TT Electronics has filed a patent for an inspection device designed to inspect panels, such as displays or PCBs, using a system of mirrors and sensors. The device provides magnification greater than one and ensures telecentricity on both the panel and sensor sides. GlobalData’s report on TT Electronics 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 TT Electronics, Flexible electronic circuits was a key innovation area identified from patents. TT Electronics's grant share as of January 2024 was 52%. Grant share is based on the ratio of number of grants to total number of patents.

Inspection device for panels with telecentric system

Source: United States Patent and Trademark Office (USPTO). Credit: TT Electronics plc

A patent application (Publication Number: US20240011920A1) describes an inspection device designed for examining panels, such as displays or PCBs. The device includes a first mirror, a second mirror, a third mirror, and a sensor. These mirrors are strategically arranged to display a section of the panel on the sensor with a magnification factor greater than 1. The mirrors form a telecentric system, ensuring telecentricity on both the panel-facing side and the sensor-facing side. The first mirror, second mirror, and third mirror have specific curvatures, with at least one mirror being spherical. Additionally, the device incorporates apertures that are decentred relative to a common optical axis, contributing to the system's functionality.

Furthermore, the inspection device's method involves capturing an image of the panel section using the mirrors and sensor, displaying it with a magnification factor greater than 1. The device is particularly useful for inspecting displays or printed circuit boards. By utilizing mirrors with different curvatures and specific focal lengths, the system can effectively examine panels with reduced aberrations. The method also includes the use of planar fold mirrors and a camera unit mounted with the mirrors, allowing for precise inspection of various panel sections based on the X/Y-stage's movement. Overall, this patent application showcases an innovative approach to panel inspection, emphasizing magnification, curvature, and optical precision in the examination process.

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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.