WebF-theta lenses are important in industrial material processing, especially in the drilling, welding, and cutting of synthetic materials. They are also used in biotechnics, specifically … WebF-Theta lenses are specially designed for laser material processing applications. High Laser Damage Threshold AR coatings provide excellent throughput and durability. Typical focusing lenses offer an optimized focus for a single spot, however F-Theta lenses provide an optimized focus at many locations in the scan field on the workpiece. n If you do not find …
Understanding Lens Distortion Shanghai Optics
WebF-theta lenses (used in laser scanning systems) are usually designed to produce a certain amount of distortion (barrel distortion) so that the image height is proportional to the field … WebThe beam radius w lens at the lens must be small enough to avoid truncation or excessive spherical aberrations. Typically, it will be of the order of half the aperture radius of the lens (or perhaps slight larger), and in that case ( w lens = D / 4 = NA · f / 2 , with the beam divergence angle being only half the NA) the achievable beam radius in the focus is gfw - the furniture warehouse
(PDF) Optical design and performance of F-Theta lenses
Web28 Oct 2024 · In combination with an f-theta lens, which translates the constant-angular-velocity scan of a polygon mirror to a constant-linear-velocity scan at the work surface, a polygon mirror (and its associated motor) can straightforwardly produce a highly accurate scan. Following are some commercial examples of the art. Web24 Mar 2024 · F-theta lenses are used at wavelengths across the optical spectrum. II-VI (Saxonburg, PA) produces a portfolio of f-theta lenses that cover wavelengths from the … Web11 Dec 2024 · F-θ lenses have found many diverse applications in highly accurate laser beam scanning over the entire electromagnetic spectrum.These applications include drilling precise holes using UV lasers, 1 1. T. Araki, T. Hirai, and T. Kyotani, “ Development of F-theta lens for UV lasers,” SEI Tech. Rev. 69, 59– 65 (2009). optical coherence tomography in the … gfw the furniture warehouse