Aperam has patented a method for creating an iridescent effect on surfaces using laser beams with pulse durations less than one nanosecond. The process involves scanning the surface with laser beams in a specific pattern to achieve the desired visual effect. GlobalData’s report on Aperam 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 Aperam, Hydrogen fuel cells was a key innovation area identified from patents. Aperam's grant share as of January 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.

Creating iridescent effect on surface using laser beams

Source: United States Patent and Trademark Office (USPTO). Credit: Aperam SA

A recently granted patent (Publication Number: US11833616B2) discloses a method for creating a visual iridescent effect on the surface of a part using laser beams with a pulse duration of less than one nanosecond. The method involves sending laser beams onto the surface of the part using fixed or mobile devices equipped with laser sources, scanners, and focusing systems. The scanning of the surface is performed along successive lines in a relative direction of travel, with overlapping areas between the optical fields of the devices ensuring the formation of a structured pattern on the surface. The method also includes modifying the polarization of the laser beam to create wavelets of different orientations on successive lines, enhancing the iridescent effect.

Furthermore, the patent also describes a device for implementing the method, comprising fixed or mobile unit devices with laser sources, optical systems, scanners, and means for creating relative movement between the device and the part. The device is controlled by automated means to synchronize the movement and adjust laser beam parameters, ensuring the formation of a random or periodic pattern on the surface. The optical systems of the unit devices can vary the polarization of the laser beam to create distinct wavelet patterns, with the ability to produce lines with different polarizations. The device's design allows for precise control over the iridescent effect created on the part's surface, making it suitable for applications on metal sheets, particularly stainless steel, with three-dimensional surfaces. The device's versatility and precision in creating visually appealing effects make it a valuable innovation in the field of surface treatment technologies.

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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.