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(A) Optical layout of the smartphone fundus video camera. L1 is a 60D ophthalmic lens. L2 is relay lens with 90 mm focal length. L3 is the built-in camera lens. Solid light lines illustrate illumination light rays, and thin dashed lines show imaging light rays. (B) Schematic illustration of the optical fiber and micro mirror based light source. The center of the mirror is ~10 mm from the center of the camera sensor.
