CRI ni iki kandi ni gute wahitamo ibikoresho by'amatara?

Igipimo cy'amabara (CRI) ni uburyo mpuzamahanga buhuriweho bwo gusobanura isura y'amabara y'amasoko y'urumuri. Cyagenewe gutanga isuzuma ry'imibare nyaryo ry'urugero ibara ry'ikintu kiri munsi y'isoko y'urumuri ryapimwe rihuye n'ibara ryagaragajwe munsi y'isoko y'urumuri. Komisiyo mpuzamahanga y'izuba (CIE) ishyira igipimo cy'amabara y'urumuri rw'izuba kuri dogere 100, kandi igipimo cy'amabara y'amatara ashyushye kiri hafi cyane y'izuba bityo kikaba gifatwa nk'isoko ry'urumuri ry'icyitegererezo ryiza.

CRI ni ikintu cy'ingenzi mu gupima ubushobozi bw'isoko ry'urumuri mu kongera ibara ry'ikintu. Iyo CRI ifite agaciro kanini, ubushobozi bw'isoko ry'urumuri mu kugarura ibara ry'ikintu burushaho gukomera, kandi niko birushaho koroha ku jisho ry'umuntu gutandukanya ibara ry'ikintu.

CRI ni uburyo bwo gupima imikorere y'isoko ry'urumuri mu kumenya amabara ugereranije n'isoko ry'urumuri risanzwe (nk'iry'izuba). Ni igipimo cyemewe na benshi kandi ni bwo buryo bwonyine bwo gusuzuma no gutanga raporo ku ibara ry'isoko ry'urumuri. Gushushanya amabara ni isuzuma ry'ubuziranenge ripima urwego isoko ry'urumuri rigaragaza ibara ry'ikintu, ni ukuvuga uburyo ibara riboneka mu buryo bufatika.
Ishusho y'amabara y'urumuri rwinshi (CRI≥90) ishobora gutanga urumuri rworoshye, ikagabanya umunaniro wo kureba neza, igatuma urwego rwo kureba rurushaho kuba rwiza kandi ishusho ikarushaho kuba nziza; iha abakoresha isura y'amabara menshi n'urumuri rwo hanze rworoshye. Ishusho y'amabara menshi igira ingaruka nziza zo kubyara amabara, kandi amabara tubona yegereye amabara y'ibanze karemano (amabara ari munsi y'izuba); ifoto y'amabara make ifite ifoto y'amabara make, bityo ibara ritandukanye tubona rinini.

Ni gute wahitamo ibara ry'amabara/ibara ry'amabara mu gihe uguze ibikoresho by'amatara?

Mu guhitamo ibara, amahame abiri akurikizwa, ari yo ihame ryo kwerekana amabara neza n'ihame ryo kwerekana amabara neza.

（1） Ihame ry'ishusho ry'amabara ryizewe

Ihame ryo kwerekana amabara yemewe bivuze ko kugira ngo hagaragazwe neza ibara ry’umwimerere ry’ikintu, hagomba gutoranywa isoko y’urumuri ifite ibara ry’agaciro kanini. Muri iki gihe, guhitamo bishobora gukorwa hashingiwe ku gaciro ka Ra. Uko agaciro ka Ra kaba kanini, niko urwego rwo kugarura ibara ry’umwimerere ry’ikintu rurushaho kuba rwinshi. Porogaramu zitandukanye zifite ibisabwa bitandukanye kugira ngo hagaragazwe neza amabara yemewe y’amasoko y’urumuri.

Dukurikije ahantu hatandukanye hakoreshwa, Komisiyo Mpuzamahanga ishinzwe Kumurika (CIE) igabanya igipimo cy'ibara ry'amabara mu byiciro bitanu:

（2） Ihame ry'ingaruka ku ibara

Ihame ryo kwerekana amabara mu buryo bufatika ni uko mu bice bimwe na bimwe nko mu tubati tw’inyama, kugira ngo hagaragazwe amabara runaka kandi hagaragazwe ubuzima bwiza, hagomba gutoranywa ikimenyetso cy’amabara runaka. Hashingiwe ku kwemeza ko agaciro ka Ra kujuje ibisabwa, ikimenyetso cy’amabara cyihariye gihuye nacyo cyongerwa bitewe n’ibara ry’ikintu cyamuritswe.

Mu gace k’imurikagurisha ry’inyama mu maduka manini n’amaduka atandukanye, ikimenyetso cy’amabara R9 cy’aho urumuri ruturuka ni ingenzi cyane, kuko ibara ry’inyama akenshi riba rigizwe n’umutuku, kandi R9 iri hejuru ishobora gutuma inyama zigaragara neza kandi ziryoshye.

Ku bice nk'ibitaramo n'ama studio asaba ko habaho uruhu rukora neza, ibara rya R15 ry'urumuri rigomba kuba ryujuje ubuziranenge bwo hejuru.

KwaguraKubunararibonye

Igipimo cy’amatara akoresha incandescent ni 100. Ariko, mu buzima, hari ubwoko bwinshi bw’amatara akoresha incandescent afite ikoreshwa ritandukanye. Kubwibyo, agaciro kayo ka Ra ntabwo gahwanye. Dushobora kuvuga ko ari hafi ya 100, ifatwa nk'isoko y'urumuri ifite imikorere myiza yo gukoresha ibara. Ariko, ubu bwoko bw'urumuri bufite ubushobozi buke bwo gukoresha urumuri kandi ntibugira akamaro ko kuzigama ingufu no kurinda ibidukikije. Mu buryo bunyuranye, nubwo amatara ya LED ari make gato ugereranyije n'amatara akoresha incandescent mu bijyanye n'imikorere yo gukoresha ibara, yabaye isoko y'urumuri ikunzwe cyane bitewe n'imiterere yayo yo kuzigama ingufu no kutangiza ibidukikije.

Byongeye kandi, iyo umubiri w’umuntu uhuye n’urumuri rudakora neza mu gutanga amabara igihe kirekire, ubushobozi bwo kumva uturemangingo tw’ijisho ry’umuntu buzagenda bugabanuka buhoro buhoro, kandi ubwonko bushobora kwibanda cyane mu gihe cyo kumenya ibintu, ibyo bikaba byatera umunaniro w’amaso ndetse no kutabona neza.

Igipimo cy'amabara y'aho amatara yo mu ishuri aturuka ntikigomba kuba munsi ya 80. Igipimo cy'amabara make cyane y'amatara yo mu ishuri kizagira ingaruka ku buryo amaso y'abanyeshuri amenya neza amabara y'ibintu, bigatuma ibintu bitabasha kugaragaza amabara nyayo y'umwimerere. Ibi nibikomeza igihe kirekire, bizatuma ubushobozi bwo gutandukanya amabara bugabanuka kandi bukagabanuka, ibyo bikazana ibibazo bikomeye byo kubona no kurwara amaso ku banyeshuri nko kutabona amabara no kudakora neza.

Igipimo cy'amabara cya Ra>90 gikoreshwa mu matara yo mu biro, kunyurwa kwayo n'isura yayo bishobora kugabanya urumuri rwayo ku kigero kirenga 25% ugereranije n'ibikoresho by'amatara bifite itara rito rigaragaza amabara (Ra<60). Igipimo cy'amabara n'urumuri rw'isoko y'urumuri bigena hamwe uburyo ibidukikije bibonerana, hari isano iri hagati y'urumuri n'igipimo cy'amabara.