GB1328877A - Apparatus and method for optically inspecting the physical condition of a surface - Google Patents

Apparatus and method for optically inspecting the physical condition of a surface

Info

Publication number
GB1328877A
GB1328877A GB4807870A GB4807870A GB1328877A GB 1328877 A GB1328877 A GB 1328877A GB 4807870 A GB4807870 A GB 4807870A GB 4807870 A GB4807870 A GB 4807870A GB 1328877 A GB1328877 A GB 1328877A
Authority
GB
United Kingdom
Prior art keywords
mirror
signal
inspecting
oct
photo
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.)
Expired
Application number
GB4807870A
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB1328877A publication Critical patent/GB1328877A/en
Expired 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
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores

Abstract

1328877 Inspecting a surface ITT INDUSTRIES Inc 9 Oct 1970 [27 Oct 1969] 48078/70 Heading G1A A device for inspecting an internal surface 32, Fig.1, comprises a light source 10 providing a light beam to pass through holes in a mirror 14 and a lens 29 so as to be reflected off a further mirror 28, attached to an axially movable probe 22, on to the surface to be inspected; part of the light reflected from the surface then travelling back as shown to be received by a photosensitive element 42. The lens 29 and mirror 28 are housed in a tube 22 which is rotated so as to scan the surface. Known irregularities such as screw holes in the surface can be "gated out" of the signal from the photo-sensitive element 42 by the apparatus shown in Fig. 2, the outside of the tube 22 having an area of light absorbing material corresponding to the presence of each known irregularity, such that a further photoelectric element 56 will be able to provide a signal every time there is a known irregularity present. The signals from the photo-sensitive elements 42 and 56 can be subtracted from one another Fig. 5 (not shown) to provide a signal which indicates only unknown irregularities and flaws.
GB4807870A 1969-10-27 1970-10-09 Apparatus and method for optically inspecting the physical condition of a surface Expired GB1328877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86961269A 1969-10-27 1969-10-27

Publications (1)

Publication Number Publication Date
GB1328877A true GB1328877A (en) 1973-09-05

Family

ID=25353912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4807870A Expired GB1328877A (en) 1969-10-27 1970-10-09 Apparatus and method for optically inspecting the physical condition of a surface

Country Status (4)

Country Link
CA (1) CA930214A (en)
DE (1) DE2052672A1 (en)
FR (1) FR2065549B1 (en)
GB (1) GB1328877A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475035A (en) * 1981-06-11 1984-10-02 Vektronics, Inc. Method and apparatus for scanning
US4849643A (en) * 1987-09-18 1989-07-18 Eaton Leonard Technologies Optical probe with overlapping detection fields
US5008555A (en) * 1988-04-08 1991-04-16 Eaton Leonard Technologies, Inc. Optical probe with overlapping detection fields

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305661A (en) * 1979-02-27 1981-12-15 Diffracto, Ltd. Method and apparatus for determining physical characteristics of objects and object surfaces
JPS5744807A (en) * 1980-08-29 1982-03-13 Hitachi Ltd Flatness measuring apparatus
JPS57204509A (en) * 1981-06-11 1982-12-15 Bekutoronikusu Inc Scanning method and apparatus
DE3277079D1 (en) * 1982-01-07 1987-10-01 Sumitomo Electric Industries Device for monitoring the interior of a conduit
JPH0652170B2 (en) * 1986-02-25 1994-07-06 株式会社オカダ Optical imaging type non-contact position measuring device
FR2615613B1 (en) * 1987-05-22 1990-11-02 Renault Vehicules Ind AUTOMATIC APPARATUS FOR EVALUATING THE POLISHING DEGREE OF A MOTOR SHIRT
FR2631697B1 (en) * 1988-05-17 1991-07-26 Hispano Suiza Sa APPARATUS FOR OPTICAL CONTROL OF THE INTERNAL PROFILE OF A TUBE OR BORE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475035A (en) * 1981-06-11 1984-10-02 Vektronics, Inc. Method and apparatus for scanning
US4849643A (en) * 1987-09-18 1989-07-18 Eaton Leonard Technologies Optical probe with overlapping detection fields
US5008555A (en) * 1988-04-08 1991-04-16 Eaton Leonard Technologies, Inc. Optical probe with overlapping detection fields

Also Published As

Publication number Publication date
DE2052672A1 (en) 1971-05-06
FR2065549B1 (en) 1976-05-14
CA930214A (en) 1973-07-17
FR2065549A1 (en) 1971-07-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees