Telescopic lens system and method for the same system

Telescopic lens system and method for the same system

  • CN 1,439,929 B
  • Filed: 02/21/2003
  • Issued: 04/16/2014
  • Est. Priority Date: 02/21/2002
  • Status: Active Grant
First Claim
Patent Images

1. a scalable Zoom lens system, is provided with multiple lens combination;

  • It is characterized in that,When described scalable Zoom lens system is in the position of preparing photograph, described all multiple lens combination are positioned on a common optical axis to form a photo-optic system;

    AndWhen described scalable Zoom lens system is during in punctured position, in described multiple lens combination, at least one movable lens group is moved to the shift position that is positioned at common optical axis outside, and in described multiple lens combination, at least one lens combination and described at least one movable lens group in remaining lens combination moved respectively afterwards;

    Wherein said Zoom lens system comprises imageing sensor frame (11), supports the rotatable lens bracket (21) of described at least one movable lens group, with bracing frame (20) and the cam ring (18) of described lens bracket (21), wherein said cam ring (18) therein surface has one group of cam path (18c);

    Wherein said bracing frame (20) comprises eccentric pivots (20c), and this eccentric pivots (20c) is parallel to described optical axis extends, and described lens bracket (21) can rotate around described eccentric pivots;

    Wherein, by being formed on engaging of one group of inverted cam piece (20a) on support frame as described above (20) outside surface and described group of cam path (18c), the rotation forward or backwards of described cam ring (18) makes bracing frame (20) move forward and backward along rotation according to the profile of this group cam path;

    Wherein said rotatable lens bracket (21) is provided with a cylindrical swing part (21c), and described cylindrical swing part (21c) is provided with a position control projection (21f) on its outer periphery surface;

    Described imageing sensor frame (11) is provided with the position control cam lever (11a) stretching out forward on its front surface, and described position control cam lever (11a) is also provided with a convex surface (11a2) at its front end;

    The motion backward of wherein said bracing frame (20) contacts the position control projection (21f) of rotatable lens bracket (21) and the convex surface (11a2) of position control cam lever (11a), by position control projection (21f) and engaging of convex surface (11a2), make described rotatable lens bracket (21) around eccentric pivots (20c) rotation subsequently, make so described at least one movable lens group retract from optical axis.

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