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WIDE-FIELD OF VIEW (FOV) IMAGING DEVICES WITH ACTIVE FOVEATION CAPABILITY

  • US 20140218468A1
  • Filed: 04/04/2013
  • Published: 08/07/2014
  • Est. Priority Date: 04/05/2012
  • Status: Active Grant
First Claim
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1. A foveated imaging system (100), capable of capturing a wide field of view image and a foveated image, where the foveated image is a controllable region of interest of the wide field of view image, the system comprising:

  • a. an objective lens (110), facing an external scene, configured to receive the incoming light from the external scene and to focus the light upon a beamsplitter;

    b. a beamsplitter (120), configured to split incoming light from an external scene into a wide field of view imaging pa

    1(125) and a foveated imaging path (135);

    c. a wide field of view imaging path (125), the wide field of view imaging path comprising;

    i. a first stop (127), which limits the amount of light received in the wide field of view path from the beamsplitter (120);

    ii. a wide field-of-view imaging lens (130), configured to receive light from the stop (127) and form a wide field view image on a wide field of view imaging sensor;

    iii. a wide field-of-view imaging sensor (140), configured to receive light from the wide field of view imaging lens (130);

    d. a foveated view imaging path (135), the foveated view imaging path comprisingi. a second stop (137), which limits the amount of light received in the foveated imaging path from the beamsplitter (120);

    ii. a scanning mirror (150), capable of being controlled to reflect the light from the beamsplitter (120);

    iv. a foveated imaging lens (160), configured to receive a portion of the light, associated with a region of interest of the external scene, from the scanning mirror (150) and form a foveated image on a foveated imaging sensor; and

    v. a foveated imaging sensor (170), configured to receive light from the foveated imaging lens (160);

    whereupon the incoming light from the external scene passes through the objective lens (110) to the beamsplitter (120), whereupon the beamsplitter (120) divides the light into the two optical paths, a wide field of view imaging path (125) and a foveated imaging path (135), whereupon the light passes through the first stop (127) to the wide field of view imaging lens (130) along the wide field of view imaging path (125), where the lens focuses the wide field of view image upon the wide field of view imaging sensor (140), whereupon the light passes through the second stop (137) to the scanning mirror (150) along the foveated imaging path (135), whereupon the scanning mirror (150) reflects a region of interest toward the foveated imaging lens (160) through the beam splitter (120), whereupon the foveated imaging lens (160) focuses the foveated image upon the foveated imaging sensor (170);

    whereupon the two images are recorded by the sensors, a wide field of view image and a high resolution image of the region of interest within it.

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