Spectrum 457: SW-HQL1 Edit
DeleteMeasurement
| Brand |
Osram Osram GmbH http://www.osram.de/ |
|---|---|
| Lamp Product |
HQL DeLuxe |
| Lamp ID |
SW-HQL1 (01/2012) borrowed lamp from H.M. |
| Spectrometer | QE65000 |
| Ballast | - no ballast or default/unknown ballast - |
| Reflector | |
| Distance | 100 cm |
| Age | 0 hours |
| Originator (measurement) | Sarina Wunderlich |
Database entry created:
Sarina Wunderlich
14/Jan/2012 ; updated:
Sarina Wunderlich
25/Jul/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 | ( 0.41 ; 0.42 ) | ( 0.28 ; 0.47 ) | ( 0.5 ; 0.14 ; 0.24 ) |
| CCT | 3700 Kelvin | 7700 Kelvin | 2900 Kelvin |
| distance | 0.14 | 0.17 | |
| 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) 810000 µW/cm² = 8100 W/m² UVC ( 0 nm - 280 nm) 174 µW/cm² = 1.74 W/m² non-terrestrial ( 0 nm - 290 nm) 206 µW/cm² = 2.06 W/m² total2 ( 250 nm - 880 nm) 800000 µW/cm² = 8000 W/m² UVB (EU) ( 280 nm - 315 nm) 226 µW/cm² = 2.26 W/m² UVB (US) ( 280 nm - 320 nm) 318 µW/cm² = 3.18 W/m² UVA+B ( 280 nm - 380 nm) 34900 µW/cm² = 349 W/m² Solar UVB ( 290 nm - 315 nm) 195 µW/cm² = 1.95 W/m² UVA D3 regulating ( 315 nm - 335 nm) 901 µW/cm² = 9.01 W/m² UVA (EU) ( 315 nm - 380 nm) 34700 µW/cm² = 347 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 1250 µW/cm² = 12.5 W/m² UVA (US) ( 320 nm - 380 nm) 34600 µW/cm² = 346 W/m² UVA1 (variant) ( 335 nm - 380 nm) 33800 µW/cm² = 338 W/m² UVA1 (medical) ( 340 nm - 400 nm) 40500 µW/cm² = 405 W/m² vis. UVA ( 350 nm - 380 nm) 31700 µW/cm² = 317 W/m² VIS Rep3 ( 350 nm - 600 nm) 549000 µW/cm² = 5490 W/m² VIS Rep4 ( 350 nm - 700 nm) 744000 µW/cm² = 7440 W/m² purple ( 380 nm - 420 nm) 37000 µW/cm² = 370 W/m² VIS ( 380 nm - 780 nm) 748000 µW/cm² = 7480 W/m² VIS2 ( 400 nm - 680 nm) 674000 µW/cm² = 6740 W/m² PAR ( 400 nm - 700 nm) 705000 µW/cm² = 7050 W/m² tmp ( 400 nm - 1100 nm) 767000 µW/cm² = 7670 W/m² blue ( 420 nm - 490 nm) 103000 µW/cm² = 1030 W/m² green ( 490 nm - 575 nm) 234000 µW/cm² = 2340 W/m² yellow ( 575 nm - 585 nm) 116000 µW/cm² = 1160 W/m² orange ( 585 nm - 650 nm) 177000 µW/cm² = 1770 W/m² red ( 650 nm - 780 nm) 80200 µW/cm² = 802 W/m² IRA ( 700 nm - 1400 nm) 62100 µW/cm² = 621 W/m² IR2 ( 720 nm - 1100 nm) 40300 µW/cm² = 403 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 79.7 UV-Index Pyrimidine dimerization of DNA 137 µW/cm² Photoceratitis 93.1 µW/cm² Photoconjunctivitis 106 µW/cm² DNA Damage 147 Vitamin D3 131 µW/cm² Photosynthesis 430000 µW/cm² Luminosity 2900000 lx Human L-Cone 444000 µW/cm² Human M-Cone 340000 µW/cm² Human S-Cone 92700 µW/cm² CIE X 394000 µW/cm² CIE Y 409000 µW/cm² CIE Z 165000 µW/cm² PAR 3450000000 mol photons Extinction preD3 1670 e-3*m²/mol Extinction Tachysterol 4110 e-3*m²/mol Exctincition PreD3 1320000 m²/mol Extinction Lumisterol 1150 m²/mol Exctincition Tachysterol 5780000 m²/mol Extinction 7DHC 1320 m²/mol L-Cone 392000 µW/cm² M-Cone 112000 µW/cm² S-Cone 187000 µW/cm² U-Cone 95300 µW/cm² UVR - ICNIRP 2004 144 Rel Biol Eff Melatonin Supression 108000 µW/cm² Blue Light Hazard 109000 µW/cm² (37.7 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 135 µW/cm² Lumen Reptil 2040000 "pseudo-lx" Vitamin D3 Degradation 127 µW/cm² Actinic UV 144 µW/cm² (0.496 mW/klm) Exctincition Lumisterol 1160000 m²/mol Exctincition 7DHC 1370000 m²/mol Exctincition Toxisterols 636000 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 704 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 52.7 Leybold UVB 289 µW/cm² Leybold UVA 26800 µW/cm² Leybold UVC 77 µW/cm² DeltaOhm UVB 1140 µW/cm² DeltaOhm UVC 208 µW/cm² Vernier UVB 133 µW/cm² Vernier UVA 13900 µW/cm² Gröbel UVA 30800 µW/cm² Gröbel UVB 224 µW/cm² Gröbel UVC 90.1 µW/cm² Luxmeter 2970000 lx Solarmeter 6.4 (D3) 165 IU/min UVX-31 2680 µW/cm² IL UVB 0.402 µW/cm² IL UVA 33100 µW/cm² Solarmeter 6.5 (UVI, post 2010) 33.7 UV-Index Solarmeter 6.2 (UVB, post 2010) 341 µW/cm² (Solarmeter Ratio = 10.1) Solarmeter AlGaN 6.5 UVI sensor 233 UV Index GenUV 7.1 UV-Index 21.6 UV-Index Solarmeter 10.0 (Global Power) (manuf.) 8940 W/m² Solarmeter 4.0 (UVA) 485 mW/cm² LS122 (manuf.) 85.2 W/m² ISM400 (first guess) 6820 W/m² LS122 (assumption) 435 W/m² ISM400_new 5840 W/m² Solarmeter 10.0 (Global Power) (assumption) 8850 W/m²