If you have documentation or a photograph of a Zvi Yehuda Colorimeter , consider sharing it with the Israel Society of Applied Physics or SPIE —it could help preserve a forgotten chapter of Israeli instrumentation history.
The Zvi Yehuda Colorimeter: A Niche Instrument in Optical Metrology zvi yehuda colorimeter
In the world of precise color measurement, names like Hunter, Minolta, and X-Rite dominate. However, the Zvi Yehuda Colorimeter represents a lesser-known, likely specialized or historical instrument—potentially developed within Israeli academic or defense research circles. Zvi Yehuda (often associated with applied physics or electro-optics in the 1960s–80s) may have contributed a unique filter-based or tristimulus design for specific industrial or scientific tasks. If you have documentation or a photograph of