Configuration detecting method and system
First Claim
1. A configuration detecting method comprising the steps of passing a laser beam from a laser beam source into a first Fourier transformation lens, reflecting said transformed laser beam by a light deflector, passing said reflected light beam into a second Fourier transformation lens for Fourier inverse transformation, reflecting said inversely-transformed laser beam by a first reflecting mirror to form a laser beam spot on an object to be checked, passing said spot beam into said second lens in the form of a light beam by means of a second reflecting mirror, and passing said spot beam from said second lens into said first lens in the form of a light beam by means of said deflector to form a real image of the laser spot on a photoelectric converter.
1 Assignment
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Accused Products
Abstract
Method and system of detecting a configuration of a three-dimensional object, in which use is made of a spot beam to be directed to the object. The spot beam is caused to scan the object in a horizontal direction and the resulting spot image is detected through observation in a direction transverse to the horizontal direction. The system includes a laser light source, two Fourier transformation lenses having their Fourier transformation planes intersecting each other on the optical axes of the lenses on a light deflector, a photoelectric converter provided on the object plane of one of the lenses, the laser light source being disposed on the same meridian as the converter, and at least one reflecting mirror provided for forming a real image of the spot of the beam on the object.
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Citations
11 Claims
- 1. A configuration detecting method comprising the steps of passing a laser beam from a laser beam source into a first Fourier transformation lens, reflecting said transformed laser beam by a light deflector, passing said reflected light beam into a second Fourier transformation lens for Fourier inverse transformation, reflecting said inversely-transformed laser beam by a first reflecting mirror to form a laser beam spot on an object to be checked, passing said spot beam into said second lens in the form of a light beam by means of a second reflecting mirror, and passing said spot beam from said second lens into said first lens in the form of a light beam by means of said deflector to form a real image of the laser spot on a photoelectric converter.
- 5. A configuration detecting system comprising a laser beam source means for generating a laser beam, a first Fourier transformation lens for receiving the generated laser beam and for transforming the generated laser beam, a light deflector means arranged for reflecting the transformed laser beam from the first Fourier transformation lens, a second Fourier transformation lens for receiving the reflected transformed laser beam and for providing a Fourier inverse transformation thereof, a first reflecting mirror means for reflecting the inversely-transformed laser beam so as to form a laser beam spot on an object to be checked, means for passing light from said laser beam spot on the object to be checked into said second Fourier transformation lens as a light beam, said light deflector means receiving the light beam of said laser spot beam passing through said second Fourier transformation lens and for deflecting said light beam into said first lens so as to form a real image of the laser spot on a photoelectric converter means.
Specification