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US 8,618,484 B2Granted
Fluid film indicator
AssigneeMicroFluid AB
InventorLeif Cronvall
Life of this patent
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Abstract
An apparatus for radiometric measurement of thin fluid films includes a housing (1) enclosing means of radiation, a radiation guide, a reflector (4) and one or more detectors (5). The means of radiation is normally an IR radiator (2). The radiation guide is either a radiation tube (3) or a radiation cone (7). The reflector (4) is of the type non-imagining optics. If there is more than one detector (5) normally at least one detector is a reference detector.
Claims11
An apparatus for radiometric measurement of thin fluid films, the apparatus comprising:
- a housing;
- at least one radiator provided in the housing, the at least one radiator configured to emit radiation beams;
- a radiation tube configured to lead the radiation beams from the radiator towards the fluid film to be measured, the radiation tube configured to control the radiation beams to be parallel;
- and
- a non-imaging reflector configured to direct reflected radiation beams towards one or more detectors provided inside the housing;
- wherein the non-imaging reflector is situated between the one or more detectors and the fluid film to be measured;
- wherein the radiation tube extends along an axis of the non-imaging reflector, and into the interior of the non-imaging reflector:
- and
- wherein the radiation tube has an inner surface that is non-reflective.
6 more elements
Dependencies are inferred from the claim text.