Bifocal lens and imaging device including same
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United States of America Patent
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Jul 23, 2019
Grant Date -
Dec 29, 2016
app pub date -
Jan 14, 2015
filing date -
Jan 14, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed are a bifocal lens having two focal distances to enable near image capturing and far image capturing and capable of being manufactured to have a thin profile, and an imaging device including same. A bifocal lens according to disclosed embodiments may include: a refractive optical system having at least one refractive lens element and having a first focal distance; and a reflective optical system having multiple reflective surfaces and having a second focal distance that is different from the first focal distance. Because the refractive optical system and the reflective optical system have mutually different focal distances, the bifocal lens according to an embodiment may be capable of both near image capturing and far image capturing.
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