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COMPACT LIGHT SENSORS WITH SYMMETRICAL LIGHTING

  • US 20160249810A1
  • Filed: 05/10/2016
  • Published: 09/01/2016
  • Est. Priority Date: 03/21/2014
  • Status: Active Grant
First Claim
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1. An imaging device, comprising:

  • A) a housing having an exterior and an interior;

    B) at least one objective lens attached to or within the housing,C) a plurality of light source sets radially disposed on the exterior of the housing about the at least one objective lens, whereineach light source set in the plurality of light source sets comprises a first light source that emits light that is substantially limited to a first spectral range and a second light source that emits light that is substantially limited to a second spectral range,each light source in each light source set in the plurality of light source sets is offset from the at least one objective lens and positioned so that light from each respective light source is backscattered by a tissue of a subject and then passed through the at least one objective lens, andeach light in each light source set has a different radial position with respect to the at least one objective lens;

    D) a plurality of pixel array photo-sensors within the housing;

    E) an optical assembly within the interior of the housing, the optical assembly in optical communication with the at least one objective lens, the optical assembly characterized by further directing light received by at least one objective lens from the tissue of the subject to at least one pixel array photo-sensor in the plurality of pixel array photo-sensors;

    F) a plurality of multi-bandpass filters, wherein each respective multi-bandpass filter in the plurality of multi-bandpass filters covers a corresponding pixel array photo-sensor in the plurality of pixel array photo-sensors thereby selectively allowing a different corresponding spectral band of light, from the light received by the at least one object lens and redirected by the optical assembly, to pass through to the corresponding pixel array photo-sensor; and

    G) a controller, wherein at least one program is non-transiently stored in the controller and executable by the controller, the at least one program causing the controller to perform the method of;

    i) firing a first light in each light source set in the plurality of light source sets for a first period of time while not firing the second light source in each light source set,ii) collecting a first set of images during the first period of time using at least a first subset of the plurality of pixel array photo-sensors,iii) firing a second light in each light source set in the plurality of light source sets for a second period of time while not firing the first light source in each light source set, andiv) collecting a second set of images during the second period of time using at least a second subset of the plurality of pixel array photo-sensors.

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