Color Light Output: Difference between revisions
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'''Color Light Output''', also known as '''Color Brightness''', or '''CLO''' is a specification that provides information on a projector’s ability to reproduce color. Color Light Output is specified in the [[lumen_(unit)|lumen unit]] and measures a color projection system's ability to correctly reproduce color brightness. |
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==Objective== |
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The Color Light Output specification has been devised by one manufacturer to their own advantage. |
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==Background== |
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In 2009, the [[National Institute of Standards and Technology]] (NIST) issued a scientific paper stating that in addition to the typical white light brightness rating of display devices, there was a need for providing "an equivalent measurement that will better describe a projector's color performance when rendering full color imagery".<ref>[http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901354 NIST paper NISTIR 6657, January 2009: "A Rational Methodology for Estimating the Luminous Flux Based upon Color Primaries from Digital Projection Displays"'']</ref> |
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In 2010, over 8.5 million projectors were purchased.<ref>[http://www.pacificmediaassociates.com/press-releases/pacific-media-predicts-unit-shipments-of-projectors-will-grow-35-percent-per-year-compounded-through-2015/ Pacific Media Associates Press Release, March 24, 2011: Pacific Media Predicts Unit Shipments of Projectors Will Grow 35 Percent Per Year Through 2015]</ref> Although image quality consistently ranked at the top of purchase criteria, there was no standardized way to measure the color performance in displays, which is a key aspect of image quality, until the release of the Color Light Output specification . |
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In 2012, the [[Society for Information Display]] (SID), a global professional organization focused on the development of the display industry, published the Color Light Output standard to provide display and projector buyers with an easy metric to evaluate color performance. The Color Light Output standard was developed after the SID conducted comprehensive research and performance evaluations and concluded that a color performance standard was scientifically valid and relevant for the display industry. Color Light Output measurement methodologies for displays, including projectors are specified in a document entitled '''The International Display Measurement Standard''' ('''IDMS''').<ref>[http://www.icdm-sid.org/downloads SID/ICDM/VESA paper, June 1, 2012: "''The International Display Measurement Standard''"]</ref> which was developed in collaboration with SID's affiliated organizations: the International Committee for Display Metrology (ICDM) and the [[VESA|Video Electronics Standards Association (VESA)]]. |
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==References== |
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{{Reflist}} |
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== External links == |
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* [http://www.colorlightoutput.com/ Official CLO (Color Brightness) information website] |
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{{Display technology}} |
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[[Category:Optoelectronics]] |
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[[Category:Digital imaging]] |
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Revision as of 14:55, 25 January 2016