Imaging systems having lens substrates with total internal reflection mitigation structures
US10074683B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2014 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Aug 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
Abstract
Imaging systems may include camera modules that include multiple image sensor pixel arrays. A transparent lens substrate may be formed over the image pixel arrays. Lenses may be formed in the lens substrate such that each lens transmits light to a corresponding image sensor pixel array. Total internal reflection mitigation structures such as groove structures may be formed in one or more surfaces of the lens substrate between each of the lenses. The groove structures may include concentric ring shaped grooves in a surface of the lens substrate so that each lens is surrounded by a respective group of concentric ring shaped grooves. The groove structures may have a depth, angle, shape, and spacing that prevents total internal reflection of image light between the lenses so that high incident angle image light incident on a given pixel array is not captured by an adjacent pixel array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.