Reptile Lamp Database

Spectrum 793: Q2200 Edit
Delete

Full Spectrum

Model "Tungsten Lamp Model 2024 v4.1"

Measurement

Brand other
other
Lamp Product Quentins Halogen Lamp Model
Based on Planck Emission, Spectral Transmission of Glass, Spectral emissivity of tungsten and different temperatures, collected by Quentin Dishman
Lamp ID Q2200 (07/2024)
2200 K filament temperature, Model "Tungsten Lamp Model 2024 v4.1"
Spectrometer -
Ballast - no ballast or default/unknown ballast -
Reflector
Distance 0 cm
Age 0 hours
Originator (measurement) Publication
Database entry created: Sarina Wunderlich 3/Jul/2024 ; updated: Sarina Wunderlich 3/Jul/2024

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 ; 0.42 ) ( 0.71 ; 0.23 ) ( 0.66 ; 0.24 ; 0.078 )
CCT 2200 Kelvin 2200 Kelvin 2200 Kelvin
distance 0.00086 0.00094
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) 100000 µW/cm² = 1000 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) 11100 µW/cm² = 111 W/m²
UVB (EU) ( 280 nm - 315 nm) 0.00425 µW/cm² = 4.25E-5 W/m²
UVB (US) ( 280 nm - 320 nm) 0.0219 µW/cm² = 0.000219 W/m²
UVA+B ( 280 nm - 380 nm) 5.61 µW/cm² = 0.0561 W/m²
Solar UVB ( 290 nm - 315 nm) 0.00425 µW/cm² = 4.25E-5 W/m²
UVA D3 regulating ( 315 nm - 335 nm) 0.226 µW/cm² = 0.00226 W/m²
UVA (EU) ( 315 nm - 380 nm) 5.6 µW/cm² = 0.056 W/m²
UVA2 (medical definition) ( 320 nm - 340 nm) 0.368 µW/cm² = 0.00368 W/m²
UVA (US) ( 320 nm - 380 nm) 5.59 µW/cm² = 0.0559 W/m²
UVA1 (variant) ( 335 nm - 380 nm) 5.38 µW/cm² = 0.0538 W/m²
UVA1 (medical) ( 340 nm - 400 nm) 12.5 µW/cm² = 0.125 W/m²
vis. UVA ( 350 nm - 380 nm) 4.66 µW/cm² = 0.0466 W/m²
VIS Rep3 ( 350 nm - 600 nm) 1060 µW/cm² = 10.6 W/m²
VIS Rep4 ( 350 nm - 700 nm) 3230 µW/cm² = 32.3 W/m²
purple ( 380 nm - 420 nm) 20.4 µW/cm² = 0.204 W/m²
VIS ( 380 nm - 780 nm) 6130 µW/cm² = 61.3 W/m²
VIS2 ( 400 nm - 680 nm) 2660 µW/cm² = 26.6 W/m²
PAR ( 400 nm - 700 nm) 3220 µW/cm² = 32.2 W/m²
tmp ( 400 nm - 1100 nm) 25700 µW/cm² = 257 W/m²
blue ( 420 nm - 490 nm) 136 µW/cm² = 1.36 W/m²
green ( 490 nm - 575 nm) 583 µW/cm² = 5.83 W/m²
yellow ( 575 nm - 585 nm) 117 µW/cm² = 1.17 W/m²
orange ( 585 nm - 650 nm) 1090 µW/cm² = 10.9 W/m²
red ( 650 nm - 780 nm) 4180 µW/cm² = 41.8 W/m²
IRA ( 700 nm - 1400 nm) 44300 µW/cm² = 443 W/m²
IR2 ( 720 nm - 1100 nm) 21900 µW/cm² = 219 W/m²
IRB ( 1400 nm - 3000 nm) 52400 µW/cm² = 524 W/m²
Actionspectra
Erythema 0.00166 UV-Index
Pyrimidine dimerization of DNA 0.00799 µW/cm²
Photoceratitis 0.000123 µW/cm²
Photoconjunctivitis 0 µW/cm²
DNA Damage 7.62E-6
Vitamin D3 0.000149 µW/cm²
Photosynthesis 2360 µW/cm²
Luminosity 7690 lx
Human L-Cone 1240 µW/cm²
Human M-Cone 771 µW/cm²
Human S-Cone 106 µW/cm²
CIE X 1290 µW/cm²
CIE Y 1070 µW/cm²
CIE Z 210 µW/cm²
PAR 16700000 mol photons
Extinction preD3 0.0253 e-3*m²/mol
Extinction Tachysterol 0.107 e-3*m²/mol
Exctincition PreD3 26 m²/mol
Extinction Lumisterol 0 m²/mol
Exctincition Tachysterol 368 m²/mol
Extinction 7DHC 0 m²/mol
L-Cone 1220 µW/cm²
M-Cone 440 µW/cm²
S-Cone 144 µW/cm²
U-Cone 36.1 µW/cm²
UVR - ICNIRP 2004 0.00104 Rel Biol Eff
Melatonin Supression 210 µW/cm²
Blue Light Hazard 121 µW/cm² (15.7 µW/cm² per 1000 lx)
CIE 174:2006 PreVit D3 0.000145 µW/cm²
Lumen Reptil 5230 "pseudo-lx"
Vitamin D3 Degradation 0.00539 µW/cm²
Actinic UV 0.00104 µW/cm² (0.00136 mW/klm)
Exctincition Lumisterol 1.11 m²/mol
Exctincition 7DHC 0.187 m²/mol
Exctincition Toxisterols 10.6 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 0.0871 µW/cm²
Solarmeter 6.5 (UV-Index, pre 2010) 0.000783
Leybold UVB 0.0292 µW/cm²
Leybold UVA 4.49 µW/cm²
Leybold UVC 0 µW/cm²
DeltaOhm UVB 0.272 µW/cm²
DeltaOhm UVC 0.00815 µW/cm²
Vernier UVB 0.00137 µW/cm²
Vernier UVA 2.56 µW/cm²
Gröbel UVA 4.51 µW/cm²
Gröbel UVB 0.0155 µW/cm²
Gröbel UVC -5.99E-6 µW/cm²
Luxmeter 7060 lx
Solarmeter 6.4 (D3) 0.00245 IU/min
UVX-31 0.469 µW/cm²
IL UVB 5.42E-5 µW/cm²
IL UVA 5.54 µW/cm²
Solarmeter 6.5 (UVI, post 2010) 0.000499 UV-Index
Solarmeter 6.2 (UVB, post 2010) 0.0472 µW/cm² (Solarmeter Ratio = 94.7)
Solarmeter AlGaN 6.5 UVI sensor 0.00748 UV Index
GenUV 7.1 UV-Index 0.00229 UV-Index
Solarmeter 10.0 (Global Power) (manuf.) 395 W/m²
Solarmeter 4.0 (UVA) 0.125 mW/cm²
LS122 (manuf.) 863 W/m²
ISM400 (first guess) 497 W/m²
LS122 (assumption) 792 W/m²
ISM400_new 613 W/m²
Solarmeter 10.0 (Global Power) (assumption) 407 W/m²