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Multi-camera system using folded optics

A camera and optical axis technology, applied in the field of imaging systems, can solve the problems of reducing image resolution, increasing lens incident angle, low sensor MTF performance, etc.

Active Publication Date: 2019-03-01
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since MTF roll-off can also be inversely related to focal length, a reduction in focal length in a mobile device can reduce resolution at the edges of the image
In addition, shorter focal lengths can increase the angle of incidence of the lens' chief ray, which can also produce undesirable artifacts including increased optical and electrical crosstalk between pixels, and lower sensor MTF performance

Method used

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Embodiment Construction

[0026] Implementations disclosed herein provide systems, methods and apparatus for mobile imaging applications. For example, as explained herein, it may be desirable to reduce the form factor of mobile devices while maintaining or improving image quality. Implementations disclosed herein can be used in mobile devices to reduce the thickness of the imaging system by using multiple imaging sensors and / or multiple lenses that span the field of view of the imaging system. In various implementations, an array of cameras and / or imaging sensors may be provided adjacent to one or more reflective surfaces. The array of sensors can capture multiple overlapping images that can be stitched together to form a single image while maintaining high image quality and resolution. By laterally spacing multiple sensors on a substrate or otherwise adjacent to each other in the system, the overall height or thickness of the imaging system can be reduced. In various implementations, the disclosed s...

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Abstract

Methods and devices for capturing target images of a scene using multiple image sensors are described herein. As described, positioning at least one reflective or refractive surface near the plurality of image sensors enables the sensors together to capture images with a larger image size than any image sensor by using the reflective or refractive surface to direct a portion of the image scene to each sensor. The sensors can individually capture images with wider field of view and longer focal length images. Different portions of the scene captured by the sensor may overlap, and may be aligned and cropped to produce the target image.

Description

technical field [0001] The present invention relates to imaging systems and methods including multi-camera arrays. In particular, the present invention relates to systems and methods that enable low profile imaging systems and mobile devices while maintaining or improving image quality. Background technique [0002] Many mobile devices, such as mobile phones and tablet computing devices, include cameras that can be operated by a user to capture still and / or video images. Because mobile devices are typically designed to be relatively small, it may be important to design the camera or imaging system to be as thin as possible in order to maintain a low profile mobile device. In various conventional devices, the thickness of the mobile device is kept as small as possible by turning the imaging sensor on its side and using reflective means to bend light rays to the sensor. However, this particular solution is highly unstable because the width of the imaging sensor and the pixel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232G06T3/40
CPCG06T3/4038H04N23/55H04N23/57H04N23/698H04N25/41H04N7/18H04N23/90G02B13/0065
Inventor T·G·格奥尔基耶夫T·W·奥斯本S·R·戈马
Owner QUALCOMM INC
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