR930020143 A KR 930020143A
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- KR
- South Korea
- Prior art keywords
- phase
- phase shift
- light
- glass plate
- image
- Prior art date
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- Instruments For Measurement Of Length By Optical Means (AREA)
Abstract
본 발명은 스팩클 간섭계를 이용한 표면 측정장치에 관한 것으로, 레이저 빔을 위상이동을 위해 고전압의 압전소자를 사용하는 종래 장치와는 달리 간단한 기계적 조작에 의해 위상을 정확히 이동시킬 수 있고 간섭 패턴의 영상획득이 용이해질 수 있게 한 것이다.The present invention relates to a surface measuring apparatus using a speckle interferometer, unlike a conventional apparatus using a high voltage piezoelectric element for phase shifting a laser beam, the phase can be accurately moved by a simple mechanical manipulation and the image of the interference pattern It is to facilitate the acquisition.
본발명은 광원인 반도체 레이저(1)와, 상기 반도체 레이저의 빔을 참조광과 물체광으로 분할하는 빔 스플리터(3)와, 참조광과 물체광의 길이를 맞추기 위한 빔 스플리터(7), 빔의 방향을 유도하는 복수개의 거울(4)(6)(8)과, 빔의 확산시키는 복수개의 빔 익스펜더(5)(9)와, 참조광의 위상을 이동시키는 유리판(19)과, 광영상을 전기적 신호로 바꾸어 주는 CCD 카메라(13)와, 상기 CCD 카메라의 영상을 획득하고 연산하는 영상처리부(14)와, 처리결과를 시각적으로 표현하는 모니터(15)와, 상기 유리판의 각도를 조절하는 위상이동수단과, 상기 위상이동수단에 의한 위상이동값과 실제 위상이동값을 비교하는 위상이동 감지수단을 구비하여서 된 표면 측정 장치이다.The present invention relates to a semiconductor laser (1) as a light source, a beam splitter (3) for dividing a beam of the semiconductor laser into reference light and object light, a beam splitter (7) for adjusting the length of the reference light and object light, and a beam direction. A plurality of inducing mirrors (4) (6) (8), a plurality of beam expanders (5) (9) for diffusing the beam, a glass plate (19) for shifting the phase of the reference light, and an optical image as an electrical signal A CCD camera 13 for switching, an image processor 14 for acquiring and calculating an image of the CCD camera, a monitor 15 for visually expressing the processing result, phase shifting means for adjusting the angle of the glass plate, and And a phase shift detecting means for comparing the phase shift value by the phase shift means and the actual phase shift value.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본발명 장치를 나타낸 구성도.2 is a block diagram showing the present invention.
제3도는 본발명 장치에 적용되는 위상이동수단의 구성도.3 is a block diagram of a phase shifting means applied to the present invention.
제4도는 본발명 장치에서 위상이동과 회전각도와의 관계를 나타낸 상세도.4 is a detailed view showing the relationship between the phase shift and the rotation angle in the present invention.
제5도는 본발명 장치에 적용되는 위상이동 감지수단의 구성도.5 is a block diagram of a phase shift detecting means applied to the present invention.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920004263A KR930020143A (en) | 1992-03-16 | 1992-03-16 | Surface measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920004263A KR930020143A (en) | 1992-03-16 | 1992-03-16 | Surface measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
KR930020143A true KR930020143A (en) | 1993-10-19 |
Family
ID=67257103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920004263A KR930020143A (en) | 1992-03-16 | 1992-03-16 | Surface measuring device |
Country Status (1)
Country | Link |
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KR (1) | KR930020143A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100422378B1 (en) * | 2002-01-15 | 2004-03-11 | (주) 인텍플러스 | Fizeau interferometer using angled end-face optical fiber source |
KR100453710B1 (en) * | 2002-02-09 | 2004-10-20 | 국방과학연구소 | Surface measurement apparatus and method thereof |
KR100469752B1 (en) * | 2001-05-14 | 2005-02-02 | 마츠시타 덴끼 산교 가부시키가이샤 | Apparatus and method for measuring flatness of thin plate |
-
1992
- 1992-03-16 KR KR1019920004263A patent/KR930020143A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100469752B1 (en) * | 2001-05-14 | 2005-02-02 | 마츠시타 덴끼 산교 가부시키가이샤 | Apparatus and method for measuring flatness of thin plate |
KR100422378B1 (en) * | 2002-01-15 | 2004-03-11 | (주) 인텍플러스 | Fizeau interferometer using angled end-face optical fiber source |
KR100453710B1 (en) * | 2002-02-09 | 2004-10-20 | 국방과학연구소 | Surface measurement apparatus and method thereof |
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