CCT:1019 6102K
CRI DC:1017 2,98E-3
CRI R01:1002 88,5 (6102K)
CRI R02:1003 91,5 (6102K)
CRI R03:1004 86,9 (6102K)
CRI R04:1005 85,2 (6102K)
CRI R05:1006 84,9 (6102K)
CRI R06:1007 83,5 (6102K)
CRI R07:1008 91,1 (6102K)
CRI R08:1009 94,3 (6102K)
CRI R09:1010 93,9 (6102K)
CRI R10:1011 91,5 (6102K)
CRI R11:1012 90,7 (6102K)
CRI R12:1013 83,4 (6102K)
CRI R13:1014 87,3 (6102K)
CRI R14:1015 90,0 (6102K)
CRI R15:1016 89,2 (6102K)
CRI Ra:1001 88,2 (6102K)
DC<5.4E-3:1018 true
X:1022 20,34
Y:1023 21,74
Z:1024 21,62
x:1026 0,3193
y:1027 0,3413
z:1028 0,3395
Spectrum 688: SW50 Edit
DeleteMeasurement
| Brand |
Viva-Lite http://viva-lite.de/ |
|---|---|
| Lamp Product |
Viva-Lite T5 24W |
| Lamp ID |
SW50 (03/2023) |
| Spectrometer | USB2000+ |
| Ballast | - no ballast or default/unknown ballast - |
| Reflector | |
| Distance | 10 cm |
| Age | 0.5 hours |
| Originator (measurement) | Sarina Wunderlich |
Database entry created:
Sarina Wunderlich
1/Apr/2023 ; updated:
Sarina Wunderlich
1/Apr/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.
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, 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 | ( 0.32 ; 0.34 ) | ( 0.53 ; 0.37 ) | ( 0.3 ; 0.37 ; 0.26 ) |
| CCT | 6000 Kelvin | 3500 Kelvin | 4700 Kelvin |
| distance | 0.053 | 0.094 | |
| 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.
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
Ranges
total ( 0 nm - 0 nm) 5710 µW/cm² = 57.1 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) 5710 µW/cm² = 57.1 W/m² UVB (EU) ( 280 nm - 315 nm) 30.5 µW/cm² = 0.305 W/m² UVB (US) ( 280 nm - 320 nm) 37.8 µW/cm² = 0.378 W/m² UVA+B ( 280 nm - 380 nm) 232 µW/cm² = 2.32 W/m² Solar UVB ( 290 nm - 315 nm) 30.5 µW/cm² = 0.305 W/m² UVA D3 regulating ( 315 nm - 335 nm) 40.1 µW/cm² = 0.401 W/m² UVA (EU) ( 315 nm - 380 nm) 202 µW/cm² = 2.02 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 46 µW/cm² = 0.46 W/m² UVA (US) ( 320 nm - 380 nm) 194 µW/cm² = 1.94 W/m² UVA1 (variant) ( 335 nm - 380 nm) 162 µW/cm² = 1.62 W/m² UVA1 (medical) ( 340 nm - 400 nm) 197 µW/cm² = 1.97 W/m² vis. UVA ( 350 nm - 380 nm) 119 µW/cm² = 1.19 W/m² VIS Rep3 ( 350 nm - 600 nm) 4050 µW/cm² = 40.5 W/m² VIS Rep4 ( 350 nm - 700 nm) 5410 µW/cm² = 54.1 W/m² purple ( 380 nm - 420 nm) 207 µW/cm² = 2.07 W/m² VIS ( 380 nm - 780 nm) 5460 µW/cm² = 54.6 W/m² VIS2 ( 400 nm - 680 nm) 5160 µW/cm² = 51.6 W/m² PAR ( 400 nm - 700 nm) 5240 µW/cm² = 52.4 W/m² tmp ( 400 nm - 1100 nm) 5430 µW/cm² = 54.3 W/m² blue ( 420 nm - 490 nm) 1490 µW/cm² = 14.9 W/m² green ( 490 nm - 575 nm) 1830 µW/cm² = 18.3 W/m² yellow ( 575 nm - 585 nm) 178 µW/cm² = 1.78 W/m² orange ( 585 nm - 650 nm) 1300 µW/cm² = 13 W/m² red ( 650 nm - 780 nm) 450 µW/cm² = 4.5 W/m² IRA ( 700 nm - 1400 nm) 191 µW/cm² = 1.91 W/m² IR2 ( 720 nm - 1100 nm) 99.1 µW/cm² = 0.991 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 1.19 UV-Index Pyrimidine dimerization of DNA 14 µW/cm² Photoceratitis 2.16 µW/cm² Photoconjunctivitis 0.0205 µW/cm² DNA Damage 0.0771 Vitamin D3 5.64 µW/cm² Photosynthesis 3590 µW/cm² Luminosity 16000 lx Human L-Cone 2370 µW/cm² Human M-Cone 2020 µW/cm² Human S-Cone 1110 µW/cm² CIE X 2050 µW/cm² CIE Y 2210 µW/cm² CIE Z 2140 µW/cm² PAR 24200000 mol photons Extinction preD3 38.7 e-3*m²/mol Extinction Tachysterol 133 e-3*m²/mol Exctincition PreD3 17900 m²/mol Extinction Lumisterol 3.88 m²/mol Exctincition Tachysterol 188000 m²/mol Extinction 7DHC 2.35 m²/mol L-Cone 1950 µW/cm² M-Cone 2430 µW/cm² S-Cone 1690 µW/cm² U-Cone 465 µW/cm² UVR - ICNIRP 2004 0.834 Rel Biol Eff Melatonin Supression 1800 µW/cm² Blue Light Hazard 1220 µW/cm² (76.4 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 6.02 µW/cm² Lumen Reptil 15700 "pseudo-lx" Vitamin D3 Degradation 6.94 µW/cm² Actinic UV 0.816 µW/cm² (0.511 mW/klm) Exctincition Lumisterol 6410 m²/mol Exctincition 7DHC 3590 m²/mol Exctincition Toxisterols 3030 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 42.1 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 1.54 Leybold UVB 32.3 µW/cm² Leybold UVA 145 µW/cm² Leybold UVC -3.63E-5 µW/cm² DeltaOhm UVB 65.2 µW/cm² DeltaOhm UVC 7.89 µW/cm² Vernier UVB 10.9 µW/cm² Vernier UVA 115 µW/cm² Gröbel UVA 174 µW/cm² Gröbel UVB 16.6 µW/cm² Gröbel UVC -0.00944 µW/cm² Luxmeter 16100 lx Solarmeter 6.4 (D3) 4.82 IU/min UVX-31 76 µW/cm² IL UVB 0.0176 µW/cm² IL UVA 173 µW/cm² Solarmeter 6.5 (UVI, post 2010) 1.35 UV-Index Solarmeter 6.2 (UVB, post 2010) 26.6 µW/cm² (Solarmeter Ratio = 19.7) Solarmeter AlGaN 6.5 UVI sensor 22 UV Index GenUV 7.1 UV-Index 1.19 UV-Index Solarmeter 10.0 (Global Power) (manuf.) 58.1 W/m² Solarmeter 4.0 (UVA) 2.67 mW/cm² LS122 (manuf.) 0.00311 W/m² ISM400 (first guess) 39.6 W/m² LS122 (assumption) 1.91 W/m² ISM400_new 31.8 W/m² Solarmeter 10.0 (Global Power) (assumption) 55.8 W/m²