F-theta lens system FF 100 1064 M85

industrial

A new optical design for laser engraving lenses M85-M55 Mount Flat Field / Double Flange Series - Scan Lenses with enhanced field flatness and double flange An optical system naturally creates a focus point distance from the centre of the focus area, which is proportional to the tangent of the beam's angle of incidence with respect to the optical axis of the lens. However, in the classical f-theta distortion condition, the distance between the laser spots is directly proportional to the angle of incidence of the laser beam. This specific type of lens distortion is necessary for the laser engraving industry because of the analogue control found in early galvanometric scan heads. It ensures a linear response to the input voltage, providing accurate positioning. Digital scanning head control is a today well-established technology that utilizes dedicated look-up correction tables to achieve the highest accuracy in laser positioning. The correction for ideal f-theta distortion is just one aspect of the total error and is managed in conjunction with the construction of the laser spot position/scan head drive signal table. This led to the conception of a new optical design for laser engraving lenses. During the optimization stage, we eliminated the f-theta distortion constraint and prioritized other optical parameters, such as: - - flatness of the focus area - - uniform laser spot size across the engraving field - - compact design In addition to OPTO5's standard f-Theta series, we provide the Flat Field lens series which includes a double thread system (M55/M85) that enables it to be mounted on M55 threaded scan heads sans adapters.