Lub lens lub kaum sab xis ntawm lub lens LED yuav tsum yog ib lub lens secondary. Muaj ib lub lens saum lub teeb ntawm LED teeb. Lub teeb tawm ntawm lub teeb lub teeb yog feem ntau 180 degrees. Lub kaum sab xis ntawm lub nqaj tawm los ntawm ob lub lens yuav ua me dua. Txawv lub kaum ntse ntse, lub kaum ntse ntse zaum kawg kuj yog qhov sib txawv, feem ntau yog 25 degrees 30 degrees 45 degrees 60 degrees 120 degrees thiab hais txog.
Lub kaum sab xis ntawm lub lens LED pom txog qhov kev taw qhia ntawm lub teeb, qhov loj ntawm lub aperture, thiab qhov loj ntawm cheeb tsam illuminated, thiab muaj peev xwm muab xam siv cov kev ua zauv uas muaj nuj nqis.
Lub tangent muaj nuj nqi yuav siv los laij rau hauv lub ntiaj teb aperture ntawm cov ces kaum ntawm lub lens thiab cov heights sib txawv. Nws cov qhov loj me me yuav siv los xam lub cheeb tsam irradiation.
30 degree angle (tan15 ° = 2-√3) * 2
45 degree kaum sab xis (tan22.5 ° = √2-1) * 2
60 degree angle (tan30 ° = √3 / 3) * 2
120 degree angle (tan60 ° = √3) * 2
Cov qauv hauv cheeb tsam S = πr ^ 2
Txawv cov ces kaum, txawv apertures thiab qhov chaw tseem ceeb thaj tsam:
30 degree kaum sab xis:
1 meter aperture inch 0.56 M irradiation cheeb tsam 0.246 square metres
2 meters aperture inch 1.12M irradiation cheeb tsam 0.985 square metres
3 meters aperture inch 1.68 M irradiation cheeb tsam 2.217 square metres
45 degree kaum sab xis:
1 meter aperture inch 0.828M Irradiation cheeb tsam 0.538 square metres
2 meter aperture inch 1.656M cheeb tsam Irradiation 2.154 square meters
3 meters aperture inch 2.484 M irradiation thaj tsam 4.864 square metres
60 degree kaum sab xis:
1 meter aperture inch 1.15 M irradiation cheeb tsam 1.046 square meters
2 meters aperture inch 2.3M irradiation cheeb tsam 4.189 square metres
3 meters aperture inch 3.46 M irradiation cheeb tsam 9.424 square meters
120 degree kaum sab xis:
1 meter aperture inch 3.464M Irradiation cheeb tsam 9.424 square meters
2 meters aperture inch 6.928M irradiation cheeb tsam 37.697 square meters
3 meters aperture inch 10.392M irradiation cheeb tsam 84.818 square meters