This inventor holds 8 USPTO granted patents and 2 published patent applications. Top assignees: Asia Optical Co., Ltd., Sintai Optical (Shenzhen) Co., Ltd.. Active years: 2021-2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
8 out of 497 
8 out of 220 Years Active: 2021-2025
Title: Biography of An-Kai Chang
Introduction
An-Kai Chang is a prominent inventor based in Taichung, Taiwan. He has made significant contributions to the field of optical technology, holding a total of 8 patents. His innovative designs have advanced the development of lens assemblies, showcasing his expertise in optics.
Latest Patents
Among his latest patents is a lens assembly that includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens is a meniscus lens with negative refractive power, while the second lens possesses positive refractive power and features a convex surface facing the image side. The third lens is another meniscus lens with positive refractive power, followed by a fourth lens with positive refractive power and a fifth lens that also has refractive power, including a convex surface facing the object side. These lenses are arranged sequentially from the object side to the image side along an optical axis. Another notable patent involves a lens assembly comprising a first lens, a second lens, a third lens, a fourth lens, a sixth lens, a seventh lens, and an eighth lens, arranged in a similar manner. This assembly includes various lenses with different refractive powers, demonstrating Chang's innovative approach to lens design.
Career Highlights
An-Kai Chang has worked with several reputable companies in the optical industry, including Sintai Optical (Shenzhen) Co
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile