CCT:1019 2649K
CRI DC:1017 0
CRI R01:1002 99,5 (2649K)
CRI R02:1003 99,7 (2649K)
CRI R03:1004 99,9 (2649K)
CRI R04:1005 99,8 (2649K)
CRI R05:1006 99,9 (2649K)
CRI R06:1007 99,7 (2649K)
CRI R07:1008 99,4 (2649K)
CRI R08:1009 99,2 (2649K)
CRI R09:1010 99,0 (2649K)
CRI R10:1011 99,7 (2649K)
CRI R11:1012 99,7 (2649K)
CRI R12:1013 99,6 (2649K)
CRI R13:1014 99,4 (2649K)
CRI R14:1015 99,9 (2649K)
CRI R15:1016 99,4 (2649K)
CRI Ra:1001 99,6 (2649K)
DC<5.4E-3:1018 true
X:1022 155
Y:1023 137
Z:1024 41
x:1026 0
y:1027 0
z:1028 0
Spectrum 780: SW87 Edit
DeleteMeasurement
| Brand |
ZooCute |
|---|---|
| Lamp Product |
Mini Halogen Spot 50W |
| Lamp ID |
SW87 (03/2024) |
| Spectrometer | USB2000+ |
| Ballast | - no ballast or default/unknown ballast - |
| Reflector | |
| Distance | 10 cm |
| Age | 1 hours |
| Originator (measurement) | Sarina Wunderlich |
Database entry created:
Sarina Wunderlich
7/Mar/2024 ; updated:
Sarina Wunderlich
12/Mar/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.
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 | ( 0.47 ; 0.41 ) | ( 0.64 ; 0.27 ) | ( 0.58 ; 0.27 ; 0.11 ) |
| CCT | 2600 Kelvin | 2600 Kelvin | 2600 Kelvin |
| distance | 0.0037 | 0.0036 | |
| 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) 113000 µW/cm² = 1130 W/m² UVC ( 0 nm - 280 nm) 0 µW/cm² = 0 W/m² non-terrestrial ( 0 nm - 290 nm) 1.3 µW/cm² = 0.013 W/m² total2 ( 250 nm - 880 nm) 110000 µW/cm² = 1100 W/m² UVB (EU) ( 280 nm - 315 nm) 11.9 µW/cm² = 0.119 W/m² UVB (US) ( 280 nm - 320 nm) 16.3 µW/cm² = 0.163 W/m² UVA+B ( 280 nm - 380 nm) 226 µW/cm² = 2.26 W/m² Solar UVB ( 290 nm - 315 nm) 10.6 µW/cm² = 0.106 W/m² UVA D3 regulating ( 315 nm - 335 nm) 24.9 µW/cm² = 0.249 W/m² UVA (EU) ( 315 nm - 380 nm) 214 µW/cm² = 2.14 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 29.7 µW/cm² = 0.297 W/m² UVA (US) ( 320 nm - 380 nm) 210 µW/cm² = 2.1 W/m² UVA1 (variant) ( 335 nm - 380 nm) 189 µW/cm² = 1.89 W/m² UVA1 (medical) ( 340 nm - 400 nm) 385 µW/cm² = 3.85 W/m² vis. UVA ( 350 nm - 380 nm) 154 µW/cm² = 1.54 W/m² VIS Rep3 ( 350 nm - 600 nm) 16700 µW/cm² = 167 W/m² VIS Rep4 ( 350 nm - 700 nm) 41100 µW/cm² = 411 W/m² purple ( 380 nm - 420 nm) 538 µW/cm² = 5.38 W/m² VIS ( 380 nm - 780 nm) 68300 µW/cm² = 683 W/m² VIS2 ( 400 nm - 680 nm) 34900 µW/cm² = 349 W/m² PAR ( 400 nm - 700 nm) 40700 µW/cm² = 407 W/m² tmp ( 400 nm - 1100 nm) 113000 µW/cm² = 1130 W/m² blue ( 420 nm - 490 nm) 2860 µW/cm² = 28.6 W/m² green ( 490 nm - 575 nm) 8970 µW/cm² = 89.7 W/m² yellow ( 575 nm - 585 nm) 1610 µW/cm² = 16.1 W/m² orange ( 585 nm - 650 nm) 13200 µW/cm² = 132 W/m² red ( 650 nm - 780 nm) 41100 µW/cm² = 411 W/m² IRA ( 700 nm - 1400 nm) 72300 µW/cm² = 723 W/m² IR2 ( 720 nm - 1100 nm) 66100 µW/cm² = 661 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 2.09 UV-Index Pyrimidine dimerization of DNA 7.25 µW/cm² Photoceratitis 3.25 µW/cm² Photoconjunctivitis 0.339 µW/cm² DNA Damage 0.875 Vitamin D3 6.12 µW/cm² Photosynthesis 29400 µW/cm² Luminosity 106000 lx Human L-Cone 16700 µW/cm² Human M-Cone 11200 µW/cm² Human S-Cone 2220 µW/cm² CIE X 16600 µW/cm² CIE Y 14700 µW/cm² CIE Z 4330 µW/cm² PAR 207000000 mol photons Extinction preD3 30.7 e-3*m²/mol Extinction Tachysterol 114 e-3*m²/mol Exctincition PreD3 18500 m²/mol Extinction Lumisterol 17.3 m²/mol Exctincition Tachysterol 161000 m²/mol Extinction 7DHC 22.3 m²/mol L-Cone 16000 µW/cm² M-Cone 7530 µW/cm² S-Cone 3180 µW/cm² U-Cone 1000 µW/cm² UVR - ICNIRP 2004 2.67 Rel Biol Eff Melatonin Supression 4080 µW/cm² Blue Light Hazard 2520 µW/cm² (23.8 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 6.48 µW/cm² Lumen Reptil 75600 "pseudo-lx" Vitamin D3 Degradation 4.43 µW/cm² Actinic UV 2.65 µW/cm² (0.251 mW/klm) Exctincition Lumisterol 20700 m²/mol Exctincition 7DHC 26100 m²/mol Exctincition Toxisterols 2170 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 22.5 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 1.94 Leybold UVB 13.9 µW/cm² Leybold UVA 166 µW/cm² Leybold UVC 0.0158 µW/cm² DeltaOhm UVB 34.2 µW/cm² DeltaOhm UVC 4.38 µW/cm² Vernier UVB 6.92 µW/cm² Vernier UVA 97.3 µW/cm² Gröbel UVA 172 µW/cm² Gröbel UVB 9.96 µW/cm² Gröbel UVC 0.0785 µW/cm² Luxmeter 99600 lx Solarmeter 6.4 (D3) 6.05 IU/min UVX-31 42.8 µW/cm² IL UVB 0.0107 µW/cm² IL UVA 199 µW/cm² Solarmeter 6.5 (UVI, post 2010) 1.26 UV-Index Solarmeter 6.2 (UVB, post 2010) 12.6 µW/cm² (Solarmeter Ratio = 9.96) Solarmeter AlGaN 6.5 UVI sensor 10.6 UV Index GenUV 7.1 UV-Index 0.63 UV-Index Solarmeter 10.0 (Global Power) (manuf.) 1710 W/m² Solarmeter 4.0 (UVA) 4.05 mW/cm² LS122 (manuf.) 93 W/m² ISM400 (first guess) 1940 W/m² LS122 (assumption) 129 W/m² ISM400_new 2050 W/m² Solarmeter 10.0 (Global Power) (assumption) 1750 W/m²