Muncy, Geissler, Olds & Lowe, P.C.
Light filter structure and image sensor
A light filter structure is provided. The light filter structure includes a first filter layer disposed over the substrate. The first filter layer has a transmittance greater than 50% in a first waveband, wherein the first filter layer is an interference-type filter. The light filter structure further includes a second filter layer disposed over the substrate. The second filter layer has a transmittance greater than 50% in a second waveband, wherein the second filter layer is an absorption-type filter. The first waveband partially overlaps the second waveband at the wavelength in a third waveband, and the third waveband is in an IR region. Furthermore, an image sensor used as a time-of-flight image sensor is also provided.
VISERA TECHNOLOGIES COMPANY LIMITED
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G02B G01S G02B G01S
inventional inventional inventional inventional
Yu-Jen Wei-Ko Chia-Hui
Chen Wang Wu