Compact stereo endoscopic camera using microprism arrays

This work reports a microprism array (MPA) based compact stereo endoscopic camera with a single image sensor. The MPAs were monolithically fabricated by using two-step photolithography and geometry-guided resist reflow to form an appropriate prism angle for stereo image pair formation. The fabricate...

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Bibliographic Details
Published in:Optics letters 2016-03, Vol.41 (6), p.1285-1288
Main Authors: Yang, Sung-Pyo, Kim, Jae-Jun, Jang, Kyung-Won, Song, Weon-Kook, Jeong, Ki-Hun
Format: Article
Language:English
Subjects:
Angles (geometry)
Arrays
Cameras
Endoscopes
Endoscopy - instrumentation
Imaging
Optical Devices
Resists
Sensor arrays
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Summary:This work reports a microprism array (MPA) based compact stereo endoscopic camera with a single image sensor. The MPAs were monolithically fabricated by using two-step photolithography and geometry-guided resist reflow to form an appropriate prism angle for stereo image pair formation. The fabricated MPAs were transferred onto a glass substrate with a UV curable resin replica by using polydimethylsiloxane (PDMS) replica molding and then successfully integrated in front of a single camera module. The stereo endoscopic camera with MPA splits an image into two stereo images and successfully demonstrates the binocular disparities between the stereo image pairs for objects with different distances. This stereo endoscopic camera can serve as a compact and 3D imaging platform for medical, industrial, or military uses.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.001285