Curved light guides increase design flexibility
The non-linear LED-based light guides can be integrated into a variety of products, from overhead lighting and wall sconces to automotive interior/exterior lighting such as dome lights, passenger compartment lighting, and daytime running lights, as well as white goods and consumer electronics devices.
The capability was made possible by two developments within the company. The first was the development of a thin film embossing process allowing light guides to be manufactured 0.25 mm or less in thickness. The flexible parts can be used in applications requiring flexible or mechanically curved product. The second was a change to the manufacturing process of the optical extraction features embedded in the light guides, allowing GLT to create the extraction features onto curved surfaces. This allows for thicker lightguides to be injection molded while having curved emission surfaces.
The curvature of the light guides can be custom designed for various applications. Typical sizes range from 0.25 mm to 4 mm thick and can be created in sizes greater than 24-inch in diagonal, depending on the application.
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