CCT:1019 5893K
CRI DC:1017 5,15E-3
CRI R01:1002 92,6 (5893K)
CRI R02:1003 95,0 (5893K)
CRI R03:1004 70,2 (5893K)
CRI R04:1005 90,7 (5893K)
CRI R05:1006 86,3 (5893K)
CRI R06:1007 78,9 (5893K)
CRI R07:1008 85,9 (5893K)
CRI R08:1009 82,9 (5893K)
CRI R09:1010 52,8 (5893K)
CRI R10:1011 65,8 (5893K)
CRI R11:1012 73,9 (5893K)
CRI R12:1013 71,8 (5893K)
CRI R13:1014 89,5 (5893K)
CRI R14:1015 80,4 (5893K)
CRI R15:1016 94,7 (5893K)
CRI Ra:1001 85,3 (5893K)
DC<5.4E-3:1018 true
X:1022 33,25
Y:1023 35,95
Z:1024 33,65
x:1026 0,3233
y:1027 0,3495
z:1028 0,3272
Spectrum 597: SW25 Edit
DeleteMeasurement
| Brand |
Narva NARVA Lichtquellen GmbH + Co. KG http://www.narva-bel.de/ |
|---|---|
| Lamp Product |
BioVital TCL 36W |
| Lamp ID |
SW25 (03/2022) |
| Spectrometer | USB2000+ |
| Ballast | - no ballast or default/unknown ballast - |
| Reflector | |
| Distance | 4 cm |
| Age | 3 hours |
| Originator (measurement) | Sarina Wunderlich |
Database entry created:
Sarina Wunderlich
24/Apr/2022 ; updated:
Sarina Wunderlich
24/Apr/2022
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 ; 0.35 ) | ( 0.48 ; 0.44 ) | ( 0.33 ; 0.33 ; 0.29 ) |
| CCT | 5900 Kelvin | 4000 Kelvin | 4400 Kelvin |
| distance | 0.11 | 0.078 | |
| 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) 9260 µW/cm² = 92.6 W/m² UVC ( 0 nm - 280 nm) 343 µW/cm² = 3.43 W/m² non-terrestrial ( 0 nm - 290 nm) 345 µW/cm² = 3.45 W/m² total2 ( 250 nm - 880 nm) 8930 µW/cm² = 89.3 W/m² UVB (EU) ( 280 nm - 315 nm) 15.1 µW/cm² = 0.151 W/m² UVB (US) ( 280 nm - 320 nm) 19.3 µW/cm² = 0.193 W/m² UVA+B ( 280 nm - 380 nm) 189 µW/cm² = 1.89 W/m² Solar UVB ( 290 nm - 315 nm) 13.2 µW/cm² = 0.132 W/m² UVA D3 regulating ( 315 nm - 335 nm) 25.2 µW/cm² = 0.252 W/m² UVA (EU) ( 315 nm - 380 nm) 174 µW/cm² = 1.74 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 30.6 µW/cm² = 0.306 W/m² UVA (US) ( 320 nm - 380 nm) 170 µW/cm² = 1.7 W/m² UVA1 (variant) ( 335 nm - 380 nm) 149 µW/cm² = 1.49 W/m² UVA1 (medical) ( 340 nm - 400 nm) 188 µW/cm² = 1.88 W/m² vis. UVA ( 350 nm - 380 nm) 115 µW/cm² = 1.15 W/m² VIS Rep3 ( 350 nm - 600 nm) 6660 µW/cm² = 66.6 W/m² VIS Rep4 ( 350 nm - 700 nm) 8640 µW/cm² = 86.4 W/m² purple ( 380 nm - 420 nm) 281 µW/cm² = 2.81 W/m² VIS ( 380 nm - 780 nm) 8700 µW/cm² = 87 W/m² PAR ( 400 nm - 700 nm) 8480 µW/cm² = 84.8 W/m² blue ( 420 nm - 490 nm) 2510 µW/cm² = 25.1 W/m² green ( 490 nm - 575 nm) 2980 µW/cm² = 29.8 W/m² yellow ( 575 nm - 585 nm) 346 µW/cm² = 3.46 W/m² orange ( 585 nm - 650 nm) 2060 µW/cm² = 20.6 W/m² red ( 650 nm - 780 nm) 531 µW/cm² = 5.31 W/m² IRA ( 700 nm - 1400 nm) 201 µW/cm² = 2.01 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 6.39 UV-Index Pyrimidine dimerization of DNA 6.78 µW/cm² Photoceratitis 6.74 µW/cm² Photoconjunctivitis 9.61 µW/cm² DNA Damage 11 Vitamin D3 7.37 µW/cm² Photosynthesis 5720 µW/cm² Luminosity 27900 lx Human L-Cone 4140 µW/cm² Human M-Cone 3520 µW/cm² Human S-Cone 1910 µW/cm² CIE X 3590 µW/cm² CIE Y 3880 µW/cm² CIE Z 3630 µW/cm² PAR 38900000 mol photons Extinction preD3 123 e-3*m²/mol Extinction Tachysterol 291 e-3*m²/mol Exctincition PreD3 109000 m²/mol Extinction Lumisterol 93.5 m²/mol Exctincition Tachysterol 375000 m²/mol Extinction 7DHC 111 m²/mol L-Cone 3430 µW/cm² M-Cone 3390 µW/cm² S-Cone 3050 µW/cm² U-Cone 568 µW/cm² UVR - ICNIRP 2004 10.9 Rel Biol Eff Melatonin Supression 2810 µW/cm² Blue Light Hazard 2100 µW/cm² (75.3 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 7.41 µW/cm² Lumen Reptil 25500 "pseudo-lx" Vitamin D3 Degradation 7.54 µW/cm² Actinic UV 10.9 µW/cm² (3.91 mW/klm) Exctincition Lumisterol 101000 m²/mol Exctincition 7DHC 116000 m²/mol Exctincition Toxisterols 47800 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 36 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 2.85 Leybold UVB 15.4 µW/cm² Leybold UVA 128 µW/cm² Leybold UVC 8.17 µW/cm² DeltaOhm UVB 37.7 µW/cm² DeltaOhm UVC 13.3 µW/cm² Vernier UVB 6.92 µW/cm² Vernier UVA 87 µW/cm² Gröbel UVA 147 µW/cm² Gröbel UVB 12.4 µW/cm² Gröbel UVC 8.59 µW/cm² Solarmeter 6.4 (D3) 8.9 IU/min UVX-31 46.2 µW/cm² IL UVB 0.0142 µW/cm² IL UVA 154 µW/cm² Solarmeter 6.5 (UVI, post 2010) 2.25 UV-Index Solarmeter 6.2 (UVB, post 2010) 17.3 µW/cm² (Solarmeter Ratio = 7.67) Solarmeter AlGaN 6.5 UVI sensor 14 UV Index GenUV 7.1 UV-Index 1.07 UV-Index Solarmeter 10.0 (Global Power) 91 W/m² Solarmeter 4.0 (UVA) 2.48 mW/cm² LS122 -0.00933 W/m² ISM400 61.3 W/m²