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    • 5. 发明授权
    • Decentered lens holding structure and its positioning method
    • 透镜保持结构及其定位方法
    • US5898527A
    • 1999-04-27
    • US828779
    • 1997-03-27
    • Yasumasa SawaiTamotsu KumeHideki NagataAkira SatoMasayuki Ueyama
    • Yasumasa SawaiTamotsu KumeHideki NagataAkira SatoMasayuki Ueyama
    • G02B7/02
    • G02B7/02G02B7/026
    • A structure for holding a decentered lens inside a lens barrel, as well as an axisymmetrical lens. The structure includes: a lens barrel with a lens receiving part projecting inwardly and radially from an inner surface thereof; a decentered lens, with a first lens surface as a reference surface a centering axis of which is made to coincide with an axis of the lens barrel, and a second lens surface, which includes an annular flat surface around the second lens surface, in which the annular flat surface forms a recessed surface relative to the second lens surface, in which the annular flat surface is perpendicular to the axis of the lens barrel, and in which the annular flat surface contacts the lens receiving part of the lens barrel; and a washer, installed on the inner surface of the lens barrel, to fixedly hold the decentered lens, relative to the lens barrel, by pinching the decentered lens between the washer and the lens receiving part of the lens barrel.
    • 用于将偏心透镜保持在透镜镜筒内的结构以及轴对称透镜。 该结构包括:镜筒,其具有从其内表面向内并径向突出的透镜接收部分; 偏心透镜,具有第一透镜表面作为参考表面,其中心轴线与透镜镜筒的轴线重合,第二透镜表面包括围绕第二透镜表面的环形平坦表面,其中 环形平坦表面相对于第二透镜表面形成凹陷表面,其中环形平坦表面垂直于透镜镜筒的轴线,并且其中环形平坦表面接触透镜镜筒的透镜接收部分; 以及安装在透镜镜筒的内表面上的垫圈,通过将偏心镜片夹持在垫圈和透镜镜筒的透镜容纳部分之间来相对于镜筒固定地保持偏心透镜。