Optical element with infrared absorbing layer and lens module including same

摘要

An optical element includes a transparent substrate and an infrared absorbing layer on an object-side surface of the transparent substrate. The infrared absorbing layer is a thermo sensitive ink printed or deposited on the transparent substrate. The thermo sensitive ink is cured to blue color.

主权项

1. An optical element, comprising:
a transparent substrate comprising an object-side surface and an image-side surface opposite to the object-side surface; an infrared absorbing layer positioned on the object-side surface of the transparent substrate; wherein the infrared absorbing layer is a thermo-sensitive ink, the thermo-sensitive ink is cured to be in blue color; and an infrared reflecting film coating on the image-side surface of the transparent substrate, wherein the infrared reflecting film comprises fifty-four layers stacked in an order facing away from the image-side surface; the odd numbered layers of the infrared reflecting film are made from titanium dioxide; the even numbered layers of the infrared reflecting film are made from silicon dioxide.