LG Display has filed a patent for an optical system that includes multiple lenses arranged along an optical axis. The system features a larger effective aperture on the image-side surface of the first lens compared to the object-side surface, and a thinner first lens compared to the second lens. GlobalData’s report on LG Display gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Optical system with sequential lenses and varying aperture sizes
A recently filed patent (Publication Number: US20230314765A1) describes an optical system consisting of a series of lenses arranged along an optical axis. The system includes first to fifth lenses, each with an object-side surface and an image-side surface. The first lens has a larger effective aperture on its image-side surface compared to its object-side surface and has a thinner thickness than the second lens. Additionally, the object-side surface of the first lens has a negative radius of curvature.
The patent also mentions that the first lens has positive refractive power and a meniscus shape convex in the image-side direction. The second lens, on the other hand, has positive refractive power with a convex object-side surface and a concave image-side surface.
Furthermore, the patent describes the thickness of the first lens being smaller than the distance between the first and second lenses. The center thickness of the second lens is thicker than the center thickness of the first, third, fourth, and fifth lenses.
Another embodiment of the optical system includes a first lens with a concave shape and positive refractive power, and a second lens with a surface having a larger effective aperture than the object-side surface of the first lens. The focal length of the first lens is greater than the focal length of the second lens, and the effective focal length of the optical system is smaller than the focal length of the first lens and greater than the focal length of the second lens.
The patent also mentions various configurations of the lenses, including meniscus shapes and convex surfaces. Equations are provided to define the relationships between the lens parameters and distances within the optical system.
In summary, the patent describes an optical system with specific arrangements and characteristics of lenses. The system aims to achieve desired optical properties and performance. The disclosed configurations and equations provide a basis for designing and optimizing optical systems for various applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
