Macro zoom lens

Details Macro zoom lens Macro zoom lens

1977-12-05

1978-09-12

Sacher, Paul A.

G02B 1518

Patent

active

041133552

ABSTRACT:
The present invention relates to a macro zoom lens capable of taking a close up photograph at the one end at which a wide lens effect is obtained and at the other end at which a telephoto lens effect is obtained. One or two groups of the movable lenses in the zoom lens move in a movable direction along the optical axis at the one end at which a wide lens effect is obtained. At the other end, a telephoto lens effect is obtained. The distance between each lens and its next lens in the zoom lens in the ordinary zooming state is small as compared with the distance between the corresponding lenses at the time of taking a close up photograph.

REFERENCES:
patent: 3884555 (1975-05-01), Suwa et al.

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