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热词
    • 7. 发明授权
    • Erecting telescope
    • 架设望远镜
    • US4367010A
    • 1983-01-04
    • US177140
    • 1980-08-11
    • Barry Broome
    • Barry Broome
    • G02B23/00
    • G02B23/00
    • A terrestrial (erecting) telescope that may be inexpensively manufactured with plastic lenses but which telescope will provide a high quality image. The telescope comprises an objective lens, usually a single plano-convex lens, mounted in an outer tube. The telescope further comprises an inner tube in which are fixed an erecting lens system and an eye piece lens system. The erecting lens system comprises two identical plastic lens elements with opposite spherical and aspherical surfaces. The spherical surfaces of the erector lenses are facing. The eye piece lens system comprises a Ramsden eye piece having two plano-convex lenses with facing spherical surfaces. The aperture stop is positioned equidistance between the lenses of the erector lens system.
    • 可以用塑料镜片廉价制造的地面(竖立)望远镜,但望远镜将提供高质量的图像。 望远镜包括安装在外管中的物镜,通常为单个平凸透镜。 望远镜还包括内管,其中固定有竖立透镜系统和眼镜透镜系统。 直立透镜系统包括具有相对的球面和非球面的两个相同的塑料透镜元件。 竖立镜头的球面正面着。 眼片透镜系统包括具有两个具有相对球面的平凸透镜的兰姆斯登眼镜片。 孔径光阑位于竖立透镜系统的透镜之间等距。