Sanmina has been granted a patent for an optical rotary joint that allows for the transmission of optical signals between rotating components. The joint includes optical receivers and transmit beam launchers operating at different wavelengths, enhancing signal transmission efficiency. GlobalData’s report on Sanmina gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Sanmina, Treatment progress monitoring was a key innovation area identified from patents. Sanmina's grant share as of April 2024 was 65%. Grant share is based on the ratio of number of grants to total number of patents.

Optical rotary joint for transmitting signals at two wavelengths

Source: United States Patent and Trademark Office (USPTO). Credit: Sanmina Corp

The granted patent (Publication Number: US11921326B2) describes an optical rotary joint designed for data transmission applications. The rotary joint consists of two annular portions - a stationary portion with optical receivers and a rotating portion with optical transmit beam launchers. These components are configured to transmit optical signals at two different wavelengths, with optical bandpass filters ensuring the correct wavelength is received by the optical receivers. The design allows for continuous data transmission as the rotating portion moves relative to the stationary portion.

Furthermore, the patent details the positioning and functionality of the optical components within the rotary joint, including the use of optical fibers, collimators, photodetectors, and lenses to ensure efficient and accurate data transmission. The optical rotary joint is designed to minimize time delay variations in the optical path length, with specific requirements for the angular separation of components to optimize signal reception. Additionally, the patent discusses scenarios where multiple optical receivers can receive signals simultaneously from different transmit beam launchers, enhancing the joint's data transmission capabilities. Overall, the patent outlines a sophisticated optical rotary joint system that enables seamless data transmission in rotary applications.

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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.