Luminous Efficacy TablesThe light sensitivity of the normal human eye has been studied extensively. The response of the eye as a function of frequency is called the luminous efficacy of the eye. It has been tabulated for both the light-adapted (photopic) case and the dark-adapted (scotopic) case. |  |
Wavelength l (nm) | Photopic Luminous EfficacyVl | Photopic Conversionlm/W | ScotopicLuminous EfficacyVl | Scotopic Conversionlm/W | 380 | 0.000039 | 0.027 | 0.000589 | 1.001 | 390 | 0.000120 | 0.082 | 0.002209 | 3.755 | 390 | 0.000120 | 0.082 | 0.002209 | 3.755 | 400 | 0.000396 | 0.270 | 0.009290 | 15.793 | 410 | 0.001210 | 0.826 | 0.034840 | 59.228 | 420 | 0.004000 | 2.732 | 0.096600 | 164.220 | 430 | 0.011600 | 7.923 | 0.199800 | 339.660 | 440 | 0.023000 | 15.709 | 0.328100 | 557.770 | 450 | 0.038000 | 25.954 | 0.455000 | 773.500 | 460 | 0.060000 | 40.980 | 0.567000 | 963.900 | 470 | 0.090980 | 62.139 | 0.676000 | 1149.200 | 480 | 0.139020 | 94.951 | 0.793000 | 1348.100 | 490 | 0.208020 | 142.078 | 0.904000 | 1536.800 | 500 | 0.323000 | 220.609 | 0.982000 | 1669.400 | 507 | 0.444310 | 303.464 | 1.000000 | 1700.000 | 510 | 0.503000 | 343.549 | 0.997000 | 1694.900 | 520 | 0.710000 | 484.930 | 0.935000 | 1589.500 | 530 | 0.862000 | 588.746 | 0.811000 | 1378.700 | 540 | 0.954000 | 651.582 | 0.655000 | 1105.000 | 550 | 0.994950 | 679.551 | 0.481000 | 817.700 | 555 | 1.000000 | 683.000 | 0.402000 | 683.000 | 560 | 0.995000 | 679.585 | 0.328800 | 558.960 | 570 | 0.952000 | 650.216 | 0.207600 | 352.920 | 580 | 0.870000 | 594.210 | 0.121200 | 206.040 | 590 | 0.757000 | 517.031 | 0.065500 | 111.350 | 600 | 0.631000 | 430.973 | 0.033150 | 56.355 | 610 | 0.503000 | 343.549 | 0.015930 | 27.081 | 620 | 0.381000 | 260.223 | 0.007370 | 12.529 | 630 | 0.265000 | 180.995 | 0.003335 | 5.670 | 640 | 0.175000 | 119.525 | 0.001497 | 2.545 | 650 | 0.107000 | 73.081 | 0.000677 | 1.151 | 660 | 0.061000 | 41.663 | 0.000313 | 0.532 | 670 | 0.032000 | 21.856 | 0.000148 | 0.252 | 680 | 0.017000 | 11.611 | 0.000072 | 0.122 | 690 | 0.008210 | 5.607 | 0.000035 | 0.060 | 700 | 0.004102 | 2.802 | 0.000018 | 0.030 | 710 | 0.002091 | 1.428 | 0.000009 | 0.016 | 720 | 0.001047 | 0.715 | 0.000005 | 0.008 | 730 | 0.000520 | 0.355 | 0.000003 | 0.004 | 740 | 0.000249 | 0.170 | 0.000001 | 0.002 | 750 | 0.000120 | 0.082 | 0.000001 | 0.001 | 760 | 0.000060 | 0.041 | 0.000000 | 0.000 | 770 | 0.000030 | 0.020 | 0.000000 | 0.000 |
| Index
Photometry concepts
Vision concepts |