Abstract A device for supporting an objective lens of an optical pickup in which one end of a first leaf spring is secured to a spring mounting portion of a base through a first elastic member. A connective member is secured to the other end of the first leaf spring through a second elastic member. One end of a second leaf spring is secured to the connective member through a third elastic member. A holder member for holding an objective lens is secured to the other end of the second leaf spring through a fourth elastic member. The objective lens is displaceable by one of the two leaf springs in a tracking direction and is displaceable by the other leaf spring in a focusing direction. Each of said elastic members is made of an elastic material different in elastic force from the leaf springs.
A device for supporting an objective lens on an optical pickup, comprising: a base; a holder member for holding an objective lens; spring means having first and second portions, said first portion flexing in a first direction and said second portion flexing in a second direction, with movement of said holder member in a tracking direction being controlled by said first portion and movement of said holder member in a focusing direction being controlled by said second portion; and elastic means for connecting said spring means to each of said base and holder member, said elastic means being made of an elastic material having an elastic force different from said that of said spring means.
Claim 2
Independent Claim
115 words
A device for supporting an objective lens on an optical pickup, comprising: a base; a holder member for holding an objective lens; spring means having first and second portions, said first portion flexing in a first direction and said second portion flexing in a second direction, with movement of said holder member in a tracking direction being controlled by said first portion and movement of said holder member in a focusing direction being controlled by said second portion; and elastic means for connecting said spring means to each of said base and holder member, said elastic means being made of an elastic material having an elastic force different from said that of said spring means.
Claim 3
Dependent Claim
37 words
A device according to claim 1, wherein said spring means comprises a first spring as said first spring portion and a second spring as said second spring portion, with connecting means connecting said first and second springs.
Claim 4
Dependent Claim
19 words
A device according to claim 2, wherein said first and second springs overlap one another in their longitudinal directions.
Claim 5
Dependent Claim
19 words
A device according to claim 2, wherein said first and second springs comprise first and second leaf springs, respectively.
Claim 6
Dependent Claim
21 words
A device according to claim 4, wherein bending directions of said first and second leaf springs are perpendicular to each other.