Tag Archives: optics

Surplus Shed sells lens, various parts, and products in optics

http://www.surplusshed.com  

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Basic design of submarine periscope

Source http://www.maritime.org/fleetsub/pscope/chap1.htm 1A8. Limits of periscope design. It is seen from the preceding section that there are definite limits in periscope design. The vital factors, as in a telescope, are: 1) length of tube, 2) diameter, 3) illumination, 4)magnification, and 5) size of field. If a … Continue reading

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