Optics: measuring and testing – Inspection of flaws or impurities – Transparent or translucent material
Patent
1978-05-02
1980-06-03
Corbin, John K.
Optics: measuring and testing
Inspection of flaws or impurities
Transparent or translucent material
250562, 356431, G01N 2132
Patent
active
042059143
ABSTRACT:
There is provided a digital device for creating a series of digital signals indicative of the profile in certain surface variations of a natural tobacco leaf. The light intensity characteristic of an emitted light from various locations on the natural tobacco leaf are scanned in succession across the leaf at parallel positions. The light intensity at the various locations creates a digital signal indicative of whether or not the light intensity is high, low or intermediate. The color profile of the leaf could be created by these signals; however, in accordance with the invention, a digital signal is created when the light intensity signal shifts from one value to another. At that time, a transition signal is created which can be combined to form a transition profile of the leaf which is indicative of the actual profile and color variations of the leaf itself. This information can be used for locating a wrapper cutter at the desired position on the leaf for subsequent cutting of the wrapper from the leaf.
REFERENCES:
patent: 4011457 (1977-03-01), Wolf
patent: 4075498 (1978-02-01), Takasuka et al.
patent: 4094325 (1978-06-01), Stoffers et al.
Anderson Verner
Hevenor, Jr. Charles M.
Logan David J.
Rich Leonard G.
Corbin John K.
Gulf & Western Corporation
Rosenberger R. A.
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