Dual layer pixel lens for low light cameras
US8921964B1 · kind B1 · utility
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3References
19Claims
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Key dates
| Filing date | Aug 22, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Aug 22, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8053
Abstract
An image sensor for low light cameras including a plurality of image pixels, each including: a photodiode layer; an oxide layer; a metal layer; a first microlens layer for focusing an incident light onto the photodiode layer; and a second microlens layer formed on top of the first microlens layer for generating a collimated light from a sharp-angled light from a low light camera and illuminating said collimated light to the first microlens layer to be focused on the photodiode layer.
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