Macrolens assembly having a distance adjustment of more than 360

Details Macrolens assembly having a distance adjustment of more than 360 Macrolens assembly having a distance adjustment of more than 360

1988-08-12

1990-02-06

Arnold, Bruce Y.

350252, G02B 702

Patent

active

048984531

ABSTRACT:
A macrolens assembly which has two distance setting rings which are coaxially arranged and are fitted into each other and each of which has on its radial exterior a distance scale. A control window is provided in the lens mount and in the outermost distance setting ring directly abutting there against in radial direction. The inner distance setting ring which can be rotated manually by means of a driving ring can be coupled to the outer distance setting ring by a driver formed as a ball catch. In this way, after one rotation of the driving ring, first the scale on the outer distance setting ring, when the scale on the inner distance setting, becomes visible.

REFERENCES:
patent: 4496217 (1985-01-01), Aoyagi
patent: 4707083 (1987-11-01), Iizuka et al.
patent: 4763987 (1988-08-01), Ando

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