Spectrum #631 TUNG-CMH-TG-001 (Tungsram 70W UVC CMH Ceramic Metal Halide Lamp PAR30) Edit
Delete(1) Raw Measurement
| Lampid | TUNG-CMH-TG-001 |
|---|---|
| Spectrometer | FLAME UV-Vis (E) |
| Originator | Thomas Griffiths |
| Ballast | Lucky Reptile Bright Control Pro 70W |
| Reflector | - no reflector - |
| Distance | 30 |
| Age | 120 |
created by Thomas Griffiths (Tomaskas Ltd.), 08.12.2022; last updated by Thomas Griffiths (Tomaskas Ltd.), 27.11.2023
Description
Area (m²):1019 1.1946E-5
Illuminance (lux):1021 8.1796E4
Luminance (candela per m²):1023 8.1796E4
Luminous Flux (lumen):1020 9.7713E-1
Luminous intensity (candela):1022 9.7713E-1
Observer:1017 Photopic
Solid Angle (steradians):1018 1.0
Source:1016 FLMT09760Device Source:1001 FLMT09760
Integration Begin:1002 280.00
Integration End:1003 780.00
Method:1004 Uses Simpson's Rule for integration.
Moles of Photons:1013 5.7994E-11
PAR uMoles/m²/sec:1015 1.1101E3
PAR uMoles:1014 5.2249E-5
Photons/cm²/sec:1011 7.4202E16
Total Photons:1012 3.4925E13
dBm:1009 4.9293E0
eV:1010 7.6509E13
uJoule/cm²:1007 1.0261E2
uJoule:1005 1.2258E1
uWatt/cm²:1008 2.6044E4
uWatt:1006 3.1112E3CCT:1042 3269K
CRI DC:1040 3.02E-3
CRI R01:1025 86.5 (3269K)
CRI R02:1026 89.3 (3269K)
CRI R03:1027 72.5 (3269K)
CRI R04:1028 88.2 (3269K)
CRI R05:1029 83.9 (3269K)
CRI R06:1030 87.1 (3269K)
CRI R07:1031 78.9 (3269K)
CRI R08:1032 39.7 (3269K)
CRI R09:1033 -60.7 (3269K)
CRI R10:1034 58.4 (3269K)
CRI R11:1035 87.6 (3269K)
CRI R12:1036 61.4 (3269K)
CRI R13:1037 90.5 (3269K)
CRI R14:1038 82.4 (3269K)
CRI R15:1039 67.4 (3269K)
CRI Ra:1024 78.3 (3269K)
(2) Comparison of full spectrum to sunlight
The spectrum is compared to the ASTM spectrum. The measured spectrum is scaled to a lux or UVI value that seems to "make sense" to the database. This can go wrong, depending on the quality and range of the data.
(3) 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 (ASTM spectrum).
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 | ( 0.42 ; 0.41 ) | ( 0.43 ; 0.38 ) | ( 0.47 ; 0.23 ; 0.2 ) |
| CCT | 3300 Kelvin | 4600 Kelvin | 3200 Kelvin |
| distance | 0.046 | 0.077 | |
| colour space | 3-D-graph not implemented yet |
(4) 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 readings of two solarmeters 6.2 (UVB) and 6.5 (UV index) has proven a useful and very simply number to acess the spectral shape in the vitamin-d3-active region.
(5) 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
(5a) Ranges
total ( 0 nm - 0 nm) 30000 µW/cm² = 300 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) 29800 µW/cm² = 298 W/m² UVB (EU) ( 280 nm - 315 nm) 0 µW/cm² = 0 W/m² UVB (US) ( 280 nm - 320 nm) 0 µW/cm² = 0 W/m² UVA+B ( 280 nm - 380 nm) 377 µW/cm² = 3.77 W/m² Solar UVB ( 290 nm - 315 nm) 0 µW/cm² = 0 W/m² UVA D3 regulating ( 315 nm - 335 nm) 0 µW/cm² = 0 W/m² UVA (EU) ( 315 nm - 380 nm) 377 µW/cm² = 3.77 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 0 µW/cm² = 0 W/m² UVA (US) ( 320 nm - 380 nm) 377 µW/cm² = 3.77 W/m² UVA1 (variant) ( 335 nm - 380 nm) 377 µW/cm² = 3.77 W/m² UVA1 (medical) ( 340 nm - 400 nm) 805 µW/cm² = 8.05 W/m² vis. UVA ( 350 nm - 380 nm) 373 µW/cm² = 3.73 W/m² VIS Rep3 ( 350 nm - 600 nm) 16900 µW/cm² = 169 W/m² VIS Rep4 ( 350 nm - 700 nm) 24500 µW/cm² = 245 W/m² purple ( 380 nm - 420 nm) 1500 µW/cm² = 15 W/m² VIS ( 380 nm - 780 nm) 25700 µW/cm² = 257 W/m² VIS2 ( 400 nm - 680 nm) 23100 µW/cm² = 231 W/m² PAR ( 400 nm - 700 nm) 23700 µW/cm² = 237 W/m² tmp ( 400 nm - 1100 nm) 29200 µW/cm² = 292 W/m² blue ( 420 nm - 490 nm) 3270 µW/cm² = 32.7 W/m² green ( 490 nm - 575 nm) 7190 µW/cm² = 71.9 W/m² yellow ( 575 nm - 585 nm) 570 µW/cm² = 5.7 W/m² orange ( 585 nm - 650 nm) 9360 µW/cm² = 93.6 W/m² red ( 650 nm - 780 nm) 3830 µW/cm² = 38.3 W/m² IR2 ( 655 nm - 685 nm) 1600 µW/cm² = 16 W/m² IRA ( 700 nm - 1400 nm) 5440 µW/cm² = 54.4 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
(5b) Actionspectra
Erythema 0.0836 UV-Index Pyrimidine dimerization of DNA 0.0264 µW/cm² Photoceratitis 0 µW/cm² Photoconjunctivitis 0 µW/cm² DNA Damage 0.000217 Vitamin D3 0 µW/cm² Photosynthesis 15100 µW/cm² Luminosity 86300 lx Human L-Cone 13400 µW/cm² Human M-Cone 9720 µW/cm² Human S-Cone 2860 µW/cm² CIE X 12500 µW/cm² CIE Y 12000 µW/cm² CIE Z 5080 µW/cm² PAR PPFD 1140 µmol/m²/s Extinction preD3 0 e-3*m²/mol Extinction Tachysterol 0 e-3*m²/mol Exctincition PreD3 101 m²/mol Extinction Lumisterol 0 m²/mol Exctincition Tachysterol 1880 m²/mol Extinction 7DHC 0 m²/mol L-Cone 11900 µW/cm² M-Cone 5700 µW/cm² S-Cone 5130 µW/cm² U-Cone 2550 µW/cm² UVR - ICNIRP 2004 0.0555 Rel Biol Eff Melatonin Supression 4170 µW/cm² Blue Light Hazard 3510 µW/cm² (40.7 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 0 µW/cm² Lumen Reptil 65500 "pseudo-lx" Vitamin D3 Degradation 0 µW/cm² Actinic UV 0.0555 µW/cm² (0.00643 mW/klm) Exctincition Lumisterol 0 m²/mol Exctincition 7DHC 0 m²/mol Exctincition Toxisterols 105 m²/mol UV-Index2 0.0836 UV-Index (285-400nm)
(5c) Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 3.01 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 0.0323 Leybold UVB 0 µW/cm² Leybold UVA 275 µW/cm² Leybold UVC 0 µW/cm² DeltaOhm UVB 0.121 µW/cm² DeltaOhm UVC 0 µW/cm² Vernier UVB 0 µW/cm² Vernier UVA 114 µW/cm² Gröbel UVA 278 µW/cm² Gröbel UVB -0.0195 µW/cm² Gröbel UVC 0 µW/cm² Luxmeter 86300 lx Solarmeter 6.4 (D3) 0.101 IU/min UVX-31 9.09 µW/cm² IL UVB 0.00116 µW/cm² IL UVA 357 µW/cm² Solarmeter 6.5 (UVI, post 2010) 0.00998 UV-Index Solarmeter 6.2 (UVB, post 2010) 0.0873 µW/cm² (Solarmeter Ratio = 8.74) Solarmeter AlGaN 6.5 UVI sensor 0.111 UV Index GenUV 7.1 UV-Index 0.134 UV-Index Solarmeter 10.0 (Global Power) (manuf.) 359 W/m² Solarmeter 4.0 (UVA) 7.96 mW/cm² LS122 (manuf.) 6.47 W/m² ISM400 (first guess) 311 W/m² LS122 (assumption) 19.1 W/m² ISM400_new 287 W/m² Solarmeter 10.0 (Global Power) (assumption) 359 W/m²
(5d) Summary of my favourites
| UVC (0nm -280nm) [µW/cm] | 0 | 0 % |
| non-terrestrial (0nm -290nm) [µW/cm] | 0 | 0 % |
| UVB (EU) (280nm -315nm) [µW/cm] | 0 | 0 % |
| UVB (US) (280nm -320nm) [µW/cm] | 0 | 0 % |
| Solar UVB (290nm -315nm) [µW/cm] | 0 | 0 % |
| UVA (EU) (315nm -380nm) [µW/cm] | 377 | 1.26 % |
| UVA (US) (320nm -380nm) [µW/cm] | 377 | 1.26 % |
| UVA2 (medical definition) (320nm -340nm) [µW/cm] | 0 | 0 % |
| UVA1 (medical) (340nm -400nm) [µW/cm] | 805 | 2.7 % |
| UVA D3 regulating (315nm -335nm) [µW/cm] | 0 | 0 % |
| vis. UVA (350nm -380nm) [µW/cm] | 373 | 1.25 % |
| VIS (380nm -780nm) [µW/cm] | 25700 | 86.2 % |
| blue (420nm -490nm) [µW/cm] | 3270 | 10.9 % |
| total2 (250nm -880nm) [µW/cm] | 29800 | 100 % |
| UV-Index2 [UV-Index] | 0.0836 | |
| Luminosity [lx] | 86300 | |
| Blue Light Hazard [µW/cm²] | 3510 | 40.7µW/cm/1000lx |
| Solarmeter 6.5 (UVI, post 2010) [UV-Index] | 0.00998 | |
| Solarmeter 6.2 (UVB, post 2010) [µW/cm²] | 0.0873 | |
| Actinic UV [µW/cm²] | 0.0555 | 5.04 at UVI7.6 |
| Vitamin D3 [µW/cm²] | 0 | 0 at UVI7.6 |