??????? : ??????? (??????) ????? SI ?????? ??? ?????????? ???????, ??? ??????" ????? ???????? ????? ???????????? ??? ?????? ??????????????, ?????????? ??????? ????? ?? ?????????? ????? ?????????????? ??? ?????? ???? ??????????????? ??? ????????, ????? ???????? ??????? ?????? ?????????? ????? ?????????????? ?????? ?????? ????? ?????????,????? ????? ????????? ??? ????????.????? ????? Lumens ?? ???????????? ???? ?? ????? ????? ?? ??????? ?? ????? ?????. ??????? ?? ?????? ?? ??????? ?????? ??????? ?? ?????????????. 1 lm = 1 cd.sr

?? ????? ???? ????????????? ??? ???? ??????? ?????? ????? ?????????????? ?? ?????? ????? ??? ?????? ?? ???? ??? steradian ?????? ?????????? ??????? ???????????? ? ???? ?????? ??? ?? ???????.???????????????, ?? ??????? ??-??????? ?????? ????? ????? ???? ????????? ?????? ?????????? ??????? ??????? 4π lumens.???? ??? ??????????? ???? ???? ?? ?????????? ???? ?? ????,????? ? ??????? 2π lumens ?????????????? ?????? ??????? ???????? ?????????????.?????????? ?????? ??? ???????? ?????????? ??? ??????? ?? candela .??????? ????? ???????? ????? ????? ?????? ???? .???? ?????? ????? ???? ???? ???? ?????? ??? ????? ???????? ?? ??? ??????.

?? ???? ??? candelas ???? lumens ????? ?????????? ???? ?????????? ?????? ???? ???? ????? ( ??????? ???????) ??? ??????? ???????.???????, ????? ???? ???? ????? ???? ????? ?????? ??????????? ?? ?? ???????????????????.????? ????? ????? ????? ?????? ????? ?? ???? ??? ?????? ?????????? ??????? 683 lumens ????? ??????.????? ? ??????? ???????? ????? ????? ????? 1/683 ?????? ???????????,????????? ?????????? ???????.

23 ???? ????????? ??????????? ???? 1,500-1,600 LM ?????????????.???? ????????? ??????????? ??????, ??? ???????????? ????? ?????? ???? ????? ????? ????????? ?????? ?? ??????. ??? ???? ??????

• ?????
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?????

1. "Lesson introduction to solid angles". Retrieved Oct 4, 2010.
2. Bryant, Robert H. "Lumens, Illuminance, Foot-candles and bright shiny beads…". The LED Light. Retrieved Oct 4, 2010.