Nested Curved-Lens Light-Emitting Module for Reduced Source Visibility

The patent applies curved surfaces to both the first and second lenses. The first lens has a convex curved outer surface that faces outward, and the second lens has a concave curved inner surface that faces the first lens. These curved surfaces refract light in multiple directions, preventing direct light paths from the light source to the outside, thereby reducing external visibility while maintaining manufacturing feasibility through injection molding techniques.

The patent implements a nested lens structure where the second lens is positioned inside or overlapping with the first lens. The second lens has a smaller effective aperture than the first lens, creating a nested configuration. This multi-layer nested structure creates multiple refraction interfaces that scatter light effectively, reducing the light source visibility from the outside while maintaining a compact overall structure.

The patent combines multiple lens functions into an integrated assembly where the first lens and second lens work together as a unified optical system. The lenses are positioned and configured to cooperate with each other, with the second lens nested within the optical path of the first lens. This merged structure achieves enhanced light scattering and visibility reduction while maintaining a compact form factor that does not significantly increase device complexity.

The patent applies different surface characteristics to different regions of the lens system. The first lens has a convex outer surface with specific curvature, while the second lens has a concave inner surface with different curvature characteristics. This local differentiation of surface qualities optimizes light refraction at each interface, achieving effective visibility reduction while allowing each lens region to be manufactured using standard molding techniques.