Filtering system for electromagnetic radiations
First Claim
1. An electromagnetic radiation filtering system, comprising:
- an electromagnetic radiation source to provide electromagnetic radiation to a target zone;
a filter chamber through which the electromagnetic radiation is to pass before arriving at the target zone;
a filter chamber control system to selectively modify the contents of the filter chamber to modify the wavelengths of radiation that pass through the filter chamber; and
a pump which is connected to the filter chamber and a filter material store, wherein the pump is controllable to either fill the filter chamber with filter material from the filter material store or to empty the contents of the filter chamber into the filter material store.
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Abstract
An electromagnetic filtering system comprising an electromagnetic radiation source, a filter chamber to filter the radiation and a filter chamber control system to selectively modify the contents of the filter chamber in order to modify the wavelengths of the radiation that pass through the filter chamber. There is also provided a method of controlling an electromagnetic filtering system that comprises a controllable filter chamber capable of being controlled so as to selectively be filled with a filter material, the method comprising —determining filtering characteristics to be provided by the filtering system, —determining whether the filter chamber should be filled with the filter material, and —controlling the filter chamber to be filled as determined.
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Citations
20 Claims
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1. An electromagnetic radiation filtering system, comprising:
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an electromagnetic radiation source to provide electromagnetic radiation to a target zone; a filter chamber through which the electromagnetic radiation is to pass before arriving at the target zone; a filter chamber control system to selectively modify the contents of the filter chamber to modify the wavelengths of radiation that pass through the filter chamber; and
a pump which is connected to the filter chamber and a filter material store, wherein the pump is controllable to either fill the filter chamber with filter material from the filter material store or to empty the contents of the filter chamber into the filter material store. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19, 20)
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12. A method of controlling an electromagnetic filtering system comprising a controllable filter chamber controlled to selectively be filled with a filter material, comprising:
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determining filtering characteristics to be provided by the filtering system; determining whether the filter chamber should be filled with the filter material; controlling the filter chamber to be filled as determined; and providing cooling so that the filter material is kept within a predetermined temperature range when in the filter chamber. - View Dependent Claims (13, 14, 16, 17)
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15. An electromagnetic radiation filtering system, comprising:
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an electromagnetic radiation source to provide electromagnetic radiation to a target zone; a filter chamber through which the electromagnetic radiation is to pass before arriving at the target zone; and a filter chamber control system to selectively modify the contents of the filter chamber to modify the wavelengths of radiation that pass through the filter chamber; and
a controller to;receiving input specifying filtering characteristics for the filtering system; determine how to control the filter chamber to provide the specified filter characteristics; and control the filter chamber control system to provide the specified filter characteristics; wherein the filter chamber is fluidly connected, at one extremity of the filter chamber, to a first filter material store, and is fluidly connected, at the opposite extremity of the filter chamber, to a second filter material store, and wherein a piston head is moveably disposed within the filter chamber, the piston head having an airtight seal with an interior of the filter chamber, such that, when the piston head is positioned at one extremity of the filter chamber, the filter chamber is filled with filter material from one of the filter material stores, and, when positioned at the opposite extremity, the filter chamber is filled with filter material from the other one of the filter material stores. - View Dependent Claims (18)
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Specification