초록 ▼

A sensing arrangement for measuring physical parameters or concentration of particles is assembled of a laminar source of luminescent radiation. Fluorescent indicating particles are arranged in an indicator layer adjoining one major side of the laminar light source. The indicator layer adjoins a mea

A sensing arrangement for measuring physical parameters or concentration of particles is assembled of a laminar source of luminescent radiation. Fluorescent indicating particles are arranged in an indicator layer adjoining one major side of the laminar light source. The indicator layer adjoins a measuring space containing the object of measurement whose particles enter the indicator layer by diffusion. Fluorescent indicating particles are arranged in the indicator layer to emit fluorescent light when illuminated by the laminar light source. Photoelectric receiver is adjacent the opposite side of the laminar light source to measure the intensity of the fluorescent radiation. In a modification, luminescent phosphors and fluorescent particles are arranged in a common matrix.

대표청구항 ▼

A physical sensor for measuring physical parameters inclusive of concentration of particles, comprising a laminar formation assembled of a laminar source of a luminescent first radiation, an indicator layer adjoining a major side of said laminar source and being permeable to particles of measurement

A physical sensor for measuring physical parameters inclusive of concentration of particles, comprising a laminar formation assembled of a laminar source of a luminescent first radiation, an indicator layer adjoining a major side of said laminar source and being permeable to particles of measurement, said indicator layer containing molecules emitting a fluorescent second radiation when illuminated by said first radiation, fluorescence quenching of the second radiation depending on concentration of said particles of measurement dispersed in said indicator layer; and a photoelectric receiver optically coupled to said indicator layer to receive and measure said second radiation while rejecting said first radiation.