WEARABLE ELECTRONIC DEVICE INCLUDING LENS ASSEMBLY

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WEARABLE ELECTRONIC DEVICE INCLUDING LENS ASSEMBLY

This abstract first appeared for US patent application 20250004245 titled 'WEARABLE ELECTRONIC DEVICE INCLUDING LENS ASSEMBLY

Original Abstract Submitted

a lens assembly is provided. the lens assembly includes a first lens having a positive refractive power and a fixed position, a second lens having a positive refractive power and being movable in position with respect to an optical axis, and a third lens having a positive refractive power and being movable in position with respect to the optical axis together with the second lens, wherein a first film layer is disposed between the first lens and the second lens, wherein a mirror coating layer is disposed on one surface, which is configured to face a display, of at least one of the second lens or the third lens, wherein the first lens, the second lens, and the third lens are sequentially disposed along the optical axis from a user's eye side to a display side, and wherein a ratio of a distance from one surface of the first lens facing the user's eye side to an imaging surface of the display to a distance from one surface of the second lens facing the user's eye side to the imaging surface of the display satisfies a condition defined by 1.55>t/ttl, where ‘total track length (ttl)’ represents the distance from the user's eye-side of the first lens to the imaging surface of the display, and ‘t’ represents the distance from one surface of the second lens facing the user's eye-side to the imaging surface of the display.