US Patent No: 7,657,135
Number of patents in Portfolio can not be more than 2000
Waveguide and optical motion sensor using optical power modulation
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Feb 2, 2010
Issued date -
Nov 19, 2008
filing date -
12/273,736
serial no -
In Force
status
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Abstract
An optical motion sensing device included a sensor frame defining an opening, a sensor pad disposed in the opening, an optical sensing system adapted to detect an amount of movement of the sensor pad in the sensor frame, and an output unit. The optical sensing system includes an optical waveguide, an optical source device, and an optical detector. The optical waveguide is positioned within the sensor frame such that the movement of the sensor pad results in the flexing or compressing of the optical waveguide. The optical source device supplies optical energy to the optical waveguide. The optical detector detects an amount of optical energy exiting the optical waveguide. The output unit is configured to receive a signal indicative of the amount of optical energy exiting the optical waveguide and to generate a measure of the amount of movement of the sensor pad from the received signal.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 2007/0276,261 BILATERAL DEVICE, SYSTEM AND METHOD FOR MONITORING VITAL SIGNS | 20 | 2006 | |
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| 7,463,796 Waveguide and optical motion sensor using optical power modulation | 4 | 2007 | |
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| 5,154,680 Pressure waveform monitor | 16 | 1990 | |
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| 2007/0276,262 BILATERAL DEVICE, SYSTEM AND METHOD FOR MONITORING VITAL SIGNS | 12 | 2006 | |
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| 4,421,979 Microbending of optical fibers for remote force measurement | 47 | 1981 | |
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Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Aug 2, 2013 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 2, 2017 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 2, 2021 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |