A collection of lamp emission spectra for a household LED bulb with four channels and a remote control allowing color mixing. In addition character vectors useful as indexes for extracting subsets of the data are defined. Pairs of RGB channels are used in mixes. This is by design of the lamp and/or its remote control. The lamp here used is a 7.6 W, 230 V, E-27 LED lamp bulb accompanied by a small wireless remote control from a Swedish supplier. Similar (identical?) lamps are at the moment (early 2018) widely available through eBay and Aliexpress sellers.
Usage
ledsavers.mspct
ledsavers_channels
ledsavers_mixes
ledsavers_RG_mixes
ledsavers_RB_mixes
ledsavers_GB_mixesFormat
ledsavers.mspct is a "source_mspct" object containing
a collection of 16 "source_spct" objects as members. Members are
named.
ledsavers_channels, ledsavers_mixes, ledsavers_RG_mixes,
ledsavers_RB_mixes, ledsavers_GB_mixes are character vectors
containing subsets of names(ledsavers.mspct).
An object of class character of length 4.
An object of class character of length 12.
An object of class character of length 4.
An object of class character of length 4.
An object of class character of length 4.
Details
ledsavers.mspct contains a collection of 16 "source_spct"
objects with spectral emission data for each of the colors obtainable from
the lamp. All colors were measured at maximum power output although the lamp
supports dimming. The lamp was maintained at the same distance from the
input optics so the different spectra are comparable and provided expressed
in calibrated spectral energy irradiance units.
The variables in each member spectrum are as follows:
w.length (nm)
s.e.irrad (\(\mathrm{W\,m^{-2}\,nm^{-1}}\))
Note
Instrument used: Ocean Optics Maya2000 Pro single-monochromator array
spectroradiometer with a Bentham cosine corrected input optics. A complex
set of corrections and calibration procedure used. Raw spectral data
processed with R package MayaCalc. The source_spct objects have
attributes with additional information on the measurement and data processing.
Measurements done by Pedro J. Aphalo. Data acquired using R package 'ooacquire'.
Examples
ledsavers_channels
#> [1] "W" "R" "G" "B"
ledsavers.mspct$W
#> Object: source_spct [689 x 2]
#> Wavelength range 251.16-898.81 nm, step 1.023182e-12-3.79 nm
#> Label: LED lamp: LedSavers 7.5W four channels (WRGB).
#> Measured on 2017-10-02 12:39:51.216242 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#> --
#> # A tibble: 689 × 2
#> w.length s.e.irrad
#> <dbl> <dbl>
#> 1 251. 0
#> 2 252. 0
#> 3 253. 0
#> 4 254. 0
#> 5 255. 0
#> 6 255. 0
#> 7 256. 0
#> 8 256. 0
#> 9 257. 0
#> 10 257. 0
#> # ℹ 679 more rows
ledsavers.mspct[["W"]]
#> Object: source_spct [689 x 2]
#> Wavelength range 251.16-898.81 nm, step 1.023182e-12-3.79 nm
#> Label: LED lamp: LedSavers 7.5W four channels (WRGB).
#> Measured on 2017-10-02 12:39:51.216242 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#> --
#> # A tibble: 689 × 2
#> w.length s.e.irrad
#> <dbl> <dbl>
#> 1 251. 0
#> 2 252. 0
#> 3 253. 0
#> 4 254. 0
#> 5 255. 0
#> 6 255. 0
#> 7 256. 0
#> 8 256. 0
#> 9 257. 0
#> 10 257. 0
#> # ℹ 679 more rows
ledsavers.mspct[ledsavers_channels]
#> Object: source_mspct [4 x 1]
#> --- Member: W ---
#> Object: source_spct [689 x 2]
#> Wavelength range 251.16-898.81 nm, step 1.023182e-12-3.79 nm
#> Label: LED lamp: LedSavers 7.5W four channels (WRGB).
#> Measured on 2017-10-02 12:39:51.216242 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#> --
#> # A tibble: 689 × 2
#> w.length s.e.irrad
#> <dbl> <dbl>
#> 1 251. 0
#> 2 252. 0
#> 3 253. 0
#> 4 254. 0
#> 5 255. 0
#> 6 255. 0
#> 7 256. 0
#> 8 256. 0
#> 9 257. 0
#> 10 257. 0
#> # ℹ 679 more rows
#> --- Member: R ---
#> Object: source_spct [1,157 x 2]
#> Wavelength range 251.16-898.81 nm, step 1.023182e-12-3.67 nm
#> Label: LED lamp: LedSavers 7.5W four channels (WRGB).
#> Measured on 2017-10-02 12:34:07.502351 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#> --
#> # A tibble: 1,157 × 2
#> w.length s.e.irrad
#> <dbl> <dbl>
#> 1 251. 0
#> 2 254. 0
#> 3 255. 0
#> 4 255. 0
#> 5 256. 0
#> 6 256. 0
#> 7 257. 0
#> 8 257. 0
#> 9 258. 0
#> 10 258. 0
#> # ℹ 1,147 more rows
#> --- Member: G ---
#> Object: source_spct [902 x 2]
#> Wavelength range 251.16-898.81 nm, step 1.023182e-12-3.73 nm
#> Label: LED lamp: LedSavers 7.5W four channels (WRGB).
#> Measured on 2017-10-02 12:36:20.09115 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#> --
#> # A tibble: 902 × 2
#> w.length s.e.irrad
#> <dbl> <dbl>
#> 1 251. 0
#> 2 254. 0
#> 3 255. 0
#> 4 255. 0
#> 5 256. 0
#> 6 256. 0
#> 7 257. 0
#> 8 257. 0
#> 9 258. 0
#> 10 258. 0
#> # ℹ 892 more rows
#> --- Member: B ---
#> Object: source_spct [842 x 2]
#> Wavelength range 251.16-898.81 nm, step 1.023182e-12-3.78 nm
#> Label: LED lamp: LedSavers 7.5W four channels (WRGB).
#> Measured on 2017-10-02 12:38:13.245476 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#> --
#> # A tibble: 842 × 2
#> w.length s.e.irrad
#> <dbl> <dbl>
#> 1 251. 0
#> 2 254. 0
#> 3 255. 0
#> 4 255. 0
#> 5 256. 0
#> 6 256. 0
#> 7 257. 0
#> 8 257. 0
#> 9 258. 0
#> 10 258. 0
#> # ℹ 832 more rows
#>
#> --- END ---