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#' @title LEDs with reflectors
#'
#' @description A collection of emission spectra of a light-emitting-diode
#' when combined with different reflectors.
#'
#' @details The \code{"COB_reflectors.mspct"} object contains
#' \code{"source_spct"} objects with spectral irradiance data with the same
#' Optisolis COB LED from Nichia, and different reflectors from the Mirella-G2
#' series from LEDiL . Distance from LED to cosine diffuser was 159 mm.
#' Spectra are not normalized. It needs to be taken into account than even in
#' these cases measurements have not been done in an optical bench, so values
#' of spectral irradiance are subject to errors due to possible
#' misalignment.
#'
#' The COB LED used is the chip-on-board (COB) Optisolis type
#' NFCWL036B-V3-Rfcb0 from Nichia with CRI > 95. Nominal electrical power of
#' 10.3 W at nominal current of 270 mA. Spectra are for the COB over-driven at
#' 350 mA, which is possible with enough cooling, but not recommended.
#'
#' The spectral data are not expressed at constant wavelength intervals. Not
#' only the intervals vary in the raw data from the array spectrometer, but in
#' addition function \code{\link[photobiology]{thin_wl}} has been applied to
#' reduce the storage space needed. In brief the wavelength interval has been
#' increased as much as possible in those regions of the spectrum that lack
#' detailed features (such as linear slopes and wavelength regions with zero
#' light emission).
#'
#' @note Please see the metadata in each spectrum. These metadata are
#' stored as attributes of the individual \code{source_spct} objects and can accessed with functions
#' \code{\link{comment}},
#' \code{\link[photobiology]{getWhatMeasured}},
#' \code{\link[photobiology]{getWhenMeasured}},
#' \code{\link[photobiology]{getHowMeasured}},
#' \code{\link[photobiology]{getInstrDesc}} and
#' \code{\link[photobiology]{getInstrSettings}}.
#' See also the \code{\link{comment}} attribute of the \code{COB_reflectors.mspct}
#' object.
#'
#' @docType data
#' @keywords datasets
#' @format A \code{"source_mspct"} object containing 4
#' \code{"source_spct"} objects.
#'
#' In each of the member spectra, the variables are as follows:
#' \itemize{
#' \item w.length (nm)
#' \item s.e.irrad (W m-2 nm-1)
#' }
#'
#' @references \url{https://www.ledil.com/} \url{https://www.nichia.co.jp/en/}
#'
#' @examples
#' library(photobiology)
#'
#' names(COB_reflectors.mspct)
#'
#' # calculate photon irradiances in umol m-2 s-2 and relative to no reflector
#' irrads <- q_irrad(COB_reflectors.mspct, scale.factor = 1e6)
#' irrads$Q_Total_rel <- irrads$Q_Total / min(irrads$Q_Total)
#' irrads
#'
"COB_reflectors.mspct"
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