Refractor optical system

Details Refractor optical system Refractor optical system

A - Human Necessities

61

B

88/121.5

A61B 3/00 (2006.01) A61B 3/12 (2006.01) G02B 3/00 (2006.01)

Patent

CA 1112924

AO-3272 AHS/gg REFRACTOR OPTICAL SYSTEM Abstract of the Disclosure A refractor optical system having a new series of spherical and cylinder lenses substantially eliminates the irregular occurence of additive errors when lenses spaced from the reference plane are used or more than two lenses are combined and permits correction for the significant additive errors by non-additive lens selection.

324311

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