Macular pigment measurements
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United States of America Patent
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Oct 28, 2008
Grant Date -
Jan 13, 2005
app pub date -
May 3, 2004
filing date -
May 1, 2003
priority date (Note) -
Expired
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Abstract
Apparatus for use in measuring the density and spatial distribution of macular pigment in an eye comprises a camera (4) for capturing a color image of an eye, at least one filter (36) for filtering light reaching the camera (preferably by filtering the light illuminating the eye). The filter (36) has a transmission spectrum with one peak in the region of light absorbed by the pigment and another peak in a region where no such absorption occurs. The filter increases the sensitivity of the camera to macular pigment while enabling the effect of other pigments to be reduced or eliminated. A method of measuring macular pigment involves obtaining a color image of an eye, the image having two color components each having a spectrum having a respective one of said peaks. Corresponding portions of the components are mathematically combined so as to provide a measurement of macular pigment density and the results of the combination are used to provide an output representative of the contribution of macular pigment to the image.
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Patent Owner(s)
- MILLENNIUM DIET AND NEUTRICEUTICALS LIMITED;MILLENNIUM DIET AND NUTRICEUTICALS LIMITED
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bone, Richard Andrew | Miami, FL | 4 | 32 |
Landrum, John Thomas | Miami, FL | 4 | 32 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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