Color and brightness discrimination of white LEDs

Patricia Rizzo; Andrew Bierman; Mark S. Rea

doi:10.1117/12.452575

Color and brightness discrimination of white LEDs

Patricia Rizzo, Andrew Bierman, Mark S. Rea

Research output: Contribution to journal › Conference article › peer-review

10 Scopus citations

Abstract

Great strides have recently been made in the development of white light emitting diodes (LEDs), although perceptible variations remain in the color and brightness of nominally identical products. The objective of this study was to examine color and brightness discriminability between different white LEDs when used as illuminants of colored and achromatic objects. A method of successive comparisons was used to assess discriminability rather than the more typical simultaneous (side-by-side) comparisons using a "same-different" response protocol. Three-dimensional "tolerance zones" were developed based upon discriminability in chromaticity (u', v') and luminance when illuminating the colored and achromatic objects. These "tolerance zones" could be used to establish specification tolerances for different lighting applications.

Original language	English
Pages (from-to)	235-246
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4776
DOIs	https://doi.org/10.1117/12.452575
State	Published - 2002
Externally published	Yes
Event	Solid State Lighting II - Seattle, WA, United States Duration: 9 Jul 2002 → 11 Jul 2002

Keywords

Chromaticity
Discrimination
LED
Luminance
Tolerance zones
White light LED

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10.1117/12.452575

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title = "Color and brightness discrimination of white LEDs",

abstract = "Great strides have recently been made in the development of white light emitting diodes (LEDs), although perceptible variations remain in the color and brightness of nominally identical products. The objective of this study was to examine color and brightness discriminability between different white LEDs when used as illuminants of colored and achromatic objects. A method of successive comparisons was used to assess discriminability rather than the more typical simultaneous (side-by-side) comparisons using a {"}same-different{"} response protocol. Three-dimensional {"}tolerance zones{"} were developed based upon discriminability in chromaticity (u', v') and luminance when illuminating the colored and achromatic objects. These {"}tolerance zones{"} could be used to establish specification tolerances for different lighting applications.",

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language = "English",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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T1 - Color and brightness discrimination of white LEDs

AU - Rizzo, Patricia

AU - Bierman, Andrew

AU - Rea, Mark S.

PY - 2002

Y1 - 2002

N2 - Great strides have recently been made in the development of white light emitting diodes (LEDs), although perceptible variations remain in the color and brightness of nominally identical products. The objective of this study was to examine color and brightness discriminability between different white LEDs when used as illuminants of colored and achromatic objects. A method of successive comparisons was used to assess discriminability rather than the more typical simultaneous (side-by-side) comparisons using a "same-different" response protocol. Three-dimensional "tolerance zones" were developed based upon discriminability in chromaticity (u', v') and luminance when illuminating the colored and achromatic objects. These "tolerance zones" could be used to establish specification tolerances for different lighting applications.

AB - Great strides have recently been made in the development of white light emitting diodes (LEDs), although perceptible variations remain in the color and brightness of nominally identical products. The objective of this study was to examine color and brightness discriminability between different white LEDs when used as illuminants of colored and achromatic objects. A method of successive comparisons was used to assess discriminability rather than the more typical simultaneous (side-by-side) comparisons using a "same-different" response protocol. Three-dimensional "tolerance zones" were developed based upon discriminability in chromaticity (u', v') and luminance when illuminating the colored and achromatic objects. These "tolerance zones" could be used to establish specification tolerances for different lighting applications.

KW - Chromaticity

KW - Discrimination

KW - LED

KW - Luminance

KW - Tolerance zones

KW - White light LED

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DO - 10.1117/12.452575

M3 - Conference article

AN - SCOPUS:0036980292

SN - 0277-786X

VL - 4776

SP - 235

EP - 246

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Solid State Lighting II

Y2 - 9 July 2002 through 11 July 2002

ER -

Color and brightness discrimination of white LEDs

Abstract

Keywords

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