Dosimeter for assessing degree of illumination
AssigneeCentre National de la Recherche Scientifique (CNRS)
InventorBertrand Lavedrine
Life of this patent
Estimating the term…
Abstract
A dosimeter for evaluating the degree of illumination by a change in coloration includes a substrate on which is positioned a light-sensitive coloring substance, where the coloring substance is formed of a mixture of several organic dyes dispersed in a polymer matrix and coated onto paper.
Claims12
A dosimeter for evaluating the degree of illumination by a change in coloration comprising a substrate on which is positioned a light-sensitive coloring substance, said light-sensitive coloring substance being formed of a mixture of a plurality of organic dyes dispersed in a polymer matrix and coated onto paper, wherein said dyes are selected from the group consisting of the following numbers in the Color Index:
- CI 42025, 42040, 41051, 42555, 42595, 42780, 44045, 45160, 45165, 45170, 45350, 45380, 45400, 45430, 45440, 46025, 49005, 49010, 52015 and 52040.
A dosimeter for evaluating the degree of illumination by a change in coloration comprising:
- a substrate on which is positioned a light-sensitive coloring substance, the coloring substance being formed of a plurality of several organic dyes dispersed in a polymer matrix and coated onto paper,
- wherein the proportions of the constituents participating in the composition of the dosimeter are within the following limits:
- 0.5% solution of CI 52040 or CI 42780 or CI 52015 or CI 44045 in distilled water . . . 0.1 ml to 1 ml
- 0.5% solution of CI 45440 or CI 45400 or CI 45430 in distilled water . . . 0.1 ml to 1 ml
- 0.5% solution of CI 45350 or CI 46025 or CI 49010 in distilled water . . . 0.1 ml to 1 ml
- oleic or linoleic acid . . . 0 to 3 drops
- binder based on vinyl acetate homopolymers . . . 20 ml.
A dosimeter for evaluating the degree of illumination by a change in coloration comprising:
- a substrate on which is positioned a light-sensitive coloring substance, the coloring substance being formed of a plurality of several organic dyes dispersed in a polymer matrix and coated onto paper,
- wherein the constituents participating in the composition of the dosimeter are as follows:
- 0.5% solution of CI 52040 in distilled water . . . 0.5 ml
- 0.5% solution of CI 45440 in distilled water . . . 5 ml
- oleic acid . . . 2 drops
- binder based on vinyl acetate homopolymers . . . 20 ml.
Dependencies are inferred from the claim text.