Measuring and testing – Fluid pressure gauge – Photoelectric
Reexamination Certificate
2006-09-12
2006-09-12
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid pressure gauge
Photoelectric
C250S231190
Reexamination Certificate
active
07104135
ABSTRACT:
The optical pressure-sensing system essentially comprises a light source, a resonant cavity and a detector, where the light source is used for generating a light with a predetermined wavelength, the resonant cavity includes a stationary wall with a stationary plane and a movable wall with a movable plane, and the detector is used for detecting a resonated light generated in the resonant cavity by resonating the light between the stationary plane and the movable plane. According to the present invention, a first light is generated and resonated in a resonant cavity to amplify the interaction between the first light and gas molecules in the resonated cavity. The interaction is measured, and the pressure in the resonant cavity is calculated based on the interaction. The interaction between the light and gas molecules in the resonant cavity may change the polarization angle or the phase of the light.
REFERENCES:
patent: 4270091 (1981-05-01), Mann
patent: 4933545 (1990-06-01), Saaski et al.
patent: 5908988 (1999-06-01), Lee et al.
Hecht, Eugene; Optics; 1998; Addison-Wesley; Third Edition; pp. 362-363.
Industrial Technology Research Institute
Lefkowitz Edward
Moorman Lori
Volentine Francos & Whitt PLLC
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