Reptile Lamp Database

50.Area (m²):1019 1.1946E-5
Illuminance (lux):1021 1.5077E3
Luminance (candela per m²):1023 1.5077E3
Luminous Flux (lumen):1020 1.8010E-2
Luminous intensity (candela):1022 1.8010E-2
Observer:1017 Photopic
Solid Angle (steradians):1018 1.0
Source:1016 FLMT09760

Device Source:1001 FLMT09760
Integration Begin:1002 400.00
Integration End:1003 700.00
Method:1004 Uses Simpson's Rule for integration.
Moles of Photons:1013 1.6711E-11
PAR uMoles/m²/sec:1015 2.4086E1
PAR uMoles:1014 1.6711E-5
Photons/cm²/sec:1011 1.4505E15
Total Photons:1012 1.0064E13
dBm:1009 -1.2224E1
eV:1010 2.1724E13
uJoule/cm²:1007 2.9136E1
uJoule:1005 3.4806E0
uWatt/cm²:1008 5.0165E2
uWatt:1006 5.9927E1

CCT:1042 3894K
CRI DC:1040 9.36E-3
CRI R01:1025 26.4 (3894K)
CRI R02:1026 13.1 (3894K)
CRI R03:1027 -4.0 (3894K)
CRI R04:1028 -50.2 (3894K)
CRI R05:1029 -51.7 (3894K)
CRI R06:1030 -50.5 (3894K)
CRI R07:1031 -13.0 (3894K)
CRI R08:1032 3.2 (3894K)
CRI R09:1033 81.9 (3894K)
CRI R10:1034 9.1 (3894K)
CRI R11:1035 -46.5 (3894K)
CRI R12:1036 -3.9 (3894K)
CRI R13:1037 -10.8 (3894K)
CRI R14:1038 30.1 (3894K)
CRI R15:1039 12.8 (3894K)
CRI Ra:1024 -15.9 (3894K)
DC<5.4E-3:1041 false

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	( 0.39 ; 0.41 )	( 0.27 ; 0.38 )	( 0.41 ; 0.16 ; 0.22 )
CCT	3900 Kelvin	9100 Kelvin	3700 Kelvin
distance		0.041	0.14
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)	1260 µW/cm² = 12.6 W/m²
UVC ( 0 nm - 280 nm)	0.936 µW/cm² = 0.00936 W/m²
non-terrestrial ( 0 nm - 290 nm)	1.89 µW/cm² = 0.0189 W/m²
total2 ( 250 nm - 880 nm)	1230 µW/cm² = 12.3 W/m²
UVB (EU) ( 280 nm - 315 nm)	16.4 µW/cm² = 0.164 W/m²
UVB (US) ( 280 nm - 320 nm)	17.9 µW/cm² = 0.179 W/m²
UVA+B ( 280 nm - 380 nm)	73.4 µW/cm² = 0.734 W/m²
Solar UVB ( 290 nm - 315 nm)	15.5 µW/cm² = 0.155 W/m²
UVA D3 regulating ( 315 nm - 335 nm)	6.44 µW/cm² = 0.0644 W/m²
UVA (EU) ( 315 nm - 380 nm)	57 µW/cm² = 0.57 W/m²
UVA2 (medical definition) ( 320 nm - 340 nm)	6.78 µW/cm² = 0.0678 W/m²
UVA (US) ( 320 nm - 380 nm)	55.5 µW/cm² = 0.555 W/m²
UVA1 (variant) ( 335 nm - 380 nm)	50.6 µW/cm² = 0.506 W/m²
UVA1 (medical) ( 340 nm - 400 nm)	51.8 µW/cm² = 0.518 W/m²
vis. UVA ( 350 nm - 380 nm)	46.3 µW/cm² = 0.463 W/m²
VIS Rep3 ( 350 nm - 600 nm)	352 µW/cm² = 3.52 W/m²
VIS Rep4 ( 350 nm - 700 nm)	552 µW/cm² = 5.52 W/m²
purple ( 380 nm - 420 nm)	27.3 µW/cm² = 0.273 W/m²
VIS ( 380 nm - 780 nm)	753 µW/cm² = 7.53 W/m²
VIS2 ( 400 nm - 680 nm)	452 µW/cm² = 4.52 W/m²
PAR ( 400 nm - 700 nm)	502 µW/cm² = 5.02 W/m²
tmp ( 400 nm - 1100 nm)	1190 µW/cm² = 11.9 W/m²
blue ( 420 nm - 490 nm)	65.6 µW/cm² = 0.656 W/m²
green ( 490 nm - 575 nm)	134 µW/cm² = 1.34 W/m²
yellow ( 575 nm - 585 nm)	58.8 µW/cm² = 0.588 W/m²
orange ( 585 nm - 650 nm)	105 µW/cm² = 1.05 W/m²
red ( 650 nm - 780 nm)	363 µW/cm² = 3.63 W/m²
IR2 ( 655 nm - 685 nm)	67.3 µW/cm² = 0.673 W/m²
IRA ( 700 nm - 1400 nm)	684 µW/cm² = 6.84 W/m²
IRB ( 1400 nm - 3000 nm)	0 µW/cm² = 0 W/m²

Erythema	2.08 UV-Index
Pyrimidine dimerization of DNA	7.12 µW/cm²
Photoceratitis	3.05 µW/cm²
Photoconjunctivitis	0.84 µW/cm²
DNA Damage	1.4
Vitamin D3	5.75 µW/cm²
Photosynthesis	344 µW/cm²
Luminosity	1560 lx
Human L-Cone	238 µW/cm²
Human M-Cone	185 µW/cm²
Human S-Cone	61.1 µW/cm²
CIE X	213 µW/cm²
CIE Y	220 µW/cm²
CIE Z	110 µW/cm²
PAR PPFD	25.7 µmol/m²/s
Extinction preD3	34.7 e-3*m²/mol
Extinction Tachysterol	119 e-3*m²/mol
Exctincition PreD3	22000 m²/mol
Extinction Lumisterol	20.8 m²/mol
Exctincition Tachysterol	152000 m²/mol
Extinction 7DHC	26 m²/mol
L-Cone	215 µW/cm²
M-Cone	84.6 µW/cm²
S-Cone	117 µW/cm²
U-Cone	111 µW/cm²
UVR - ICNIRP 2004	2.99 Rel Biol Eff
Melatonin Supression	78.5 µW/cm²
Blue Light Hazard	69.9 µW/cm² (44.8 µW/cm² per 1000 lx)
CIE 174:2006 PreVit D3	5.97 µW/cm²
Lumen Reptil	1270 "pseudo-lx"
Vitamin D3 Degradation	4.79 µW/cm²
Actinic UV	2.95 µW/cm² (18.9 mW/klm)
Exctincition Lumisterol	24600 m²/mol
Exctincition 7DHC	29800 m²/mol
Exctincition Toxisterols	2220 m²/mol
UV-Index2	1.51 UV-Index (285-400nm)

Solarmeter 6.2 (UVB, pre 2010)	21 µW/cm²
Solarmeter 6.5 (UV-Index, pre 2010)	1.92
Leybold UVB	14.4 µW/cm²
Leybold UVA	38.3 µW/cm²
Leybold UVC	0.344 µW/cm²
DeltaOhm UVB	19.8 µW/cm²
DeltaOhm UVC	3.77 µW/cm²
Vernier UVB	6.91 µW/cm²
Vernier UVA	29 µW/cm²
Gröbel UVA	50.1 µW/cm²
Gröbel UVB	10.1 µW/cm²
Gröbel UVC	0.558 µW/cm²
Luxmeter	1580 lx
Solarmeter 6.4 (D3)	6.01 IU/min
UVX-31	22.8 µW/cm²
IL UVB	0.0087 µW/cm²
IL UVA	51 µW/cm²
Solarmeter 6.5 (UVI, post 2010)	1.24 UV-Index
Solarmeter 6.2 (UVB, post 2010)	10.7 µW/cm² (Solarmeter Ratio = 8.65)
Solarmeter AlGaN 6.5 UVI sensor	12.4 UV Index
GenUV 7.1 UV-Index	0.652 UV-Index
Solarmeter 10.0 (Global Power) (manuf.)	17.4 W/m²
Solarmeter 4.0 (UVA)	0.701 mW/cm²
LS122 (manuf.)	0.92 W/m²
ISM400 (first guess)	18.9 W/m²
LS122 (assumption)	1.27 W/m²
ISM400_new	19.8 W/m²
Solarmeter 10.0 (Global Power) (assumption)	17.6 W/m²