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US 6,585,409 B2Granted
Temperature-measurement device with diffractive optics
AssigneeRaytek Corporation
InventorsVolker Schmidt, William Menchine, Hans-Jurgen Rostalski, Frank Wyrowski
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Abstract
A device for temperature measurement uses an optical system to image the heat radiation emanating from a measurement spot on an object of measurement onto a detector. A sighting arrangement is also provided which has a diffractive optical system by which a light intensity distribution is produced which corresponds to the position and size of the measurement spot on the object of measurement.
Claims2
A device for temperature measurement comprising:
- a) a detector for receiving heat radiation emanating from a measurement spot on an object of measurement;
- b) an optical system for imaging the heat radiation, emanating from the measurement spot, onto the detector;
- c) a laser sighting arrangement comprising:
- a laser;
- a diffractive optical element, aligned to be illuminated by said laser, to produce a diffraction pattern in the form of a light intensity distribution which includes a 0th order spot at about the center of the measurement spot and at least one intensive ring displaced from the center.
2 more elements
Dependencies are inferred from the claim text.