Reptile Lamp Database

Spectrum 646: SW49 Edit
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Full Spectrum

Colour Setting 2/6

CRI R01:1002 95,7 (2197K)
CRI R02:1003 98,5 (2197K)
CRI R03:1004 95,0 (2197K)
CRI R04:1005 94,7 (2197K)
CRI R05:1006 97,7 (2197K)
CRI R06:1007 92,4 (2197K)
CRI R07:1008 87,1 (2197K)
CRI R08:1009 78,8 (2197K)
CRI R09:1010 61,1 (2197K)
CRI R10:1011 97,8 (2197K)
CRI R11:1012 97,0 (2197K)
CRI R12:1013 87,6 (2197K)
CRI R13:1014 97,6 (2197K)
CRI R14:1015 98,5 (2197K)
CRI R15:1016 90,4 (2197K)
CRI Ra:1001 92,5 (2197K)
DC<5.4E-3:1018 true

Measurement

Brand Ledvance
Ledvance GmbH with headquarters in Garching, Germany is an international company for lighting products and networked light applications that evolved from the divestment of Osram Licht AG in July 2016.
Lamp Product Sun@Home Classic A40 E27
Lamp ID SW49 (01/2023)
Spectrometer USB2000+
Ballast - no ballast or default/unknown ballast -
Reflector
Distance 5 cm
Age 0 hours
Originator (measurement) Sarina Wunderlich
Database entry created: Sarina Wunderlich 13/Jan/2023 ; updated: Sarina Wunderlich 13/Jan/2023

Colorimetry

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.

Spectrum in the visible wavelength range

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 (id 1).

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, 338451, 511513 ), indicated by crosses, coloured in the appriximate colour perceived by a human.

Human (CIE) 3 cone reptile 4 cone reptile
Cone Excitation
Colour Coordinate ( 0.5 ; 0.4 ) ( 0.69 ; 0.3 ) ( 0.66 ; 0.24 ; 0.1 )
CCT 2200 Kelvin 2400 Kelvin 2200 Kelvin
distance 0.049 0.021
colour space 3-D-graph not implemented yet

Vitamin D3 Analysis

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.

Spectrum in the vitamin D3 active wavelength range

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

Effective Irradiances

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).

The numbers in the following tables can also be used to estimate certain (effective) irradiances from radiomer readings. Example: If the database lists

  • range: UVB (US) = 13.8 µW/cm²
  • radiometer: Solarmeter 6.2 = 19.6 µW/cm²
then any Solarmeter 6.2 reading multiplied with 0.7 (0.7=13.8/19.6) is an estimate of UVB irradiance for this specific lamp. If you do so, always make sure, that the calculated (effective) irradiance is valid. The calculated value is not valid, if the lamp's spectrum is not measured in the relevant range.

Ranges
total ( 0 nm - 0 nm) 2790 µW/cm² = 27.9 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) 2790 µW/cm² = 27.9 W/m²
UVB (EU) ( 280 nm - 315 nm) 0 µW/cm² = 0 W/m²
UVB (US) ( 280 nm - 320 nm) 0 µW/cm² = 0 W/m²
UVA+B ( 280 nm - 380 nm) 1.06 µW/cm² = 0.0106 W/m²
Solar UVB ( 290 nm - 315 nm) 0 µW/cm² = 0 W/m²
UVA D3 regulating ( 315 nm - 335 nm) 0 µW/cm² = 0 W/m²
UVA (EU) ( 315 nm - 380 nm) 1.06 µW/cm² = 0.0106 W/m²
UVA2 (medical definition) ( 320 nm - 340 nm) 0 µW/cm² = 0 W/m²
UVA (US) ( 320 nm - 380 nm) 1.06 µW/cm² = 0.0106 W/m²
UVA1 (variant) ( 335 nm - 380 nm) 1.06 µW/cm² = 0.0106 W/m²
UVA1 (medical) ( 340 nm - 400 nm) 1.65 µW/cm² = 0.0165 W/m²
vis. UVA ( 350 nm - 380 nm) 0.957 µW/cm² = 0.00957 W/m²
VIS Rep3 ( 350 nm - 600 nm) 1030 µW/cm² = 10.3 W/m²
VIS Rep4 ( 350 nm - 700 nm) 2540 µW/cm² = 25.4 W/m²
purple ( 380 nm - 420 nm) 2.77 µW/cm² = 0.0277 W/m²
VIS ( 380 nm - 780 nm) 2770 µW/cm² = 27.7 W/m²
PAR ( 400 nm - 700 nm) 2540 µW/cm² = 25.4 W/m²
blue ( 420 nm - 490 nm) 161 µW/cm² = 1.61 W/m²
green ( 490 nm - 575 nm) 537 µW/cm² = 5.37 W/m²
yellow ( 575 nm - 585 nm) 116 µW/cm² = 1.16 W/m²
orange ( 585 nm - 650 nm) 1120 µW/cm² = 11.2 W/m²
red ( 650 nm - 780 nm) 828 µW/cm² = 8.28 W/m²
IRA ( 700 nm - 1400 nm) 249 µW/cm² = 2.49 W/m²
IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 0.000233 UV-Index
Pyrimidine dimerization of DNA 0.000237 µW/cm²
Photoceratitis 0 µW/cm²
Photoconjunctivitis 0 µW/cm²
DNA Damage 8.57E-7
Vitamin D3 0 µW/cm²
Photosynthesis 1730 µW/cm²
Luminosity 7480 lx
Human L-Cone 1210 µW/cm²
Human M-Cone 741 µW/cm²
Human S-Cone 128 µW/cm²
CIE X 1280 µW/cm²
CIE Y 1030 µW/cm²
CIE Z 257 µW/cm²
PAR 12800000 mol photons
Extinction preD3 0 e-3*m²/mol
Extinction Tachysterol 0 e-3*m²/mol
Exctincition PreD3 1.29 m²/mol
Extinction Lumisterol 0 m²/mol
Exctincition Tachysterol 23.7 m²/mol
Extinction 7DHC 0 m²/mol
L-Cone 1170 µW/cm²
M-Cone 421 µW/cm²
S-Cone 180 µW/cm²
U-Cone 6.33 µW/cm²
UVR - ICNIRP 2004 0.000159 Rel Biol Eff
Melatonin Supression 224 µW/cm²
Blue Light Hazard 138 µW/cm² (18.4 µW/cm² per 1000 lx)
CIE 174:2006 PreVit D3 0 µW/cm²
Lumen Reptil 5030 "pseudo-lx"
Vitamin D3 Degradation 0 µW/cm²
Actinic UV 0.000159 µW/cm² (0.000213 mW/klm)
Exctincition Lumisterol 0 m²/mol
Exctincition 7DHC 0 m²/mol
Exctincition Toxisterols 1.27 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 0.00601 µW/cm²
Solarmeter 6.5 (UV-Index, pre 2010) 8.41E-5
Leybold UVB 0 µW/cm²
Leybold UVA 0.847 µW/cm²
Leybold UVC 0 µW/cm²
DeltaOhm UVB 0.00228 µW/cm²
DeltaOhm UVC 0 µW/cm²
Vernier UVB 0 µW/cm²
Vernier UVA 0.399 µW/cm²
Gröbel UVA 0.885 µW/cm²
Gröbel UVB 0.000315 µW/cm²
Gröbel UVC 0 µW/cm²
Solarmeter 6.4 (D3) 0.000263 IU/min
UVX-31 0.0574 µW/cm²
IL UVB 4.86E-6 µW/cm²
IL UVA 1.03 µW/cm²
Solarmeter 6.5 (UVI, post 2010) 3.57E-5 UV-Index
Solarmeter 6.2 (UVB, post 2010) 0.000352 µW/cm² (Solarmeter Ratio = 9.85)
Solarmeter AlGaN 6.5 UVI sensor 0.000296 UV Index
GenUV 7.1 UV-Index 0.000276 UV-Index
Solarmeter 10.0 (Global Power) 35.4 W/m²
Solarmeter 4.0 (UVA) 0.0172 mW/cm²
LS122 0.0666 W/m²
ISM400 30.4 W/m²