While it has the same function as a ball lens, the drum lens is easy to handle! It is also easy to fix to a gold frame.
While the ball lens has a surface that is entirely polished, the drum lens has a sanded surface on all sides except for the entrance and exit faces, which are processed parallel to the optical axis. This makes handling easier compared to the ball lens, and it also facilitates attachment to a metal frame. Additionally, it contributes to miniaturization and weight reduction. The half drum lens is a special drum lens that has one side polished to a flat surface. The flat processing provides the advantage of easy bonding to the end face of optical fibers. As a lens, it functions like a thick plano-convex lens, and when parallel light is incident, it images at a lower NA (suitable for SM fibers). Both designs of the drum lens can be made from two types of glass: standard optical glass N-BK7 and high refractive index glass N-LaSF9. *Please note that lenses made of N-LaSF9 are available only while existing stock lasts. Thank you for your understanding. *You can download the catalog from Edmund Optics Japan from the link below.
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basic information
■Standard drum lenses and half drum lenses ■Superior handling and mounting compared to ball lenses ■Lenses with anti-reflective coatings are also available All products are sold individually as standard items. We provide short delivery times due to complete stock sales. ● For more detailed information, product lineup and specifications of standard items, and pricing, please visit the relevant product page on the official website of Edmund Optics Japan, Inc. (You can access it from the product homepage linked above).
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Edmund Optics (EO) is a leading company in optical components, imaging, and photonics technology. It supports markets worldwide, including R&D, electronics, semiconductors, pharmaceuticals, and biomedical fields. EO's products are used in a wide range of applications, from DNA analysis to retinal biometric authentication and high-speed FA applications. With the integration of EO's latest manufacturing capabilities and global logistics network, it is recognized in the market as the No. 1 supplier of optical components available for stock sale. Japanese customers are served by the local subsidiary, Edmund Optics Japan Co., Ltd.
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Company information
Edmund Optics is a photonics and imaging company that has been manufacturing and supplying precision optical components and subassemblies to industries worldwide since its founding in 1942. In addition to the design and manufacture of a wide range of optical components, imaging systems, and optomechanical devices, Edmund Optics also supports OEM applications through the mass production of both stock items and custom products.