F-theta Lens

F-theta lens is a professional lens system. The purpose is to form a uniform focused spot of the laser beam in the entire marking plane, so as to solve the off-axis deflection phenomenon after the laser beam passes through the focusing lens system in the marking system. F-theta lens is one of the most important accessories of laser marking machine. F-theta lenses are mainly used in laser marking machines for industrial applications. In the case of no deformation, the position of the focus point depends on the focal length of the lens and the tangent of the deflection angle, and the position of the focus point only depends on the focal length and deflection angle, which simplifies the calculation method of focus positioning. In the case of certifying the accuracy, the cost of the enterprise is reduced.