Fixing structure for an auxiliary lens of cameras

Details Fixing structure for an auxiliary lens of cameras Fixing structure for an auxiliary lens of cameras

2008-08-28

2010-12-14

Blackman, Rochelle-Ann J (Department: 2862)

Photography

Having lens converter or extension tube

C396S531000, C396S544000, C359S828000, C348S375000

Reexamination Certificate

active

07853137

ABSTRACT:
A means for fixing an auxiliary lens to the outside of the original lens of a camera body includes an annular base, an annular lens mount and an annular abutting base. The inner edge of the base protrudes upwardly to form a wall. The wall protrudes outwards to form a plurality of blocks. The inner edge of the lens mount is provided with a plurality of notches corresponding to the blocks. A first end surface of the abutting base extends to form a plurality of L-shaped elastic arms corresponding to the blocks and notches. The L-shaped elastic arm extends obliquely from the first end surface toward the lens mount. A gap is formed between the L-shaped elastic arm and the abutting base, so that the L-shaped elastic arm can be bent inwardly when compressed. When the camera body is combined with the auxiliary lens by rotation, the blocks pass through the notches to abut and compress the L-shaped elastic arms. At the same time, the L-shaped elastic arms generate a reaction force, thereby enhancing the tightness between the camera body and the auxiliary lens.

REFERENCES:
patent: 4596454 (1986-06-01), Kawai et al.
patent: 5406418 (1995-04-01), Deary
patent: RE35679 (1997-12-01), Tanaka
patent: 2002/0154419 (2002-10-01), Shoji et al.
patent: 2004/0076424 (2004-04-01), Terada et al.

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