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    • 1. 发明授权
    • Wide field four mirror telescope using off-axis aspherical mirrors
    • 宽场四镜望远镜采用离轴非球面镜
    • US08011793B2
    • 2011-09-06
    • US11792970
    • 2004-12-15
    • Wolfgang HolotaBernd HarnischVolker Kirschner
    • Wolfgang HolotaBernd HarnischVolker Kirschner
    • G02B23/06
    • G02B17/0657G02B23/06
    • A telescope has an entrance pupil region; a first concave mirror (M1) belonging to a first rotationally symmetric aspheric surface and reflecting light passing through the entrance pupil region; a second convex mirror (M2) belonging to a second rotationally symmetric aspheric surface and reflecting light reflected by the first mirror; a third convex mirror (M3) belonging to a third rotationally symmetric aspheric surface and reflecting light reflected by the second mirror; a fourth concave mirror belonging to a fourth rotationally symmetric aspheric surface and reflecting light reflected by the second mirror to an exit pupil. The first, second, third and fourth rotationally symmetric aspheric surfaces are centered on the symmetry axis of the third mirror. The first, second and fourth mirrors are centered along the first direction perpendicular to the optical axis and off-centered in a second direction perpendicular to the symmetry axis and to the first direction.
    • 望远镜有入口瞳孔区域; 属于第一旋转对称非球面的第一凹面镜(M1)并且反射穿过入射光瞳区域的光; 属于第二旋转对称非球面的第二凸面镜(M2),并反射由第一反射镜反射的光; 属于第三旋转对称非球面的第三凸面镜(M3),反射由第二反射镜反射的光; 属于第四旋转对称非球面的第四凹面镜,并将由第二反射镜反射的光反射到出射光瞳。 第一,第二,第三和第四旋转对称非球面以第三反射镜的对称轴为中心。 第一,第二和第四反射镜沿着垂直于光轴的第一方向居中,并且在垂直于对称轴线和第一方向的第二方向上偏心。