What is the main purpose of the carrier in a lenticular lens?

The main purpose of the carrier in a lenticular lens is to provide a non-optical boundary. In the context of lenticular lenses, the carrier acts as the structural component that holds the optical lens elements in place. It essentially provides a framework that supports the lenticular design, ensuring that the lens maintains its shape and compatibility with various eyewear frames.

This non-optical boundary is critical because it separates the optical surfaces of the lens from the surrounding environment. It helps with the stability of the optical elements and contributes to the effective positioning of the lens in relation to the wearer's eye. By serving as a designated area for attachment and alignment, the carrier ensures that the lens functions correctly in delivering the intended visual benefits.

The other choices, while related to lens functionality, do not specifically capture the primary role of the carrier. Holding the lens securely is tangled with its structural purpose, but this is a secondary consequence rather than its main function. Improving optical quality and aiding in measurements pertains more to the design and manufacturing aspects of the lens rather than the role of the carrier. Thus, recognizing the carrier’s primary role as providing a non-optical boundary helps clarify its importance in the overall lens assembly.