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29 August 2008 Day and night security camera
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Abstract
We have designed a fisheye lens with a field of view of 190° and F# of 2.8 The diameter of the circular image plane is designed to fit within the width of the image sensor plane, so that a 190° horizontal field of view can be obtained. It is composed of 8 spherical lens elements and the overall length is 35mm from the first lens surface to the image sensor plane. This fisheye lens operates simultaneously in the visible and the near infrared wavelength regions.
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Milton Laikin, Gyeong-il Kweon, and Young-ho Choi "Day and night security camera", Proc. SPIE 7060, Current Developments in Lens Design and Optical Engineering IX, 706009 (29 August 2008); https://doi.org/10.1117/12.791413
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