Leuschner, F.W. (Friedrich Wilhelm)2019-05-302019-05-302019-092019Van der Westhuyzen, JG 2019, The role of the reference source in improving the CIE colour-rendering index for visual perception optimisation, PhD Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/69252>S2019http://hdl.handle.net/2263/69252Thesis (PhD (Electronic Engineering))--University of Pretoria, 2019.English: The technology for the measurement of colour-rendering and colour quality is not new, but many parameters related to this issue are currently changing. A number of standard methods have been developed and are used by different specialty areas of the lighting industry. CIE 13.3 has been the accepted standard implemented by many users and has been used for many years. Light-emitting diode (LED) technology moves at a rapid pace and as this lighting source finds wider acceptance, it appears that traditional colour-rendering measurement methods produce inconsistent results. Practical application of various types of LEDs yielded results that challenged conventional thinking regarding colour quality measurement of light sources. This study investigates colour perception of human evaluators when applied to the traditional side-by-side booth method and also when applied to a unique double booth with rotating mirror. The reference source consists of an established incandescent lamp. The test source was assembled using four LEDs with wavelengths spanning the photometric spectrum fairly evenly. Recent studies have shown that the anatomy and physiology of the human eye is more complex than formerly accepted. Therefore, the development of updated measurement methodology also forces a fresh look at functioning and colour perception of the human eye, especially with regard to LEDs. For this reason, colour perception was investigated, especially with regards to age. isiZulu: Ubuchwepheshe bokukala isinikezambala kanye nezingabunjalo lombala akuyona into entsha, kodwa amapharamitha amaningi ahlobene nale nkinga aseyaguquka njengamanje. Iningi lamasu ajwayelekile asethuthukisiwe futhi asetshenziswa yizindawo zobungcweti ezahlukene zemboni yokukhanyisa. I-CIE 13.3 yilona zinga elamukelekile elisetshenziswa abasebenzisi abaningi futhi eselisetshenziswe iminyaka eminingi. Ubuchwepheshe besiguqulagesi buhamba ngesivinini esisheshayo futhi njengoba lo mthombo wokukhanyisa uthola ukwamukeleka okubanzi, kubonakala sengathi amasu avamile esikali sesinikezambala akhiqiza imiphumela eguquguqukayo. Ukusetshenziswa okunokwenzeka kwezinhlobo ezahlukene zeziguqulagesi kuveze imiphumela ephonsele inselele ekucabangeni kwenjayelo mayelana nokukalwa kwezingabunjalo lombala wemithombo yokukhanya. Lo mbhalo wocwaningo uphenya ukuqondwa kombala kwabahlaziyi abangabantu uma kusetshenziswe endleleni yokwenza evamileyo yohlangothi-nohlangothi okuthiwa yi-booth nalapho futhi kusetshenziswe kwi-booth ephindeke kabili eyingqalizivele enesibuko esijikajikayo. Umthombo womsuka uqukethe uhlobo lwelambu elaziwayo okuthiwa yi-incandescent. Umthombo wokuhlola uhlanganiswe kusetshenziswa iziguqulagesi ezine ezinokuqhelelana kwamaza okugxamalazisa izinhlobonhlobo zesithombe sokulinganisa ngamamitha cishe ngokulinganayo. Imibhalo yocwaningo yakamuva iveze ukuthi isayensi yomumo kanye nefiziyoloji yelihlo lomuntu inkimbinkimbi kakhulu kunalokho okwakwamukeliwe ngaphambilini. Ngakho-ke, ukuthuthukiswa kwendlela yokwenza yokukala ebuyekeziwe kuphinde kuphoqelele ukubukeka okusha ekusebenzeni nasekuqondeni umbala kwehlo lomuntu, ikakhulukazi maqondana neziguqulagesi. Ngalesi sizathu, ukuqondwa kombala kuye kwaphenywa, ikakhulukazi maqondana neminyaka. Afrikaans: Die tegnologie vir die meting van kleurweergawe en kleurkwaliteit is nie nuut nie, maar baie parameters wat met hierdie kwessie verband hou, verander tans. 'n Aantal standaardmetodes is ontwikkel en word deur verskillende spesialiteitsareas van die beligtingsbedryf gebruik. CIE 13.3 is die aanvaarde standaard wat deur baie gebruikers geïmplementeer is en word al vir baie jare gebruik. Ligemitterende diode (LED)-tegnologie beweeg teen 'n vinnige pas en namate hierdie beligtingsbron wyer aanvaarding vind, blyk dit dat tradisionele kleurweergawe-metingsmetodes inkonsekwente resultate lewer. Praktiese toepassing van verskeie tipes LED's het resultate opgelewer wat konvensionele denke ten opsigte van kleurkwaliteitmeting van ligbronne uitgedaag het. Hierdie studie ondersoek kleurpersepsie van menslike evalueerders wanneer dit toegepas word op die tradisionele sy-aan-sy stand-metode en ook wanneer dit toegepas word op 'n unieke dubbelhokkie met ʼn roterende spieël. Die verwysingsbron bestaan ​​uit 'n gevestigde gloeilamp. Die toetsbron is saamgestel met behulp van vier LED's met golflengtes wat die fotometriese spektrum redelik eweredig oorspan. Onlangse studies het getoon dat die anatomie en fisiologie van die menslike oog meer kompleks is as wat voorheen aanvaar is. Daarom dwing die ontwikkeling van opgedateerde meetmetodologie ook 'n vars blik op die funksionering en kleurpersepsie van die menslike oog af, veral met betrekking tot LED's. Om hierdie rede is kleurpersepsie ondersoek, veral met betrekking tot ouderdom. Sepedi: Theknolotši ya kelo go tšweletša mebala le boleng bja mebala ga se ye mpsha, eupša ditekanyetšo tše ntši tše di amanago le taba ye ga bjale di a fetoga. Mekgwa ye mmalwa ya maemo e hlamilwe gomme e šomišwa ke mafelo a go fapana a go ikgetha a intasteri ya mabone. CIE 13.3 e bile maemo a amogetšwego ao a phethagaditšwego ke badiriši ba bantši gomme e šomišitšwe mengwaga ye mentši. Theknolotši ya diode ya go ntšha seetša (LED) e sepela ka lebelo le legolo gomme ge mothopo wo wa mabone o hwetša kamogelo ye e nabilego, go bonala gore mekgwa ya setšo ya go ela ya go tšweletša mebala e tšweletša dipoelo tše di sa dumelelanego. Tirišo ye e šomago ya mehuta ye e fapanego ya di-LED e ile ya tšweletša dipoelo tšeo di hlohlago kgopolo ye e tlwaelegilego mabapi le go ela boleng bja mmala bja methopo ya seetša. Thuto ye e nyakišiša temogo ya mmala ya basekaseki ba batho ge e dirišwa mokgweng wa setšo wa lepokisana la go bapelana ka thoko le gape ge e dirišwa leokising la moswananoši la go ba le mahlakore a mabedi la go ba le seipone sa go dikologa. Mothopo wa tšhupetšo o na le lebone leo le hlomilwego la incandescent. Mothopo wa teko o ile wa kopanywa ka go šomiša di-LED tše nne tšeo di nago le maphoto ao a akaretšago sepektheremo sa (sa kelo ya maatla a seetša) ka go lekana ka toka. Dinyakišišo tša morago bjale di bontšhitše gore thulaganyo ya mmele le thulaganyo ya mmele wa leihlo la motho di raragane kudu go feta kamoo di bego di amogelwa ka gona peleng. Ka go rialo, tlhabollo ya mokgwa wo mpšhafaditšwego wa go kelo gape o gapeletša go lebelela ka bofša go šoma le temogo ya mmala ya leihlo la motho, kudu ge go amana le LEDs. Ka lebaka le, temogo ya mmala e ile ya nyakišišwa, kudu-kudu mabapi le mengwaga.en© 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.UCTDElectronic/Illumination engineeringThesis