Optical part assembly
An optical part assembly includes a mirror main body including a base having a mirror support section that is formed integral with the base and a projected tip, a mirror mounted on the projected tip, a casing that has an opening in which to expose the mirror support section at a tip thereof, that has a rear end closed with a bottom plate, and that accommodates the mirror main body, a plurality of driving sections that are disposed on the bottom plate of the casing and act on the base to swing the base, a ring member having an opening and fixed to a front end part of the casing, a magnetic fluid that is disposed between the mirror support section and the ring member, and a plurality of springs that make contact with a front end part of the base and that elastically support the mirror main body.
1 . An optical part assembly comprising:
a mirror main body including a base and a cylindrical mirror support section that is formed integral with the base and having a projected tip;
a mirror mounted on the projected tip of the cylindrical mirror support section;
a casing that has an opening in which to expose the cylindrical mirror support section at a tip thereof, that has a rear end closed with a bottom plate, and that accommodates the mirror main body;
a plurality of driving sections that are disposed on the bottom plate of the casing and act on the base to swing the base;
a ring member having an opening and fixed to a front end part of the casing;
a holding member fixed to an inner circumference of the casing;
a plurality of elastic members disposed between the base of the mirror main body and the holding member; and
a magnetic fluid that is disposed between an outer peripheral surface of the cylindrical mirror support section of the mirror main body and the ring member to fill the opening of the ring member.
2 . The optical part assembly according to claim 1 ,
wherein each of the driving sections includes a piezo-actuator and a pin which is coupled with the piezo-actuator and a tip of which makes contact with the base.
3 . An optical part assembly comprising:
a mirror main body including a base and a mirror support section that is formed integral with the base and having a projected tip;
a mirror mounted on the projected tip of the mirror support section;
a casing that has an opening in which to expose the mirror support section at a tip thereof, that has a rear end closed with a bottom plate, and that accommodates the mirror main body;
a plurality of driving sections that are disposed on the bottom plate of the casing and act on the base to swing the base;
a ring member having an opening and fixed to a front end part of the casing;
a holding member fixed to an inner circumference of the casing;
a plurality of elastic members disposed between the base of the mirror main body and the holding member;
a magnetic fluid that is disposed between the mirror support section of the mirror main body and the ring member to fill the opening of the ring member;
a first ring magnetized in N pole and disposed at the opening of the ring member; and
a second ring magnetized in S pole and disposed at the opening of the ring member,
wherein the magnetic fluid is disposed between the first and second rings and the mirror support section.
4 . The optical part assembly according to claim 1 ,
wherein each of the driving sections is mounted outside the bottom plate, and
a coupling member inserted in a through hole formed in the bottom plate and couples the driving section with the base.
5 . The optical part assembly according to claim 1 , wherein the mirror is fixed to the cylindrical mirror support section such that the mirror, the cylindrical mirror support section of the mirror main body, and the base of the mirror main body all move together when acted upon by the plurality of driving sections.
6 . The optical part assembly according to claim 1 , wherein the base of the mirror main body is of a larger outer diameter than that of the cylindrical mirror support section of the mirror main body.