Zoom lens design using liquid lens for laparoscope.

Seungwan Lee, Minseog Choi, Eunsung Lee, Kyu-Dong Jung, Jong-Hyeon Chang, Woonbae Kim

Micro Systems Lab., Samsung Advanced Institute of Technology, Nongseo-dong, Giheung-gu, Yongin-si, Gyeonggido 446-712, South Korea. lswan@samsung.com

Optics express 2013 Jan 28

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Traditional laparoscopic optical systems consisting of about 30 lenses have low optical magnification. To magnify tissue during surgical operations, one must change from one laparoscope to another or use a magnifying adapter between the laparoscope and the sensor. Our work focuses on how to change the sag of a liquid lens while zooming from 1 × zoom, to 2 × , and 4 × in an optical design for a laparoscope. The design includes several lenses and two liquid lenses with variable focal lengths. A pair of laparoscopes for 3-D stereoscopy is placed within a tube 11 mm in diameter. The predicted depth resolution of tissue is 0.5 mm without interpolation at 4 × zoom.

Citation

Seungwan Lee, Minseog Choi, Eunsung Lee, Kyu-Dong Jung, Jong-Hyeon Chang, Woonbae Kim. Zoom lens design using liquid lens for laparoscope. Optics express. 2013 Jan 28;21(2):1751-61