Design Of Solar Blind Ultraviolet Warning Optical System

In the modern warfare, the missile has become the most important weapon in the military field because of its huge destructive power.So how to successfully intercept missiles and avoid the loss of the military, has become an important issue in the military development.Because of its high sensitivity, low false alarm rate and military concealment, the solar blind ultraviolet warning technology has been applied widely in military field in the early 90 s, and has been developing rapidly over the past 20 years.In this paper,a solar blind ultraviolet warning refractive optical system with six lens is designed.Its working band is 240nm~280nm, the relative aperture is 1/4, the effective focal length is 38 mm, and the field of view is 2?=40°.The system has the characteristics of large field of view and large relative aperture.PIXIS 2048 BUV UV CCD is applied as a detector, its pixel is 13.5?m×13.5?m.Image quality evaluation shows that the system can only use an aspheric lens and a binary diffraction surface to meet the requirements of the optical performance of the alarm system,compared with the present level of design, the use of a free surface is reduced.Compared with the existing solar blind ultraviolet warning optical system, the optical system is superior in the structure.