Zoom lens optical system

Details Zoom lens optical system Zoom lens optical system

G - Physics

02

B

88/100

G02B 15/16 (2006.01) G02B 7/105 (2006.01) G02B 13/18 (2006.01) G02B 15/06 (2006.01) G02B 15/14 (2006.01) G02B 15/22 (2006.01)

Patent

CA 1079557

ABSTRACT OF THE DISCLOSURE The present invention provides an optical system com- prising a negative supplementary element and a lens adjustable for focussing onto an object lying within a macro range, in which the supplementary element is mounted in front of the lens as seen in the direction of incident light and has a focal length in the macro range of the lens.

258596

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