HOLOGRAMS HAVING STANDARD REFERENCE COLOR Russian patent published in 1998 - IPC

Abstract RU 2121160 C1

FIELD: medical engineering. SUBSTANCE: two sets of spectra are provided so that reference beam of incident white color lets observer see color useable as key color at definite angle when illuminating hologram or diffraction grid composition. EFFECT: unambiguous determination of variable colors on multicolor hologram or composition. 6 dwg

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RU 2 121 160 C1

Authors

Uliss Vivarelli

Dates

1998-10-27—Published

1993-06-08—Filed