This paper presents a novel objective lens design for an endoscope of extremely small diameter in a Chip-on-the-Tip (COT) configuration. The design provides 8mm DOF at a close distance, between 2mm and 10mm, from the object with 140 degree FOV, while allowing to be compactly packaged into a 1 mm diameter and 3 mm length.

© 2015 Optical Society of America

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