| 主权项 |
1. Arrangement for detecting first light and second light, first light comprising one or more wavelengths of a first wavelength range only, and second light comprising one or more wavelengths of a second wavelength range only, said first and second wavelength ranges not overlapping,
said arrangement comprising a first effective detector area and a second effective detector area, a first layer, a second layer, and at least a first blocking area and a second blocking area, said first layer forming a joint interface with said second layer, said joint interface being referred to as reflection interface, said first layer featuring a blocking face being different from said reflection interface, said blocking face facing said first and second blocking areas, said second layer featuring a detection face being different from said reflection interface, said detection face facing said first and second effective detector areas, said first blocking area substantially being made of a first material and said first material being substantially attenuative or substantially reflective for light of said first wavelength range and for light of said second wavelength range, a refractive index of said second layer at said reflection interface being smaller than a refractive index of said first layer at said reflection interface for any wavelength λ1, λ1 designating a wavelength comprised in said first wavelength range, and for any wavelength λ2, λ2 designating a wavelength comprised in said second wavelength range, θTR designating an angle of total reflection for a respective wavelength with θTR designating an angle of incidence relative to a reference plane, said first blocking area being structured for substantially inhibiting a propagation of light of any wavelength λ1 and of any wavelength λ2 from the blocking face through said first layer and said second layer to said first effective detector area for any angle of incidence θ relative to said reference plane for which applies 0°≦θ≦θ1max, with θ1max designating an angle of incidence relative to said reference plane for which applies θ1max<θTR for any wavelength λ1 and for any wavelength λ2; said second blocking area being structured for substantially inhibiting a propagation of light of any wavelength λ1 from the blocking face through said first layer and said second layer to said second effective detector area for all angles of incidence θ relative to said reference plane for which applies 0°≦θ≦θ2max, with θ2max designating an angle of incidence relative to said reference plane for which applies θ2max≧θTR for the respective wavelength λ1, said second blocking area comprising a window area being made of a second material, said second material being substantially attenuative or substantially reflective for said first light and being substantially transmissive for said second light, said window area being structured for substantially allowing a propagation of light of any wavelength λ2 from the blocking face through said first layer and said second layer to said second effective detector area for any angle of incidence θ relative to said reference plane for which applies 0°≦θ≦θ2min for the respective wavelength λ2, θ2min designating an angle of incidence relative to said reference plane for which applies θ2min>0°, said second blocking area being structured for substantially inhibiting a propagation of light of any wavelength λ2 from the blocking face through said first layer and said second layer to said second effective detector area for all angles of incidence θ relative to said reference plane for which applies θ2min≦θ≦θ2max, with θ2max designating an angle of incidence relative to said reference plane with θ2max>θTR for the respective wavelength λ2, and with θ2min≦θ2max for the respective wavelength λ2. |
