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    • 1. 发明授权
    • Observation device
    • 观察装置
    • US07372645B2
    • 2008-05-13
    • US10507118
    • 2004-09-10
    • Sander Willem Van SchaikCornelis Johannes Janson
    • Sander Willem Van SchaikCornelis Johannes Janson
    • G02B7/02
    • G08B13/19619
    • An observation device includes a housing and an optical lens having a field of view. The housing includes an outer dome having at least one transparent portion and an inner dome. The optical lens is accommodated within the housing. The outer dome is transparent in the field of view of the lens and is configured to protect the lens. The observation device is resistant to impact by an object with a maximum impact energy of a first magnitude. A like observation device, but lacking an inner dome, is resistant to impact by the object with a maximum impact energy of a second magnitude. The ratio between the first magnitude and the second magnitude is at least 1.1.
    • 观察装置包括壳体和具有视野的光学透镜。 壳体包括具有至少一个透明部分和内圆顶的外圆顶。 光学透镜容纳在壳体内。 外圆顶在透镜的视野中是透明的,并且被配置为保护透镜。 观察装置耐受具有第一大小的最大冲击能量的物体的冲击。 类似的观察装置,但缺乏内圆顶,抵抗物体的冲击,具有第二大的最大冲击能量。 第一幅度与第二幅度之比至少为1.1。