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SamsungGranted patentCameras & imagingInterest 6/10

Samsung patents lens system that adjusts focus for different colors

This patent describes a camera system that moves the physical lens to keep images sharp. It calculates the correct lens position by analyzing how red, green, and blue light focus at slightly different points, then blends these values to find the best overall focus.

Why it mattersThis could help cameras produce sharper photos by correcting for color-specific blur, which is common in high-quality lenses.

In the filing’s own words

An image processing system includes an optical lens, a lens driver, an image sensor, and a processor. The processor is configured to, based on a modeled relationship between a disparity and a position of the optical lens for each of a first to a third color channels, and further based on a position of the optical lens at which a sharpness of the third color channel is maximized, determine, for each color channel, a movement distance of the optical lens according to the disparity; determine a disparity value and a weight for each color channel from the image data; and apply the disparity value and the weight to the movement distance of the optical lens for each color channel, to determine a final movement distance of the optical lens. The lens driver is configured to move the optical lens according to the final movement distance.

What exactly they claim (claim 1)

1. An image processing system comprising: an optical lens; a lens driver configured to move the optical lens; an image sensor configured to convert an optical signal transmitted from the optical lens into an electrical signal, to generate image data; and a processor configured to perform image signal processing on the image data, wherein the image data includes a first color channel, a second color channel, and a third color channel, wherein the processor is further configured to: based on a modeled relationship between a disparity and a position of the optical lens for each of the first to third color channels, and further based on a position of the optical lens at which a sharpness of the third color channel is maximized, determine, for each of the first to third color channels, a movement distance of the optical lens according to the disparity; determine a disparity value and a weight for each of the first to third color channels from the image data; and apply the disparity value and the weight to the movement distance of the optical lens for each of the first to third color channels, to determine a final movement distance of the optical lens, and wherein the lens driver is further configured to move the optical lens according to the final movement distance of the optical lens.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
Image processing system
Patent number
US12750577B2
Application number
19063992
Filed
Feb 26, 2025
Granted
Sep 29, 2026
Inventors
5
Claims
20

Classified under

H04N 23/55 Electricity & electronicsG06T 7/50 Physics & computingG06T 7/90 Physics & computingH04N 23/88 Electricity & electronicsH04N 25/611 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.