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Spectral transmittance for filter stacks

Source: R/stacked-filters.r
stacked_filters.Rd

Indexing vector for selecting transmittance spectra for stacks of two or more filters.

Usage

stacked_filters

Format

A vector of character strings.

Details

A character vector of names of spectra in object filter.mspct measured by P. J. Aphalo from stacks of filters. Unless differently indicated in the spectrum metadata, the filters in the stack were separated by an air gap. Because of multiple reflections at the air-glass interfaces the measured spectra differ slightly from the result of a simple convolution between the spectra corresponding to the individual filters.

See also

filters.mspct

Examples

stacked_filters
#> [1] "Tangsinuo_ZWB1_QB21AR_stack_2mm2mm_52mm"
#> [2] "Tangsinuo_ZWB1_TSN575_stack_2mm2mm_52mm"
#> [3] "Tangsinuo_ZWB2_QB21AR_stack_2mm2mm_52mm"
#> [4] "Tangsinuo_ZWB2_TSN575_stack_2mm2mm_52mm"

filters.mspct[stacked_filters]
#> Object: filter_mspct [4 x 1]
#> --- Member: Tangsinuo_ZWB1_QB21AR_stack_2mm2mm_52mm ---
#> Object: filter_spct [368 x 2]
#> Wavelength range 200-1020 nm, step 1-4 nm 
#> Label: Filter stack (air gap): Tangsinuo ZWB1 QB21AR stack 
#> Rfr (/1): NA, thickness (mm): 2.00 + 2.00, attenuation mode: stack.
#> Variables:
#>  w.length: Wavelength [nm]
#>  Tfr: Total spectral transmittance [/1] 
#> --
#> # A tibble: 368 × 2
#>    w.length    Tfr
#>       <int>  <dbl>
#>  1      200 0.0001
#>  2      204 0.0001
#>  3      208 0.0001
#>  4      210 0.0001
#>  5      211 0.0001
#>  6      212 0.0001
#>  7      213 0.0001
#>  8      214 0.0001
#>  9      215 0.0001
#> 10      216 0.0001
#> # ℹ 358 more rows
#> --- Member: Tangsinuo_ZWB1_TSN575_stack_2mm2mm_52mm ---
#> Object: filter_spct [630 x 2]
#> Wavelength range 200-1020 nm, step 1-4 nm 
#> Label: Filter stack (air gap): Tangsinuo ZWB1 TSN575 stack 
#> Rfr (/1): NA, thickness (mm): 2.00 + 2.00, attenuation mode: stack.
#> Variables:
#>  w.length: Wavelength [nm]
#>  Tfr: Total spectral transmittance [/1] 
#> --
#> # A tibble: 630 × 2
#>    w.length    Tfr
#>       <int>  <dbl>
#>  1      200 0.0001
#>  2      204 0.0001
#>  3      208 0.0001
#>  4      210 0.0001
#>  5      211 0.0001
#>  6      212 0.0001
#>  7      213 0.0001
#>  8      214 0.0001
#>  9      215 0.0001
#> 10      216 0.0001
#> # ℹ 620 more rows
#> --- Member: Tangsinuo_ZWB2_QB21AR_stack_2mm2mm_52mm ---
#> Object: filter_spct [368 x 2]
#> Wavelength range 200-1020 nm, step 1-4 nm 
#> Label: Filter stack (air gap): Tangsinuo ZWB2 QB21AR stack 
#> Rfr (/1): NA, thickness (mm): 2.00 + 2.00, attenuation mode: stack.
#> Variables:
#>  w.length: Wavelength [nm]
#>  Tfr: Total spectral transmittance [/1] 
#> --
#> # A tibble: 368 × 2
#>    w.length    Tfr
#>       <int>  <dbl>
#>  1      200 0.0001
#>  2      204 0.0001
#>  3      208 0.0001
#>  4      210 0.0001
#>  5      211 0.0001
#>  6      212 0.0001
#>  7      213 0.0001
#>  8      214 0.0001
#>  9      215 0.0001
#> 10      216 0.0001
#> # ℹ 358 more rows
#> --- Member: Tangsinuo_ZWB2_TSN575_stack_2mm2mm_52mm ---
#> Object: filter_spct [638 x 2]
#> Wavelength range 200-1020 nm, step 1-4 nm 
#> Label: Filter stack (air gap): Tangsinuo ZWB2 TSN575 stack 
#> Rfr (/1): NA, thickness (mm): 2.00 + 2.00, attenuation mode: stack.
#> Variables:
#>  w.length: Wavelength [nm]
#>  Tfr: Total spectral transmittance [/1] 
#> --
#> # A tibble: 638 × 2
#>    w.length    Tfr
#>       <int>  <dbl>
#>  1      200 0.0001
#>  2      204 0.0001
#>  3      208 0.0001
#>  4      210 0.0001
#>  5      211 0.0001
#>  6      212 0.0001
#>  7      213 0.0001
#>  8      214 0.0001
#>  9      215 0.0001
#> 10      216 0.0001
#> # ℹ 628 more rows
#> 
#> --- END ---