Some Experiments on the Luminance-brightness Discrepancy for Red Light Emitting Diodes (LEDs)

Lucia R. Ronchi Istituto Nazionale di Ottica, 6, Largo E. Fermi, 50125 Florence, Italy

Renzo Macii Istituto Nazionale di Ottica, 6, Largo E. Fermi, 50125 Florence, Italy

Simonetta R. Stefanacci Istituto Nazionale di Ottica, 6, Largo E. Fermi, 50125 Florence, Italy

Abstract

The luminance-brightness discrepancy is studied by comparing a white stimulus (A-illuminant) with a narrow-band one (red LED). The effect of test-field size is investigated in both simultaneous and successive brightness matches. The results are tentatively interpreted in terms of the ratio of chromatic to achromatic activity.

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Some Experiments on the Luminance-brightness Discrepancy for Red Light Emitting Diodes (LEDs)

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Some Experiments on the Luminance-brightness Discrepancy for Red Light Emitting Diodes (LEDs)

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