US Patent 9201193 Textured fiber optic coupled image intensified camera

A fiber optic bundle couples light from an image intensifier (I2) to an image sensor. The fiber optic bundle includes multiple cores for directing the light from the I2 to the image sensor, and each core has an output surface shaped into a recessed concave surface for focusing the light toward the image sensor. A bond layer is interposed between the output surface of the core and the image sensor. The bond layer is shaped into multiple micro-lenses, each micro-lens configured to conform to the recessed concave surface of each respective core.