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Components of a typical optical lens
2024-04-23
A typical optical lens is mainly composed of a lens, a spacer, a pressure ring and a lens barrel!
An optical lens is a basic unit of an optical lens, and is an optical part formed by two curved surfaces surrounding a transparent medium (such as glass, acrylic, etc.). The shape of the curved surface is usually spherical and aspherical, in which light is mainly refracted. In the actual processing and inspection, the production of spherical lenses is more convenient and simple, and most lenses are spherical (the plane can be regarded as a spherical surface with an infinite radius of curvature).
The spacer is an optical part that maintains the mirror spacing between the two lenses in the optical lens, and is usually a thin ring shape with a rectangular cross-section made of aluminum alloy. The convex surface of the optical lens placed thereon is capable of self-centering. Different from the spacer ring, the outer side of the pressing ring is threaded, and the matching and screwing with the inner thread of the barrel can axially compress the optical lens and the spacer ring inside the barrel.
The lens barrel plays the role of supporting the lens and the spacer in the optical lens, and is usually a thin-walled cylindrical shell made of metal or alloy. There is a coaxial cylindrical positioning ladder inside the barrel. For optical lenses with low precision requirements, the lens spacing and centering accuracy are guaranteed by the machining accuracy of the positioning ladder inside the barrel. The outside of the lens barrel usually has glue injection holes, as well as structural features such as adapter plates and mounting holes that are connected with other mechanical parts of opto-mechanical products.
RP optics offer a variety of high-performance, athermalized, discrete zoom and continuous zoom lenses covering the entire range of SWIR, MWIR and LWIR.
In our product library, you can find lenses suitable for most market applications, including pilot vision enhancement (DVE), perimeter security, border patrol, coastal surveillance, light and small lenses for airborne applications, industrial needs, handheld thermal imaging cameras, aircraft tracking and more!
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