Cam follower for lens barrel and lens barrel

Details Cam follower for lens barrel and lens barrel Cam follower for lens barrel and lens barrel

2008-07-31

2010-11-23

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With support

C359S821000, C359S822000

Reexamination Certificate

active

07839583

ABSTRACT:
A lens barrel has a first group frame, cam followers each having a shaft portion having a straight hollow hole and a slidably contacting portion integral with the shaft portion, which are fixed to the first group frame and a rotating frame having a cam groove with which the cam followers are in slidable contact, which moves relatively to the first group frame. The hollow hole of the cam follower reaches the inside portion of the slidably contacting portion. The shaft portion is press-fit fixed in the shaft hole of the first group frame when an impact force is applied to the lens barrel, the possibility of damaging the frame member is little.

REFERENCES:
patent: 7538960 (2009-05-01), Schwab et al.
patent: 2002/0005993 (2002-01-01), Koiwai
patent: 2000-131588 (2000-05-01), None
patent: 2007-114540 (2007-05-01), None

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