Optics: measuring and testing – Refraction testing
Reexamination Certificate
2011-08-16
2011-08-16
Punnoose, Roy (Department: 2886)
Optics: measuring and testing
Refraction testing
Reexamination Certificate
active
07999931
ABSTRACT:
An optical indicator (130) for identification of a changed state of a fluid with respect to a reference state of the same fluid, or for monitoring or checking or authenticating a fluid. The fluid has an optical parameter that changes with the change of the state of the fluid. The optical indicator (130) may be attached to or integral with a container or packaging (132) for the fluid. The indicator (130) includes a cavity configured to be filed with the fluid such that the fluid filled cavity forms a variable optical element having an optical performance that varies depending on the changeable fluid's optical parameter. The fluid filled cavity coupled to other optical components of the indicator provides an image that may be compared to a reference image to detect a change of at least one optical property of the fluid as compared to the reference fluid. The comparison may be performed visually or by a suitable detector. The comparison may include automated processing of the detector's output signal(s).
REFERENCES:
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patent: 2008/0309937 (2008-12-01), Gan
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patent: WO 2005/050179 (2005-06-01), None
IBM Technical Disclosure Bulletin, “Automated Detector for Liquid Chromotography”, Sep. 1976, vol. 19, No. 4.
International Search Report for International Application No. PCT/IL05/00409 mailed Mar. 9, 2006.
Pearl Cohen Zedek Latzer LLP
Punnoose Roy
Virtue Sense Ltd.
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