Boots – shoes – and leggings
Patent
1991-07-10
1994-08-02
Black, Thomas G.
Boots, shoes, and leggings
8400, 8507, G01J 328, G01N 2125
Patent
active
053351878
ABSTRACT:
A color matching and lens dyeing apparatus and method in which a color is chosen, the color is converted to a numerical value on the basis of its transmissivity at different wavelengths of light and the transmissivity is converted into a lens dyeing prescription. The numerically determined information on the desired color is processed by a computer to obtain the proper compound ratios, dye baths and dyeing times. A set of standard dye baths are prepared and lenses are dyed therein. The dyed lenses are measured for transmissivity at different wavelengths and the transmissivity data is stored in a computer. To prepare a dying prescription, a target set of transmissivity characteristivity is selected and the transmissivity data of the standard dye baths is combined to obtain a dyeing prescription to obtain a dyed lens having the same transmissivity characteristics as the target.
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Kobayashi Toru
Koizumi Shuzo
Uehara Noriaki
Black Thomas G.
Seiko Epson Corporation
Zanelli Michael
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