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4115005 |
Method for optically measuring a roughness profile of surface
A method for measuring a roughness profile of a surface optically is provided. The method essentially comprises projecting through a converging optical system a pair of light rays on a surface to...
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4088408 |
Device for measuring the contour of a surface
The invention is a device for measuring the contour of a surface. Light from a source is imaged by a lens onto the surface which concentrates the energy from the source into a spot. A scanning...
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4031368 |
Adaptive control of cutting machining operations
For adaptive control of cutting machining operations, measured quantities characterizing optimized productivity are utilized. These quantities are connected with the wear of the tool and with the...
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4019066 |
Measuring the surface roughness of a moving sheet material
The invention is concerned with measuring "on-line" the surface roughness of a moving sheet material, e.g. a paper web. The method comprises illuminating the moving web, preferably at a low angle,...
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4017188 |
Surface profile measuring device and method
An arrangement for measuring the profile of surfaces having a characteristic one-directional lay with sufficient resolution to determine the surface roughness thereof is disclosed, comprising a...
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3971956 |
Measurement of surface roughness
The roughness of a surface is determined by directing a laser beam, or other electromagnetic radiation, onto a number of small areas of the surface in turn and measuring intensity of radiation...
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3922093 |
Device for measuring the roughness of a surface
An apparatus is disclosed for measuring the roughness of a surface with improved accuracy. The apparatus, several embodiments of which are disclosed, includes a device for illuminating a surface...
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3836787 |
APPARATUS FOR EXAMINING THE SURFACE OF AN OBJECT USING ELECTROMAGNETIC RADIATION
In order to examine the surface of an object to view detail substantially smaller than the wavelength of the radiation used, the object is mounted behind a plate having an aperture of size equal to...
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3815998 |
SURFACE CONTRAST SYSTEM AND METHOD
A system and method for generating a shadow image of the surface of an object, the image capable of quantitative surface measurement by direct measurement of the slope of the surface at a given...
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3804521 |
OPTICAL DEVICE FOR MEASURING SURFACE ROUGHNESS
An optical device for characterizing the surface roughness of a sample is disclosed. A source of spatially coherent light having a wide spectral bandwidth is provided together with means to direct...
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3782827 |
OPTICAL DEVICE FOR CHARACTERIZING THE SURFACE OR OTHER PROPERTIES OF A SAMPLE
An optical device is disclosed which is useful for characterizing the surface topography of an opaque sample and for characterizing other properties of transparent samples. In the reflecting mode,...
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3749496 |
AUTOMATIC QUALITY CONTROL SURFACE INSPECTION SYSTEM FOR DETERMINING THE CHARACTER OF A SURFACE BY MEASURING THE SHAPE AND INTENSITY OF A MODULATED BEAM
An apparatus that automatically inspects the inside surface of a cylindrical workpice, such as a brake cylinder, by reflecting a beam of laser light from that surface. The intensity of the...
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3663107 |
NONDESTRUCTIVE METHOD FOR MEASURING STATES OF SURFACE AND APPARATUS FOR CARRYING OUT SAID METHOD
A beam of parallel rays which emerges from a perpendicular object-grid is reflected from a mirror surface and transmitted through a centered optical system to a Lummer dividing cube located at the...
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3591291 |
METHOD AND APPARATUS FOR SENSING REFLECTED LIGHT AND DIFFUSED LIGHT FROM A SURFACE TO INDICATE THE ROUGHNESS OF SAID SURFACE
The roughness of a relatively smooth surface is measured by directing a collimated beam of light against that surface, by disposing one light-sensitive element at the angle of reflection, by...
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3509349 |
SURFACE FINISH INSPECTION DEVICE UTILIZING A PLURALITY OF LIGHT SOURCES
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3439988 |
APPARATUS FOR INSPECTING A REFLECTIVE SURFACE WHICH INCLUDES A PROJECTOR OF A PATTERN OF LINES HAVING DIFFERENT THICKNESSES
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3396627 |
Method and device for measuring surface roughness
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3222978 |
Surface roughness meter
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3081665 |
Method and apparatus for optical inspection of glass sheets
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2963938 |
Surface meters for detecting irregularities on transparent elements
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2889737 |
Apparatus for optical inspection of glass sheets
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