Reptile Lamp Database

Area (m²):1019 1.1946E-5
Illuminance (lux):1021 1.2511E3
Luminance (candela per m²):1023 1.2511E3
Luminous Flux (lumen):1020 1.4946E-2
Luminous intensity (candela):1022 1.4946E-2
Observer:1017 Photopic
Solid Angle (steradians):1018 1.0
Source:1016 FLMT09760

Device Source:1001 FLMT09760
Integration Begin:1002 280.00
Integration End:1003 850.00
Method:1004 Uses Simpson's Rule for integration.
Moles of Photons:1013 2.1524E-11
PAR uMoles/m²/sec:1015 1.9540E1
PAR uMoles:1014 1.3735E-5
Photons/cm²/sec:1011 1.8441E15
Total Photons:1012 1.2962E13
dBm:1009 -1.0131E1
eV:1010 3.5634E13
uJoule/cm²:1007 4.7791E1
uJoule:1005 5.7092E0
uWatt/cm²:1008 8.1223E2
uWatt:1006 9.7029E1

CCT:1042 6713K
CRI DC:1040 3.72E-3
CRI R01:1025 20.2 (6713K)
CRI R02:1026 13.1 (6713K)
CRI R03:1027 9.9 (6713K)
CRI R04:1028 -12.2 (6713K)
CRI R05:1029 -10.2 (6713K)
CRI R06:1030 -4.6 (6713K)
CRI R07:1031 10.9 (6713K)
CRI R08:1032 15.2 (6713K)
CRI R09:1033 94.1 (6713K)
CRI R10:1034 1.1 (6713K)
CRI R11:1035 -1.9 (6713K)
CRI R12:1036 39.2 (6713K)
CRI R13:1037 -14.3 (6713K)
CRI R14:1038 41.2 (6713K)
CRI R15:1039 13.3 (6713K)
CRI Ra:1024 5.3 (6713K)
DC<5.4E-3:1041 true

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 )	( 0.26 ; 0.47 )	( 0.26 ; 0.19 ; 0.34 )
CCT	6700 Kelvin	9000 Kelvin	6400 Kelvin
distance		0.13	0.11
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)	804 µW/cm² = 8.04 W/m²
UVC ( 0 nm - 280 nm)	0 µW/cm² = 0 W/m²
non-terrestrial ( 0 nm - 290 nm)	0 µW/cm² = 0 W/m²
total2 ( 250 nm - 880 nm)	804 µW/cm² = 8.04 W/m²
UVB (EU) ( 280 nm - 315 nm)	72.5 µW/cm² = 0.725 W/m²
UVB (US) ( 280 nm - 320 nm)	106 µW/cm² = 1.06 W/m²
UVA+B ( 280 nm - 380 nm)	332 µW/cm² = 3.32 W/m²
Solar UVB ( 290 nm - 315 nm)	72.5 µW/cm² = 0.725 W/m²
UVA D3 regulating ( 315 nm - 335 nm)	128 µW/cm² = 1.28 W/m²
UVA (EU) ( 315 nm - 380 nm)	260 µW/cm² = 2.6 W/m²
UVA2 (medical definition) ( 320 nm - 340 nm)	125 µW/cm² = 1.25 W/m²
UVA (US) ( 320 nm - 380 nm)	226 µW/cm² = 2.26 W/m²
UVA1 (variant) ( 335 nm - 380 nm)	131 µW/cm² = 1.31 W/m²
UVA1 (medical) ( 340 nm - 400 nm)	105 µW/cm² = 1.05 W/m²
vis. UVA ( 350 nm - 380 nm)	55.1 µW/cm² = 0.551 W/m²
VIS Rep3 ( 350 nm - 600 nm)	412 µW/cm² = 4.12 W/m²
VIS Rep4 ( 350 nm - 700 nm)	500 µW/cm² = 5 W/m²
purple ( 380 nm - 420 nm)	53.1 µW/cm² = 0.531 W/m²
VIS ( 380 nm - 780 nm)	466 µW/cm² = 4.66 W/m²
VIS2 ( 400 nm - 680 nm)	429 µW/cm² = 4.29 W/m²
PAR ( 400 nm - 700 nm)	441 µW/cm² = 4.41 W/m²
tmp ( 400 nm - 1100 nm)	468 µW/cm² = 4.68 W/m²
blue ( 420 nm - 490 nm)	120 µW/cm² = 1.2 W/m²
green ( 490 nm - 575 nm)	137 µW/cm² = 1.37 W/m²
yellow ( 575 nm - 585 nm)	32.5 µW/cm² = 0.325 W/m²
orange ( 585 nm - 650 nm)	66.8 µW/cm² = 0.668 W/m²
red ( 650 nm - 780 nm)	57.4 µW/cm² = 0.574 W/m²
IR2 ( 655 nm - 685 nm)	23.3 µW/cm² = 0.233 W/m²
IRA ( 700 nm - 1400 nm)	26.9 µW/cm² = 0.269 W/m²
IRB ( 1400 nm - 3000 nm)	0 µW/cm² = 0 W/m²

Erythema	4.26 UV-Index
Pyrimidine dimerization of DNA	42.6 µW/cm²
Photoceratitis	6.7 µW/cm²
Photoconjunctivitis	0.106 µW/cm²
DNA Damage	0.375
Vitamin D3	18.9 µW/cm²
Photosynthesis	301 µW/cm²
Luminosity	1290 lx
Human L-Cone	191 µW/cm²
Human M-Cone	166 µW/cm²
Human S-Cone	110 µW/cm²
CIE X	168 µW/cm²
CIE Y	181 µW/cm²
CIE Z	197 µW/cm²
PAR PPFD	22.6 µmol/m²/s
Extinction preD3	117 e-3*m²/mol
Extinction Tachysterol	408 e-3*m²/mol
Exctincition PreD3	53500 m²/mol
Extinction Lumisterol	17.2 m²/mol
Exctincition Tachysterol	560000 m²/mol
Extinction 7DHC	14.5 m²/mol
L-Cone	160 µW/cm²
M-Cone	116 µW/cm²
S-Cone	210 µW/cm²
U-Cone	126 µW/cm²
UVR - ICNIRP 2004	3.32 Rel Biol Eff
Melatonin Supression	140 µW/cm²
Blue Light Hazard	126 µW/cm² (97.3 µW/cm² per 1000 lx)
CIE 174:2006 PreVit D3	20.9 µW/cm²
Lumen Reptil	1370 "pseudo-lx"
Vitamin D3 Degradation	20.4 µW/cm²
Actinic UV	3.27 µW/cm² (25.3 mW/klm)
Exctincition Lumisterol	24900 m²/mol
Exctincition 7DHC	19400 m²/mol
Exctincition Toxisterols	8480 m²/mol
UV-Index2	4.26 UV-Index (285-400nm)

Solarmeter 6.2 (UVB, pre 2010)	123 µW/cm²
Solarmeter 6.5 (UV-Index, pre 2010)	5.34
Leybold UVB	91 µW/cm²
Leybold UVA	153 µW/cm²
Leybold UVC	0.0049 µW/cm²
DeltaOhm UVB	184 µW/cm²
DeltaOhm UVC	24.1 µW/cm²
Vernier UVB	34.1 µW/cm²
Vernier UVA	203 µW/cm²
Gröbel UVA	218 µW/cm²
Gröbel UVB	47.3 µW/cm²
Gröbel UVC	-0.0351 µW/cm²
Luxmeter	1350 lx
Solarmeter 6.4 (D3)	16.7 IU/min
UVX-31	197 µW/cm²
IL UVB	0.0501 µW/cm²
IL UVA	176 µW/cm²
Solarmeter 6.5 (UVI, post 2010)	4.43 UV-Index
Solarmeter 6.2 (UVB, post 2010)	79.1 µW/cm² (Solarmeter Ratio = 17.9)
Solarmeter AlGaN 6.5 UVI sensor	59.7 UV Index
GenUV 7.1 UV-Index	3.25 UV-Index
Solarmeter 10.0 (Global Power) (manuf.)	6.11 W/m²
Solarmeter 4.0 (UVA)	2.31 mW/cm²
LS122 (manuf.)	0.00833 W/m²
ISM400 (first guess)	3.48 W/m²
LS122 (assumption)	0.17 W/m²
ISM400_new	2.83 W/m²
Solarmeter 10.0 (Global Power) (assumption)	5.12 W/m²