Radiation intensifying screen

A radiation intensifying screen comprising:

• a first radiation absorbing, luminescent layer formed from a first luminescing material capable of producing spectral emissions of varying wavelengths in a first wavelength range in response to incident radiation;
• a second radiation absorbing, luminescent layer formed from a second luminescing material capable of producing spectral emissions of varying wavelengths in a second wavelength range which is greater than the first wavelength range in response to incident radiation;
• and
• a reflective-transmissive layer disposed between the first and second luminescent layers, wherein the reflective-transmissive layer is adapted to reflect incident spectral emissions of varying wavelengths emanating from the first luminescent layer which are less than a cutoff wavelength of the reflective-transmissive layer, wherein the reflective-transmissive layer is also adapted to allow spectral emissions of varying wavelengths emanating from the second luminescent layer which are greater than the cutoff wavelength of the reflective-transmissive layer to pass therethrough.

A radiation intensifying screen comprising:

• a first radiation absorbing, luminescent layer formed from a first luminescing material capable of producing spectral emissions of varying wavelengths in a first wavelength range in response to incident radiation;
• a second radiation absorbing, luminescent layer formed from a second luminescing material capable of producing spectral emissions of varying wavelengths in a second wavelength range, which is less than the first wavelength range, in response to incident radiation;
• and
• a reflective-transmissive layer disposed between the first and second luminescent layers, wherein the reflective-transmissive layer is adapted to reflect incident spectral emissions of varying wavelengths emanating from the first luminescent layer which are greater than a cutoff wavelength of the reflective-transmissive layer, wherein the reflective-transmissive layer is also adapted to allow spectral emissions of varying wavelengths emanating from the second luminescent layer which are lower than the cutoff wavelength of the reflective-transmissive layer to pass therethrough.