Reserve Lamp - 100h use
Spectrum 494: ZM-R1 Edit
DeleteMeasurement
| Brand |
Zoo Med Zoo Med Laboratories, Inc http://www.zoomed.com/ |
|---|---|
| Lamp Product |
Reptisun Desert 10.0 Research project c/o Oonincx et al 2012 |
| Lamp ID |
ZM-R1 (04/2014) Reserve Lamp |
| Spectrometer | USB2000+ (2) |
| Ballast | - no ballast or default/unknown ballast - |
| Reflector | |
| Distance | 10 cm |
| Age | 100 hours |
| Originator (measurement) | Frances Baines |
Database entry created:
Frances Baines
29/Apr/2014 ; updated:
Frances Baines
29/Apr/2014
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 | ( 0.28 ; 0.3 ) | ( 0.4 ; 0.46 ) | ( 0.24 ; 0.3 ; 0.35 ) |
| CCT | 9100 Kelvin | 5000 Kelvin | 5700 Kelvin |
| distance | 0.12 | 0.1 | |
| 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) 1880 µW/cm² = 18.8 W/m² UVC ( 0 nm - 280 nm) 0 µW/cm² = 0 W/m² non-terrestrial ( 0 nm - 290 nm) 0.0411 µW/cm² = 0.000411 W/m² total2 ( 250 nm - 880 nm) 1880 µW/cm² = 18.8 W/m² UVB (EU) ( 280 nm - 315 nm) 55.1 µW/cm² = 0.551 W/m² UVB (US) ( 280 nm - 320 nm) 86.8 µW/cm² = 0.868 W/m² UVA+B ( 280 nm - 380 nm) 360 µW/cm² = 3.6 W/m² Solar UVB ( 290 nm - 315 nm) 55.1 µW/cm² = 0.551 W/m² UVA D3 regulating ( 315 nm - 335 nm) 135 µW/cm² = 1.35 W/m² UVA (EU) ( 315 nm - 380 nm) 304 µW/cm² = 3.04 W/m² UVA2 (medical definition) ( 320 nm - 340 nm) 140 µW/cm² = 1.4 W/m² UVA (US) ( 320 nm - 380 nm) 273 µW/cm² = 2.73 W/m² UVA1 (variant) ( 335 nm - 380 nm) 169 µW/cm² = 1.69 W/m² UVA1 (medical) ( 340 nm - 400 nm) 138 µW/cm² = 1.38 W/m² vis. UVA ( 350 nm - 380 nm) 74.3 µW/cm² = 0.743 W/m² VIS Rep3 ( 350 nm - 600 nm) 1230 µW/cm² = 12.3 W/m² VIS Rep4 ( 350 nm - 700 nm) 1530 µW/cm² = 15.3 W/m² purple ( 380 nm - 420 nm) 87.2 µW/cm² = 0.872 W/m² VIS ( 380 nm - 780 nm) 1510 µW/cm² = 15.1 W/m² PAR ( 400 nm - 700 nm) 1450 µW/cm² = 14.5 W/m² blue ( 420 nm - 490 nm) 485 µW/cm² = 4.85 W/m² green ( 490 nm - 575 nm) 458 µW/cm² = 4.58 W/m² yellow ( 575 nm - 585 nm) 68.3 µW/cm² = 0.683 W/m² orange ( 585 nm - 650 nm) 232 µW/cm² = 2.32 W/m² red ( 650 nm - 780 nm) 184 µW/cm² = 1.84 W/m² IRA ( 700 nm - 1400 nm) 66.9 µW/cm² = 0.669 W/m² IRB ( 1400 nm - 3000 nm) 0 µW/cm² = 0 W/m²
Actionspectra
Erythema 2.82 UV-Index Pyrimidine dimerization of DNA 32.4 µW/cm² Photoceratitis 4.53 µW/cm² Photoconjunctivitis 0.0715 µW/cm² DNA Damage 0.238 Vitamin D3 12.6 µW/cm² Photosynthesis 1030 µW/cm² Luminosity 3910 lx Human L-Cone 571 µW/cm² Human M-Cone 514 µW/cm² Human S-Cone 395 µW/cm² CIE X 508 µW/cm² CIE Y 542 µW/cm² CIE Z 743 µW/cm² PAR 6890000 mol photons Extinction preD3 90.5 e-3*m²/mol Extinction Tachysterol 321 e-3*m²/mol Exctincition PreD3 42500 m²/mol Extinction Lumisterol 10.4 m²/mol Exctincition Tachysterol 460000 m²/mol Extinction 7DHC 8.29 m²/mol L-Cone 465 µW/cm² M-Cone 578 µW/cm² S-Cone 667 µW/cm² U-Cone 192 µW/cm² UVR - ICNIRP 2004 2.04 Rel Biol Eff Melatonin Supression 552 µW/cm² Blue Light Hazard 433 µW/cm² (111 µW/cm² per 1000 lx) CIE 174:2006 PreVit D3 13.9 µW/cm² Lumen Reptil 4340 "pseudo-lx" Vitamin D3 Degradation 16.5 µW/cm² Actinic UV 2.02 µW/cm² (5.17 mW/klm) Exctincition Lumisterol 16200 m²/mol Exctincition 7DHC 11300 m²/mol Exctincition Toxisterols 7540 m²/mol
Broadbandmeters
Solarmeter 6.2 (UVB, pre 2010) 104 µW/cm² Solarmeter 6.5 (UV-Index, pre 2010) 3.62 Leybold UVB 74.7 µW/cm² Leybold UVA 192 µW/cm² Leybold UVC 0.00313 µW/cm² DeltaOhm UVB 176 µW/cm² DeltaOhm UVC 21.3 µW/cm² Vernier UVB 25.1 µW/cm² Vernier UVA 228 µW/cm² Gröbel UVA 257 µW/cm² Gröbel UVB 36.5 µW/cm² Gröbel UVC -0.0243 µW/cm² Solarmeter 6.4 (D3) 11.3 IU/min UVX-31 191 µW/cm² IL UVB 0.043 µW/cm² IL UVA 216 µW/cm² Solarmeter 6.5 (UVI, post 2010) 3.09 UV-Index Solarmeter 6.2 (UVB, post 2010) 69.8 µW/cm² (Solarmeter Ratio = 22.6) Solarmeter AlGaN 6.5 UVI sensor 45.2 UV Index GenUV 7.1 UV-Index 2.56 UV-Index Solarmeter 10.0 (Global Power) 16.8 W/m² Solarmeter 4.0 (UVA) 2.82 mW/cm² LS122 0 W/m² ISM400 10.7 W/m²