Long distance image capturing device e.g. camera, for e.g. video surveillance field, has optical relay assembly constituted of set of lenses, and image sensor placed in focal plane of zoom lens

摘要

The device has a spherical mirror assembly (110) formed by primary and secondary mirrors (115, 120). An optical relay assembly (130) is constituted of a set of lenses (131-134) and is designed to render the optical combination of the relay assembly and mirror assembly afocal. An image sensor (150) is placed in a focal plane of a zoom lens (145). The relay assembly is designed to form an image of an exit pupil of the mirror assembly on an entrance pupil (155) of the zoom lens for a focal length of the zoom lens.