JPS57197407A - Optical spherometer - Google Patents

Optical spherometer

Info

Publication number
JPS57197407A
JPS57197407A JP8290581A JP8290581A JPS57197407A JP S57197407 A JPS57197407 A JP S57197407A JP 8290581 A JP8290581 A JP 8290581A JP 8290581 A JP8290581 A JP 8290581A JP S57197407 A JPS57197407 A JP S57197407A
Authority
JP
Japan
Prior art keywords
light
prism
made incident
reflected
point
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.)
Granted
Application number
JP8290581A
Other languages
Japanese (ja)
Other versions
JPH0128882B2 (en
Inventor
Hiroshi Mizutani
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.)
Mitsutoyo Manufacturing Co Ltd
Original Assignee
Mitsutoyo Manufacturing 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 Mitsutoyo Manufacturing Co Ltd filed Critical Mitsutoyo Manufacturing Co Ltd
Priority to JP8290581A priority Critical patent/JPS57197407A/en
Publication of JPS57197407A publication Critical patent/JPS57197407A/en
Publication of JPH0128882B2 publication Critical patent/JPH0128882B2/ja
Granted 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
    • G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness

Abstract

PURPOSE:To constitute the measuring ranges into a plurality and to increase the utilizing efficiency of light, by constituting in such a way that a light from a light source transmits through a half reflecting mirror and is made incident on a spherical surface to be checked with a stereo visual angle alpha and the light reflected on the half mirror is made incident with two different stereo angles different from the alpha via a prism. CONSTITUTION:An opposite light from a light source 11 is made incident on a point A on a spherical surface to be measured 5 with a stereo visual angle alpha via a rectangular prism 16, a slit 12, a half transmission prism 13, a prism 18, and an objective lens 20. The light reflected on the prism 13 is made incident to a point B on the surface 5 with a stereo visual angle beta via prisms 21-25 and an objective lens 26. Further, the light reflected on the prism 25 is reflected on a reflection mirror 27 and is made incident on a point B' on a symmetrical axis 15 and the focus B is retarded. For example, the reflected light from the point A is formed via the prism 13, lenses 28, 29, 30A, 30B, 31 and 32, an eyepiece lens 33. Thus, the measuring range can be of a plurality and the utilizing efficiency of light can be increased.
JP8290581A 1981-05-29 1981-05-29 Optical spherometer Granted JPS57197407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8290581A JPS57197407A (en) 1981-05-29 1981-05-29 Optical spherometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8290581A JPS57197407A (en) 1981-05-29 1981-05-29 Optical spherometer

Publications (2)

Publication Number Publication Date
JPS57197407A true JPS57197407A (en) 1982-12-03
JPH0128882B2 JPH0128882B2 (en) 1989-06-06

Family

ID=13787269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8290581A Granted JPS57197407A (en) 1981-05-29 1981-05-29 Optical spherometer

Country Status (1)

Country Link
JP (1) JPS57197407A (en)

Also Published As

Publication number Publication date
JPH0128882B2 (en) 1989-06-06

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