Chen Jichun. About the Design of the Optical system of an Orthoprojector[J]. Geomatics and Information Science of Wuhan University, 1981, 6(1): 91-97.
Citation: Chen Jichun. About the Design of the Optical system of an Orthoprojector[J]. Geomatics and Information Science of Wuhan University, 1981, 6(1): 91-97.

About the Design of the Optical system of an Orthoprojector

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  • Published Date: January 04, 1981
  • The zoom system is applied widely in the orthoprojector,working on the principle of the functional or the photographic projection.In this paper the characteristics of the vari-focal kernel with two elements is analysed and the design idea of the zoom system applied to orthoprojectors is described.Futhermore,an example of design with two zooms is given.
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