IMAGING SYSTEM FOR SENSING 3D image
AssigneeHimax Imaging Limited
InventorPo-Chang Chen
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Abstract
The present invention provides an imaging system, comprising: a lens, an image sensor, and a dual-mode optical filter. The lens is utilized for receiving a visible light and an IR light. The image sensor comprises: a pixel array, a micro-lens array, and an IR filter array. The pixel array has a first group of pixels and a second group of pixels. The IR filter array comprises a group of IR blocking filters for blocking the IR light to prevent the IR light from reaching the second group of pixels. The dual-mode optical filter is disposed between the lens and the image sensor, and has a dual window transmission spectrum comprising: a first pass band to pass the IR light; and a second pass band to pass the visible light both onto the image sensor.
Claims9
An imaging system for sensing a 3D image, the imaging system comprising:
- a lens, for receiving a visible light and an infrared (IR) light;
- an image sensor, comprising:
- an pixel array, having a first group of pixels and a second group of pixels;
- a micro-lens array, for focusing the visible light and the IR light onto associated pixels;
- and
- an IR filter array, disposed between the micro-lens array and the pixel array, comprising a group of IR blocking filters for blocking the IR light to prevent the IR light from reaching the second group of pixels;
- and
- a dual-mode optical filter, disposed between the lens and the image sensor, having a dual window transmission spectrum comprising:
- a first pass band to pass the IR light;
- and a second pass band to pass the visible light both onto the image sensor.
Dependencies are inferred from the claim text.