首页> 外国专利> A New or Improved Means or Apparatus for Testing Telescopes, Opera and Field Glasses, and the like.

A New or Improved Means or Apparatus for Testing Telescopes, Opera and Field Glasses, and the like.

机译:用于测试望远镜,戏曲眼镜和野外眼镜等的新的或改进的装置或设备。

摘要

11,588. Aitchison, J., and Drysdale, C. V. May 21. Telescopes and opera-glasses.-Relates to apparatus for determining the magnifying power and the angular field of view of telescopes and the like. The instrument to be tested is placed upon a table h, and directed towards a collimator a with an illuminated scale c, an image of which is projected upon a screen g by the auxiliary lens f. The scale c may be replaced by a single slit between which and the lens b, a Maddox or bi-prism may be placed.
机译:11,588。 Aitchison,J。和Drysdale,C.V.,5月21日。望远镜和手术眼镜。涉及确定望远镜等的放大倍数和视场角的装置。将要测试的仪器放在桌子h上,并对准带有照明标尺c的准直仪a,其图像通过辅助透镜f投射到屏幕g上。标尺c可以用一个狭缝代替,在狭缝和透镜b之间可以放置Maddox或双棱镜。

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