Same as http://lamps.licht-im-terrarium.de/spectrummeasurements/view/542 but with all data below 280 cropped because of noise
Spectrum 546: BCLED1 Edit
DeleteMeasurement
| Brand |
Zhong Shan Maineng Lighting Tech Co. Ltd. |
|---|---|
| Lamp Product |
AOLLAN ReptiLamp 3W AOLLAN ReptiLamp “LED Tech Full Spectrum” Model 8508 AC110V 3watt. |
| Lamp ID |
BCLED1 (11/2019) Provided by Matar Al Muhairy, discussion https://www.facebook.com/groups/ReptileLighting/posts/1617377645063492 |
| Spectrometer | USB2000+ (2) |
| Ballast | - no ballast or default/unknown ballast - |
| Reflector | |
| Distance | 30 cm |
| Age | 0 hours |
| Originator (measurement) | Frances Baines |
Database entry created:
Sarina Wunderlich
2/May/2020 ; updated:
Sarina Wunderlich
2/May/2020
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.
WARNING: The measurement range (350 - 800 nm) is not sufficient for this evaluation! Data is only available in the range 287.51 - 750.24 nm. Results are shown anyway but should be ignored by anyone except experts.
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 | ( 0.39 ; 0.34 ) | ( 0.12 ; 0.25 ) | ( 0.17 ; 0.1 ; 0.21 ) |
| CCT | 3500 Kelvin | 0 Kelvin | 100000 Kelvin |
| distance | 0 | 0.12 | |
| 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) 1150 µW/cm² = 11.5 W/m² UVC ( 0 nm - 280 nm) 0 µW/cm² = 0 W/m² non-terrestrial ( 0 nm - 290 nm) 0.186 µW/cm² = 0.00186 W/m² total2 ( 250 nm - 880 nm) 1150 µW/cm² = 11.5 W/m² UVB (EU) ( 280 nm - 315 nm) 130 µW/cm² = 1.3 W/m² UVB (US) ( 280 nm - 320 nm) 146 µW/cm² = 1.46 W/m² UVA+B ( 280 nm - 380 nm) 198 µW/cm² = 1.98 W/m² Solar UVB ( 290 nm - 315 nm) 130 µW/cm² = 1.3 W/m² UVA D3 regulating ( 315 nm - 335 nm) 26.9 µW/cm² = 0.269 W/m² UVA (EU) ( 315 nm - 380 nm) 67.4 µW/cm² = 0.674 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 11.8 µW/cm² = 0.118 W/m² UVA (US) ( 320 nm - 380 nm) 51.7 µW/cm² = 0.517 W/m² UVA1 (variant) ( 335 nm - 380 nm) 40.5 µW/cm² = 0.405 W/m² UVA1 (medical) ( 340 nm - 400 nm) 259 µW/cm² = 2.59 W/m² vis. UVA ( 350 nm - 380 nm) 39.4 µW/cm² = 0.394 W/m² VIS Rep3 ( 350 nm - 600 nm) 813 µW/cm² = 8.13 W/m² VIS Rep4 ( 350 nm - 700 nm) 989 µW/cm² = 9.89 W/m² purple ( 380 nm - 420 nm) 462 µW/cm² = 4.62 W/m² VIS ( 380 nm - 780 nm) 957 µW/cm² = 9.57 W/m² PAR ( 400 nm - 700 nm) 731 µW/cm² = 7.31 W/m² blue ( 420 nm - 490 nm) 93.8 µW/cm² = 0.938 W/m² green ( 490 nm - 575 nm) 143 µW/cm² = 1.43 W/m² yellow ( 575 nm - 585 nm) 27.9 µW/cm² = 0.279 W/m² orange ( 585 nm - 650 nm) 178 µW/cm² = 1.78 W/m² red ( 650 nm - 780 nm) 51.2 µW/cm² = 0.512 W/m² IRA ( 700 nm - 1400 nm) 7.19 µW/cm² = 0.0719 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 13.5 UV-Index Pyrimidine dimerization of DNA 88.4 µW/cm² Photoceratitis 20 µW/cm² Photoconjunctivitis 0.535 µW/cm² DNA Damage 1.87 Vitamin D3 57.6 µW/cm² Photosynthesis 485 µW/cm² Luminosity 1670 lx Human L-Cone 260 µW/cm² Human M-Cone 187 µW/cm² Human S-Cone 119 µW/cm² CIE X 263 µW/cm² CIE Y 230 µW/cm² CIE Z 187 µW/cm² PAR 4130000 mol photons Extinction preD3 228 e-3*m²/mol Extinction Tachysterol 770 e-3*m²/mol Exctincition PreD3 105000 m²/mol Extinction Lumisterol 72.2 m²/mol Exctincition Tachysterol 973000 m²/mol Extinction 7DHC 72 m²/mol L-Cone 234 µW/cm² M-Cone 140 µW/cm² S-Cone 292 µW/cm² U-Cone 731 µW/cm² UVR - ICNIRP 2004 13 Rel Biol Eff Melatonin Supression 213 µW/cm² Blue Light Hazard 167 µW/cm² (100 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 64.9 µW/cm² Lumen Reptil 2890 "pseudo-lx" Vitamin D3 Degradation 33.7 µW/cm² Actinic UV 12.7 µW/cm² (76.2 mW/klm) Exctincition Lumisterol 91100 m²/mol Exctincition 7DHC 90200 m²/mol Exctincition Toxisterols 10800 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 159 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 16.1 Leybold UVB 131 µW/cm² Leybold UVA 45.6 µW/cm² Leybold UVC 0.0335 µW/cm² DeltaOhm UVB 132 µW/cm² DeltaOhm UVC 24.6 µW/cm² Vernier UVB 84.5 µW/cm² Vernier UVA 56.7 µW/cm² Gröbel UVA 60.2 µW/cm² Gröbel UVB 92 µW/cm² Gröbel UVC -0.0155 µW/cm² Solarmeter 6.4 (D3) 50.4 IU/min UVX-31 150 µW/cm² IL UVB 0.0689 µW/cm² IL UVA 55.3 µW/cm² Solarmeter 6.5 (UVI, post 2010) 12.3 UV-Index Solarmeter 6.2 (UVB, post 2010) 81.7 µW/cm² (Solarmeter Ratio = 6.64) Solarmeter AlGaN 6.5 UVI sensor 116 UV Index GenUV 7.1 UV-Index 5.57 UV-Index Solarmeter 10.0 (Global Power) 8.89 W/m² Solarmeter 4.0 (UVA) 2.34 mW/cm² LS122 0 W/m² ISM400 4.89 W/m²