LENS MODULE WITH ANTI-REFLECTION FILM
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United States of America Patent
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N/A
Issued Date -
Mar 7, 2013
app pub date -
Dec 29, 2011
filing date -
Sep 6, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A lens module includes a lens barrel, a first lens, a second lens, a third lens, and two spacers. The lens barrel includes an object-side end and an image-side end. The first, second, and third lenses are received in the lens barrel and arranged in that order from the object-side to the image-side. The second lens includes an object-side surface facing the object-side end and an image-side surface facing the image side end. An anti-reflection film is coated on the image-side surface of the second lens. The reflectance of the anti-reflection film to light rays having wavelength in a range from about 700 nm to about 740 nm is lower than about 2.25%.
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