EXPOSURE INDICATING DEVICE
First Claim
1. An exposure indicating device disposed in a respirator system, wherein the exposure indicating device comprises a diffractive optical element, wherein the exposure indicating device comprises a material having an index of refraction that changes as a function of exposure to a chemical vapor, wherein the exposure indicating device provides an optical signal that changes in optical property as a function of exposure to the chemical vapor.
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Accused Products
Abstract
An exposure indicating device disposed in a respirator system. The exposure indicating device comprises a diffractive optical element. The exposure indicating device comprises a material having an index of refraction that changes as a function of exposure to a chemical vapor, where the exposure indicating device provides an optical signal that changes in optical property as a function of exposure to the chemical vapor.
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Citations
15 Claims
- 1. An exposure indicating device disposed in a respirator system, wherein the exposure indicating device comprises a diffractive optical element, wherein the exposure indicating device comprises a material having an index of refraction that changes as a function of exposure to a chemical vapor, wherein the exposure indicating device provides an optical signal that changes in optical property as a function of exposure to the chemical vapor.
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11. An exposure indicating device disposed in a respirator system, the respirator system including a face mask having mounted thereon at least one replaceable air purifying respirator cartridge comprising a sorbent material, comprising:
a diffractive optical element formed on a substrate, the substrate mounted to an inner sidewall of the at least one respirator cartridge, wherein the mounting location on the sidewall of the at least one respirator cartridge is substantially transparent, wherein the exposure indicating device comprises a nano-porous material having an index of refraction that changes as a function of exposure to a chemical vapor, wherein the exposure indicating device provides an optical signal that changes in optical property as a function of exposure to the chemical vapor. - View Dependent Claims (12, 13, 14, 15)
Specification