Reptile Lamp Database

CCT:1019 6624K
CRI DC:1017 4.72E-4
CRI R01:1002 53.8 (6624K)
CRI R02:1003 49.7 (6624K)
CRI R03:1004 45.0 (6624K)
CRI R04:1005 13.8 (6624K)
CRI R05:1006 3.2 (6624K)
CRI R06:1007 -6.0 (6624K)
CRI R07:1008 13.2 (6624K)
CRI R08:1009 29.9 (6624K)
CRI R09:1010 53.1 (6624K)
CRI R10:1011 52.9 (6624K)
CRI R11:1012 11.4 (6624K)
CRI R12:1013 41.3 (6624K)
CRI R13:1014 34.4 (6624K)
CRI R14:1015 62.9 (6624K)
CRI R15:1016 53.2 (6624K)
CRI Ra:1001 25.3 (6624K)
DC<5.4E-3:1018 true

Area (m²):1040 1.1946E-5
Illuminance (lux):1042 1.8343E3
Luminance (candela per m²):1044 1.8343E3
Luminous Flux (lumen):1041 2.1913E-2
Luminous intensity (candela):1043 2.1913E-2
Observer:1038 Photopic
Solid Angle (steradians):1039 1.0
Source:1037 FLMT09760

Device Source:1022 FLMT09760
Integration Begin:1023 280.00
Integration End:1024 800.00
Method:1025 Uses Simpson's Rule for integration.
Moles of Photons:1034 2.0419E-11
PAR uMoles/m²/sec:1036 2.9365E1
PAR uMoles:1035 1.7066E-5
Photons/cm²/sec:1032 2.1159E15
Total Photons:1033 1.2297E13
dBm:1030 -1.0118E1
eV:1031 2.9548E13
uJoule/cm²:1028 3.9629E1
uJoule:1026 4.7341E0
uWatt/cm²:1029 8.1458E2
uWatt:1027 9.7309E1

Colorimetry is the science to describe physically the human color perception. The wavelength range 380 nm - 780 nm is visible to humans and detected by three different photoreceptors. Many Reptiles see the range 350 nm - 800 nm and have an additional UV photoreceptor in their retina.

Whereas a spectrometer measures the intensity in every tiny wavelength interval resulting in thousands of individual intensities, the human eye only measures three intensities detected by the three cones. The same is true for the reptile eye with usually three or four photoreceptors. Effectively the detailled spectrum displayed above reduces to a much compacter bar graph displayed below. The photoreceptor sensitivites from these L-Cone, M-Cone, S-Cone, and U-Cone are used, they are chosen as an average of measured reptile photoreceptor sensitivity curves. The bar graph also shows as reference the intensity seen by the three or four photoreceptors for average sunlight (ASTM spectrum).

From these three numbers the colour coordinate and the correlated colour temperature for humans are calculated using the CIE standard method. I adapted this concept to a "3 cone reptile (M,S,U)" and a "4 cone reptile (L,M,S,U)". I am sure, that this adaption to other colour spaces makes sense mathematically and this is also done in scientific research regarding colour vision of animals, however I have not seen calculation of colour temperatures for other animals in the scientific literature. Even if it is hypothetical, at least this shows, how arbitrary the colour temperature is, and that the colour temperature calculated for humans does not apply to reptiles. The colour spaces also show the colour coordinates of different phases of daylight ((ids 1, 338 – 451, 511 – 513 ), indicated by crosses, coloured in the appriximate colour perceived by a human.

	Human (CIE)	3 cone reptile	4 cone reptile
Cone Excitation
Colour Coordinate	( 0.31 ; 0.33 )	( 0.28 ; 0.48 )	( 0.27 ; 0.2 ; 0.35 )
CCT	6600 Kelvin	8000 Kelvin	6000 Kelvin
distance		0.15	0.12
colour space			3-D-graph not implemented yet

Vitamin D3 is produced by UVB radiation around 300 nm. 7DHC/ProD3 present in the skin is converted to PreD3 when absorbing an UV photon. PreD3 can be converted back to ProD3, to Lumisterol, or to Tachysterol when absorbing another UV photon or can be converted to Vitamin D3 in a warm environment.

This process prevents any overdose of vitamin D3 from UV radiation with a spectrum similar to sunlight. As a comparison the solar spectra at 20°(id:14) and at 85°(id:21) solar angle are shown.

The ratio of the readings of two solarmeters 6.2 (UVB) and 6.5 (UV index) has proven a useful and very simply number to acess the spectral shape in the vitamin-d3-active region.

Effective irradiances are calculated for all ranges, actionspectra and radiometers currently present in this database.

The calculation method is a numerical implementation (Simpson's rule) of the formula

To learn more about calculating effective irradiances and radiometers I recommend this excellent report on UVB meters: Characterizing the Performance of Integral Measuring UV-Meters (pdf).

total ( 0 nm - 0 nm)	829 µW/cm² = 8.29 W/m²
UVC ( 0 nm - 280 nm)	0 µW/cm² = 0 W/m²
non-terrestrial ( 0 nm - 290 nm)	0.537 µW/cm² = 0.00537 W/m²
total2 ( 250 nm - 880 nm)	827 µW/cm² = 8.27 W/m²
UVB (EU) ( 280 nm - 315 nm)	47.5 µW/cm² = 0.475 W/m²
UVB (US) ( 280 nm - 320 nm)	50.4 µW/cm² = 0.504 W/m²
UVA+B ( 280 nm - 380 nm)	90.9 µW/cm² = 0.909 W/m²
Solar UVB ( 290 nm - 315 nm)	46.9 µW/cm² = 0.469 W/m²
UVA D3 regulating ( 315 nm - 335 nm)	8.73 µW/cm² = 0.0873 W/m²
UVA (EU) ( 315 nm - 380 nm)	43.4 µW/cm² = 0.434 W/m²
UVA2 (medical definition) ( 320 nm - 340 nm)	6.96 µW/cm² = 0.0696 W/m²
UVA (US) ( 320 nm - 380 nm)	40.4 µW/cm² = 0.404 W/m²
UVA1 (variant) ( 335 nm - 380 nm)	34.7 µW/cm² = 0.347 W/m²
UVA1 (medical) ( 340 nm - 400 nm)	43.3 µW/cm² = 0.433 W/m²
vis. UVA ( 350 nm - 380 nm)	31.9 µW/cm² = 0.319 W/m²
VIS Rep3 ( 350 nm - 600 nm)	570 µW/cm² = 5.7 W/m²
VIS Rep4 ( 350 nm - 700 nm)	709 µW/cm² = 7.09 W/m²
purple ( 380 nm - 420 nm)	80.9 µW/cm² = 0.809 W/m²
VIS ( 380 nm - 780 nm)	721 µW/cm² = 7.21 W/m²
VIS2 ( 400 nm - 680 nm)	644 µW/cm² = 6.44 W/m²
PAR ( 400 nm - 700 nm)	667 µW/cm² = 6.67 W/m²
tmp ( 400 nm - 1100 nm)	728 µW/cm² = 7.28 W/m²
blue ( 420 nm - 490 nm)	183 µW/cm² = 1.83 W/m²
green ( 490 nm - 575 nm)	202 µW/cm² = 2.02 W/m²
yellow ( 575 nm - 585 nm)	45.2 µW/cm² = 0.452 W/m²
orange ( 585 nm - 650 nm)	104 µW/cm² = 1.04 W/m²
red ( 650 nm - 780 nm)	107 µW/cm² = 1.07 W/m²
IR2 ( 655 nm - 685 nm)	39.3 µW/cm² = 0.393 W/m²
IRA ( 700 nm - 1400 nm)	60.5 µW/cm² = 0.605 W/m²
IRB ( 1400 nm - 3000 nm)	0 µW/cm² = 0 W/m²

Erythema	2.13 UV-Index
Pyrimidine dimerization of DNA	18.1 µW/cm²
Photoceratitis	4.06 µW/cm²
Photoconjunctivitis	0.165 µW/cm²
DNA Damage	0.469
Vitamin D3	8.64 µW/cm²
Photosynthesis	460 µW/cm²
Luminosity	1920 lx
Human L-Cone	284 µW/cm²
Human M-Cone	245 µW/cm²
Human S-Cone	165 µW/cm²
CIE X	255 µW/cm²
CIE Y	269 µW/cm²
CIE Z	296 µW/cm²
PAR PPFD	33.7 µmol/m²/s
Extinction preD3	55.2 e-3*m²/mol
Extinction Tachysterol	189 e-3*m²/mol
Exctincition PreD3	25600 m²/mol
Extinction Lumisterol	11.7 m²/mol
Exctincition Tachysterol	239000 m²/mol
Extinction 7DHC	13.4 m²/mol
L-Cone	239 µW/cm²
M-Cone	179 µW/cm²
S-Cone	312 µW/cm²
U-Cone	156 µW/cm²
UVR - ICNIRP 2004	1.98 Rel Biol Eff
Melatonin Supression	213 µW/cm²
Blue Light Hazard	187 µW/cm² (97.5 µW/cm² per 1000 lx)
CIE 174:2006 PreVit D3	8.96 µW/cm²
Lumen Reptil	2020 "pseudo-lx"
Vitamin D3 Degradation	9.2 µW/cm²
Actinic UV	1.97 µW/cm² (10.2 mW/klm)
Exctincition Lumisterol	16000 m²/mol
Exctincition 7DHC	16800 m²/mol
Exctincition Toxisterols	3050 m²/mol
UV-Index2	2.04 UV-Index (285-400nm)

Solarmeter 6.2 (UVB, pre 2010)	50.5 µW/cm²
Solarmeter 6.5 (UV-Index, pre 2010)	2.36
Leybold UVB	41.3 µW/cm²
Leybold UVA	27.7 µW/cm²
Leybold UVC	0.00945 µW/cm²
DeltaOhm UVB	49.7 µW/cm²
DeltaOhm UVC	8.06 µW/cm²
Vernier UVB	16.9 µW/cm²
Vernier UVA	37.7 µW/cm²
Gröbel UVA	45.6 µW/cm²
Gröbel UVB	22.9 µW/cm²
Gröbel UVC	0.012 µW/cm²
Luxmeter	2000 lx
Solarmeter 6.4 (D3)	7.37 IU/min
UVX-31	54.8 µW/cm²
IL UVB	0.0192 µW/cm²
IL UVA	39.9 µW/cm²
Solarmeter 6.5 (UVI, post 2010)	1.96 UV-Index
Solarmeter 6.2 (UVB, post 2010)	28.4 µW/cm² (Solarmeter Ratio = 14.5)
Solarmeter AlGaN 6.5 UVI sensor	32.7 UV Index
GenUV 7.1 UV-Index	1.64 UV-Index
Solarmeter 10.0 (Global Power) (manuf.)	7.99 W/m²
Solarmeter 4.0 (UVA)	0.697 mW/cm²
LS122 (manuf.)	0.0312 W/m²
ISM400 (first guess)	5.58 W/m²
LS122 (assumption)	0.283 W/m²
ISM400_new	4.71 W/m²
Solarmeter 10.0 (Global Power) (assumption)	7.47 W/m²