Seven-Lens Plastic Optical Layout for High-Resolution Miniature Cameras

The patent replaces traditional glass lenses with plastic lenses, which are lighter and more suitable for miniaturization. The plastic material allows the lens to achieve the required optical performance while significantly reducing weight and size, directly resolving the contradiction between resolution and weight.

The patent employs a composite lens structure combining plastic material with specific aspherical surface designs. This composite approach integrates the lightweight property of plastic with advanced optical surface geometry to maintain high resolution while reducing weight, effectively resolving the technical contradiction.

The patent introduces aspherical surfaces on the plastic lenses to correct aberrations. The aspherical curvature design allows a single lens or fewer lenses to achieve the aberration correction that would traditionally require multiple spherical lenses, thus enabling miniaturization while maintaining optical quality.

The patent optimizes various parameters including the aspherical surface coefficients, lens curvature, and spacing between lenses. By carefully adjusting these parameters, the system achieves effective aberration correction with a reduced number of lenses, resolving the contradiction between size and aberration correction.

The aspherical surface design, while optically superior, presents manufacturing challenges. The patent addresses this by developing precise molding techniques and surface processing methods specifically for plastic aspherical lenses, enabling mass production with high precision despite the complex geometry.

The patent optimizes manufacturing parameters including molding temperature, pressure, and cooling rates to achieve consistent aspherical surface formation. By controlling these parameters, the system overcomes the manufacturing precision challenges associated with plastic aspherical lenses.