Multiple field of view sensor lens assembly

Details Multiple field of view sensor lens assembly Multiple field of view sensor lens assembly

G - Physics

02

B

G02B 7/02 (2006.01) G02B 15/04 (2006.01) G02B 23/12 (2006.01) G02B 23/16 (2006.01) H04N 5/33 (2006.01)

Patent

CA 2073382

A multiple field of view sensor lens assembly suitable for inclusion in an infrared imaging system. The lens assembly includes a rotatable telescope 10 for providing first and second fields of view for the sensor, the first field of view being along a first axis thereof L and the second field of view being along a separate second axis T. A servo mechanism 30 is included for rotating the telescope 10 from a first orientation at which the first axis is aligned with the optical axis to a second orientation at which the second axis is aligned with the optical axis. In a preferred embodiment the inventive lens assembly is disposed to provide fields of view in opposing directions along the first axis L, and a third field along the second axis T.

L'invention est un objectif de capteur à champs de vision multiples pour système d'imagerie infrarouge. Cet objectif porte un télescope tournant 10 servant à produire un premier et un deuxième champ de vision pour le capteur, le premier de ces champs de vision étant sur un premier axe L du capteur et le deuxième, sur un second axe T. Un servomécanisme 30 est incorporé à l'objectif pour réorienter le télescope 10 d'une première orientation où le premier axe est aligné avec l'axe optique, à une seconde orientation où le deuxième axe est aligné avec l'axe optique. Dans la concrétisation privilégiée de l'invention, l'objectif est monté de façon à donner des champs de vision dans les sens opposés du premier axe L, et un troisième champ de vision sur le second axe T.

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