REMOTE MARKING
First Claim
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1. A remote marking system comprising:
- at least one marker unit;
at least one target region; and
at least one concentrator,wherein said marker unit comprises at least one emitter configured to emit at least one low intensity tracer signal,wherein said target region comprises at least one receiving medium configured to change its state upon reception of a high intensity tracer signal thereby recording the position at which said high intensity tracer signal is received, andwherein said concentrator is configured to transform a low intensity tracer signal to a high intensity tracer signal.
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Abstract
Remote marker systems are disclosed for marking a target using optical markers. Such systems may allow a target to be marked using a remote optical marking device. Also disclosed are photochromic solutions and methods of their preparation.
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Citations
20 Claims
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1. A remote marking system comprising:
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at least one marker unit; at least one target region; and at least one concentrator, wherein said marker unit comprises at least one emitter configured to emit at least one low intensity tracer signal, wherein said target region comprises at least one receiving medium configured to change its state upon reception of a high intensity tracer signal thereby recording the position at which said high intensity tracer signal is received, and wherein said concentrator is configured to transform a low intensity tracer signal to a high intensity tracer signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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- 17. A flow monitor comprising at least one marker unit configured to emit at least one tracer signal towards a tracer fluid, said tracer fluid comprising at least one receiving medium configured to change its state upon reception of a high intensity tracer signal thereby recording the position at which said high intensity tracer signal is received.
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20. A method for monitoring fluid flow comprising:
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providing at least one marker unit configured to emit at least one tracer signal; providing at least one tracer fluid; at least one marker emitting a tracer signal towards said tracer fluid; detecting changes in said tracer fluid indicating material exposed to said tracer signal; and tracking the progress of the exposed material along said fluid flow.
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Specification