Lens base and its accessories for any compact automatic camera

Claim 1

A mounting arrangement for an automatic camera having a main lens, comprising: (a) connector means mounted on the camera, and including a connecting member having a central connector hole aligned along a longitudinal axis with the main lens of the camera and a pair of mutually parallel, elongated guide channels at opposite lateral sides of the central connector hole; (b) a guiding ring including an end wall having a central guide hole aligned along the longitudinal axis with the connector hole, and a pair of guide projections insertable into, and slidable lengthwise along, the guide channels, said guide projections frictionally contacting the guide channels and being frictionally retained in a selected position along the guide channels, said guiding ring having a threaded open end opposite said end wall; (c) an outer cylindrical ring having a threaded end section for threadedly engaging the threaded open end of the guiding ring, an opposite rim end section, a threaded idling section between the end sections, and a threaded intermediate section adjacent the idling section; (d) an inner cylindrical ring having a threaded end portion for threadedly engaging the threaded intermediate section of the outer ring, an opposite threaded portion, and a handle portion for turning the inner ring about the longitudinal axis, said inner ring also having projecting arms for holding a photographic element in front of the main lens of the camera; and (e) a positioning ring threadedly engaging the opposite threaded portion of the inner ring, and retaining the photographic element in position on the inner ring.