Largan Precision has been granted a patent for an optical photographing lens assembly with nine lens elements, including aspheric lens surfaces with inflection points. The design features an air gap between the eighth and ninth elements, with specific axial distances and focal lengths meeting defined conditions. GlobalData’s report on Largan Precision gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Largan Precision, AR/VR head-up displays was a key innovation area identified from patents. Largan Precision's grant share as of January 2024 was 82%. Grant share is based on the ratio of number of grants to total number of patents.
Optical photographing lens assembly with nine lens elements
A recently granted patent (Publication Number: US11885937B2) discloses an optical photographing lens assembly consisting of nine lens elements arranged from the object side to the image side. Notably, the assembly includes at least three lens elements with aspheric lens surfaces containing inflection points. Additionally, there is an air gap between the eighth and ninth lens elements, with the ninth lens element possessing negative refractive power. The patent specifies various conditions related to axial distances, focal length, entrance pupil diameter, and other parameters to ensure optimal performance of the lens assembly.
Furthermore, the patent outlines specific conditions related to the axial distances between lens elements, central thicknesses, Abbe numbers, and focal lengths to meet the desired optical characteristics. For instance, the ratio of the maximum axial distance between adjacent lens elements to the minimum central thickness must fall within a specified range. Similarly, conditions regarding the sum of axial distances, central thicknesses, and focal lengths of individual lens elements are defined to ensure the overall functionality and performance of the optical system. These stringent criteria aim to enhance the imaging capabilities and efficiency of the lens assembly for various photographic 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.
