Spectral 'transmittance' data for frequently used filters and 
    similar materials. Plastic sheets and films; photography filters; 
    theatrical gels; machine-vision filters; various types of window glass;
    optical glass and some laboratory plastics and glassware. Spectral 
    reflectance data for frequently encountered materials. Part of the
    'r4photobiology' suite, Aphalo P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.

Functions for reading, and in some cases writing, foreign files 
    containing spectral data from spectrometers and their associated software, 
    output from daylight simulation models in common use, and some spectral 
    data repositories. As well as functions for exchange of spectral data with 
    other R packages. Part of the 'r4photobiology' suite, 
    Aphalo P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.

Spectral emission data for some frequently used lamps including 
    bulbs and flashlights based on led emitting diodes (LEDs) but excluding
    LEDs available as electronic components. Original spectral irradiance data 
    for incandescent-, LED- and discharge lamps are included. They are 
    complemented by data on the effect of temperature on the emission by 
    fluorescent tubes. Part of the 'r4photobiology' suite, Aphalo P. J. (2015) 
    <doi:10.19232/uv4pb.2015.1.14>.

Spectral emission data for some frequently used light emitting
    diodes available as electronic components. Part of the 'r4photobiology' 
    suite, Aphalo P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.

Provides functions for quantifying visible (VIS) and ultraviolet
    (UV) radiation in relation to the photoreceptors Phytochromes,
    Cryptochromes, and UVR8 which are present in plants. It also includes data 
    sets on the optical properties of plants. Part of the 'r4photobiology' 
    suite, Aphalo P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.

Spectral response data for broadband ultraviolet and visible
    radiation sensors. Angular response data for broadband ultraviolet and visible
    radiation sensors and diffusers used as entrance optics. Data obtained from
    multiple sources were used: author-supplied data from scientific research 
    papers, sensor-manufacturer supplied data, and published sensor 
    specifications. Part of the 'r4photobiology' suite Aphalo P. J. (2015) 
    <doi:10.19232/uv4pb.2015.1.14>.