The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2001
Filed:
Nov. 23, 1998
Jean-Pierre Fouilloy, Velizy, FR;
Patrick Seugnet, Chatillon, FR;
Thomson-CSF, Paris, FR;
Abstract
An infrared telescope, an apparatus for the harmonizing of its input and output axes including an infrared camera enabling the observation of an infrared scene and delivering a video signal representing the infrared scene, the infrared camera having a sighting axis that constitutes the input axis; a display screen receiving the video signal and displaying the corresponding image in the visible frequency spectrum; a bispectral, visible and infrared collimator, collimating the image displayed on the display screen at infinity, the collimator having an optical axis that constitutes the output axis; an infrared source positioned in a predefined way with respect to the output axis and positioned so that its radiation is collimated at infinity by the collimator; an element the reflection of the radiation coming from the infrared source at output of the collimator towards the infrared camera, the element enabling the formation on the display screen of an image of the infrared source; a device to measure the shift between the predefined position of the infrared source and the image of the infrared source on the display screen; and a device adjusting the telescope to reduce the shift.