Barrier mechanism, camera, and mobile information terminal

摘要

A barrier mechanism includes a barrier blade group (G1) having barrier blades (A1), (B1), (C1) which are rotatably retained by a single spindle (S11); an elastic member (E11) provided to the spindle (S11) substantially coaxially with a rotating center of the barrier blade group (G1), and configured to generate torque for driving the barrier blade (A1) to rotate,' and a frame member formed by a barrier cover (F1) and a barrier (F2) each including an aperture serving as a window for opening an effective optical path of an optical lens, and configured to house the barrier blade group (G1) and the elastic member (E1) between these members. The spindle (S11) includes a flange portion (S11f) configured to separate the barrier blade group (G1) from the elastic member (E11) in a direction of an optical axis.

主权项

1. A barrier mechanism including a barrier blade group having at least two barrier blades which are rotatably retained by a single spindle, at least one barrier blade among the barrier blades being configured to be driven to rotate, and the rest of the barrier blades being configured to rotate following the rotation of the driven barrier blade,
the barrier mechanism placed on a front face of an optical lens, the barrier mechanism configured
to establish a barrier closed state for protecting the optical lens by making the barrier blades of the barrier blade group rotationally enter an effective optical path of the optical lens, and thereby shielding the effective optical path of the optical lens, andto establish a barrier opened state for opening the effective optical path of the optical lens by making the barrier blades of the barrier blade group rotationally recede out of the optical path of the optical lens, the barrier mechanism comprising: an elastic member provided to the spindle substantially coaxially with a rotating center of the barrier blade group, and configured to generate torque for driving the one barrier blade to rotate; and a frame member formed of two plate-shaped members each including an aperture serving as a window for opening the effective optical path of the optical lens, and configured to house the barrier blade group and the elastic member between the two plate-shaped members, wherein the spindle includes a flange portion configured to separate the barrier blade group from the elastic member in a direction of an optical axis.