Colorimeter

Details Colorimeter Colorimeter

2005-07-12

2005-07-12

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

By shade or color

Tristimulus examination

C356S402000, C356S417000, C250S226000, C250S2140RC

Reexamination Certificate

active

06917429

ABSTRACT:
A colorimeter or color measuring device measures color of a sample or an object, and displays measurement value or values according to user defined index or indices, calculated by a user-defined formula. Data of the user-defined formula is read in from outside of the colorimeter and converted into a coded form which can be executed by a controller of the calorimeter. The data of the user-defined formula or the coded data is stored in the colorimeter. Accordingly, the colorimeter has good portability and convenience despite its capability of expressing the colors of various samples or objects by user-defined original index or indices.

REFERENCES:
patent: 4773761 (1988-09-01), Sugiyama et al.
patent: 5400138 (1995-03-01), Peterson et al.
patent: 5859709 (1999-01-01), Imura
patent: 6014221 (2000-01-01), Plude, Jr.
patent: 6535278 (2003-03-01), Imura
patent: 6707553 (2004-03-01), Imura
patent: 2003/0011767 (2003-01-01), Imura et al.

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