. The microscope; an introduction to microscopic methods and to histology. Microscopes. Ch. Ill] BINOCULAR MICROSCOPES 8S While more or less successful efforts had long been made to produce binocular microscopes with a single objective, the optical requirements Ocular 1 2^lar. Fig. 53. Ives Binocular Arrangement for All Powers. (Journal of the Franklin Institute, Dec. 1902). Objective The single objective. pb The prism box at the lower end of the tube. a,b,c The prisms dividing the light equally from each point to the two eyes. a, b The transparent silvered surface in the prism allowing half t
. The microscope; an introduction to microscopic methods and to histology. Microscopes. Ch. Ill] BINOCULAR MICROSCOPES 8S While more or less successful efforts had long been made to produce binocular microscopes with a single objective, the optical requirements Ocular 1 2^lar. Fig. 53. Ives Binocular Arrangement for All Powers. (Journal of the Franklin Institute, Dec. 1902). Objective The single objective. pb The prism box at the lower end of the tube. a,b,c The prisms dividing the light equally from each point to the two eyes. a, b The transparent silvered surface in the prism allowing half the light to pass through and half to be reflected to the right. c Prism at the right reflecting the light upward to the right eye, as, ad- justing screw to tilt the prism c, at the correct angle for the position of the right ocular. apd Adjustment for the pupillary distance. Ocular, I, Ocular 2 The oculars for the right and the left eye. • Axis I The principal optic axis for the left eye. Axis 2 The principal optic axis for the right eye. Due to the length of the prism c, this axis is optically of the same length as Axis I for the left eye. were not fully grasped. Recently, however, Mr. Frederic E. Ives has stated the optical principles with great clearness, and shown how binocular microscopes using a single objective can be Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gage, Simon Henry, 1851-1944. [Ithaca, N. Y. The Comstock publishing company
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