Big visual field three anti - systems of off -axis

The utility model relates to a big visual field three anti - systems of off -axis, including primary mirror, secondary mirror, aperture stop, three mirrors and coke side, the primary mirror is the off -axis hyperboloidal mirror, and the secondary mirror is the convex spherical speculum, and three mirrors are the concave oblate spheroid mirror of off -axis secondary, and female gross rail load on axle of primary mirror and three mirrors is closed to the axis of reference, and aperture stop sets up on the secondary mirror, and female gross rail load on axle of the optical axis of secondary mirror and three mirrors is closed, the target light that comes from infinite distant place gets into three mirrors by inferior mirror reflection through primary mirror reflection late arrival secondary mirror again, and three last mirrors are with image formation by rays to coke side. The utility model provides a big visual field three anti - systems of off -axis design with process, debug between contradiction, the utility model discloses a big visual field three anti - systems of off -axis has adopted a comparatively simple structural style, can realize wide picture formation of image, and wherein the available field of view can reach 12 3.5.