In the paper , the testing scheme and making of a aspheric ge lens that used in planar wide - angle altazimuth was described 就平面广角地平仪设计中用到的一块非球面的小型锗透镜作了检验设计和加工。
2.
E . g . the ge lens used in planar wide - angle altazimuth , indirect ophthalmoscopy lens in ophthalmic diagnosis , zoom lens of camera , all were minor aspheric component 例如，红外广角地平仪中的锗透镜、眼科诊断用的间接眼底镜、变焦照相机镜头、刻录机光头等都是小型的非球面元件。
3.
Jt91 - 200 artillety gyro altazimuth is a fix instument which can research the grid north automatically and determine grid north azimuth at any direction . it works by making use of the physical features of gyro and influences of earth rotation . the equipment of this instument will play a important role in topographic clement Jt91 - 200型炮兵陀螺经纬仪是利用陀螺本身的物理特性和地球自转的影响，实现自动寻找其北方向和测定任一方向线的真北方位角的定向仪器。该型炮兵陀螺经纬仪的装备使用，对我军炮兵测地分队的测地保障发展将产生重大影响。
