B. Braun Melsungen has been granted a patent for a sensor array that can record both color and hyperspectral images. The sensor array includes an image sensor with multiple photocells, each assigned a color filter. The photocells are grouped into subcells and the subcells are grouped into supercells. Each subcell has color filters for multiple color channels, covering the entire visible spectrum. The characteristic wavelengths of the color filters differ between the subcells of a supercell. GlobalData’s report on B. Braun Melsungen gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on B. Braun Melsungen, shapeable guide catheters was a key innovation area identified from patents. B. Braun Melsungen's grant share as of September 2023 was 56%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for a sensor array for recording color images

Source: United States Patent and Trademark Office (USPTO). Credit: B. Braun Melsungen AG

A recently granted patent (Publication Number: US11778288B2) describes a sensor array for capturing both color and hyperspectral images. The sensor array includes an image sensor with multiple photocells, each assigned a color filter. The photocells are grouped into subcells, which are further grouped into supercells. The color filters in each subcell differ in their characteristic wavelengths, allowing for a wider range of colors to be captured.

The patent also mentions that some supercells may have subcells with the same characteristic wavelength for a specific color channel or filter, while other subcells within the same supercell have different characteristic wavelengths. Additionally, the supercells can have a rectangular or square pattern of subcells, with the option of having a different number of subcells per row or column.

The subcells are designed to include at least four photocells, forming a rectangular or square pattern. They can also have at least three color filters for different color channels, or an additional filter with a characteristic wavelength outside the visible range.

The patent further describes the arrangement of color filters and additional filters within the supercells, with equidistant separations between adjacent filters. The characteristic wavelengths of color filters assigned to the same color channel in one supercell can have equal separations as the characteristic wavelengths of color filters assigned to a different color channel in the same supercell.

The patent also mentions the possibility of repeating the supercell or subcell structure periodically, as well as the use of interference filters for color and additional filters. The bandwidths of adjacent color filters or additional filters within a supercell can overlap or have a gap between them.

The patent includes methods for calculating color and hyperspectral images using the sensor array, as well as carrying out white balance adjustments. An endoscope incorporating this sensor array is also mentioned.

Overall, this patent describes a sensor array design that allows for the capture of both color and hyperspectral images, with flexibility in the arrangement and characteristics of the color filters.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.