What is claimed is:
1. A dynamic optical spectral filter, comprising:
a frame;
a first array of mirrors on a first portion of the frame;
a second array of adjustable mirrors on a second portion of the frame;
an array of variable beam splitters on a middle portion of the frame, between the first array and the second array; and
optical delays disposed in beams paths between the first mirror array and the second mirror array.
2. A dynamic optical spectral filter as claimed in claim 1, wherein the first mirror array, the second mirror array, and the beam splitter array form successive stages, wherein the optical delays of each of the stages is different.
3. A dynamic optical spectral filter as claimed in claim 1, wherein the optical delays for each of stages are an integer multiple of the stage with the smallest delay.
4. A dynamic optical spectral filter as claimed in claim 1, wherein the first mirror array, the second mirror array, and the beam splitter array form successive stages having filter functions with different spectral periods.
5. A dynamic optical spectral filter as claimed in claim 1, wherein adjustable mirrors of the second array comprise separate deflectable mirrors.
6. A dynamic optical spectral filter as claimed in claim 1, wherein deflectable mirrors comprise optical membranes that are deflected out of plane by an electrostatic voltage.
7. A dynamic optical spectral filter as claimed in claim 1, wherein the variable beam splitters each comprise a tunable Fabry-Perot cavity.
8. A dynamic optical spectral filter as claimed in claim 1, wherein the middle portion of the frame comprises optical ports through which optical beams propagate between the first array and the second array.
9. A dynamic optical spectral filter as claimed in claim 1, wherein the first mirror array, the second mirror array, and the beam splitter array form at least three successive stages.
10. A dynamic optical spectral filter, comprising cascaded Mach-Zehnder interferometers, wherein each interferometer includes:
a beam splitter including a tunable Fabry-Perot cavity;
a first mirror;
a second, adjustable mirror.
11. A dynamic optical spectral filter as claimed in claim 10, wherein at least some of the interferometers comprise an optical delay element.
12. A dynamic optical spectral filter as claimed in claim 10, wherein each of the optical delays is different.
13. A dynamic optical spectral filter as claimed in claim 10, wherein the optical delays are integer multiples of each other.
14. A dynamic optical spectral filter as claimed in claim 10, wherein the optical delay of each interferometer is disposed in a beam path between the beam splitter and the first mirror.
15. A dynamic optical spectral filter as claimed in claim 10, further comprising a frame for supporting the first mirror, the adjustable mirror and the beam splitter of each of the interferometers.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An oxygen-delivery wound treatment device comprising closed cells and walls, the device comprising:
a) a formed biocompatible matrix comprising a swellable, cross-linked polyacrylamide, a non-gellable polysaccharide, and a sodium carbonate catalyst;
b) gaseous oxygen, wherein the gaseous oxygen is contained in the closed cells; and
c) dissolved oxygen, wherein the dissolved oxygen is present in moisture in the walls, wherein the gaseous oxygen and the dissolved oxygen are produced when hydrogen peroxide is reacted with the sodium carbonate catalyst.
2. The matrix of claim 1, further comprising at least one active agent.
3. The matrix of claim 1, wherein the matrix comprises a stranded configuration.
4. The matrix of claim 1, further comprising a water loss control agent comprising petrolatum, glycolipids, ceramides, free fatty acids, cholesterol, triglycerides, sterylesters, cholesteryl sulfate, linoleic ethyl ester, or silicone oil.
5. The matrix of claim 1, further comprising a plasticizer comprising glycerol, water, propylene glycol, or butanol.
6. The matrix of claim 1, further comprising a hydration control agent comprising isopropyl alcohol, ethanol, glycerol, butanol, or propylene glycol.
7. The matrix of claim 1, wherein the non-gellable polysaccharide is guar gum.
8. An oxygen delivery wound treatment device comprising closed cells and walls, the device comprising;
a) a formed biocompatible matrix comprising a swellable, cross-linked polyacrylamide, a non-gellable polysaccharide, and a sodium carbonate catalyst;
b) gaseous oxygen, wherein the gaseous oxygen is contained in the closed cells,
c) dissolved oxygen, wherein the dissolved oxygen is present in moisture in the walls, wherein the gaseous oxygen and the dissolved oxygen are produced when hydrogen peroxide is reacted with the sodium carbonate catalyst; and
d) at least one active agent.
9. The matrix of claim 8, wherein the matrix comprises a stranded configuration.
10. The matrix of claim 8, further comprising a water loss control agent comprising petrolatum, glycolipids, ceramides, free fatty acids, cholesterol, triglycerides, sterylesters, cholesteryl sulfate, linoleic ethyl ester, or silicone oil.
11. The matrix of claim 8, further comprising a plasticizer comprising glycerol, water, propylene glycol, or butanol.
12. The matrix of claim 8, further comprising a hydration control agent comprising isopropyl alcohol, ethanol, glycerol, butanol, or propylene glycol.
13. The matrix of claim 8, wherein the non-gellable polysaccharide is guar gum.