Optical scanner
AssigneeKonica Minolta Opto, Inc.
InventorsNaoki Kubo, Masayuki Ueyama
Life of this patent
Estimating the term…
Abstract
An optical scanner capable of preventing breakage of a shaft section due to stress concentration is provided. A mirror frame 13 is shaped so as to enclose a mirror 11, and holds the mirror 11, via torsion bars 121 and 122, so as to be vibratable. A unimorph 15 is constituted by four unimorphs 151, 152, 153, and 154 formed on upper left, lower left, upper right, and lower right sides, and holds the mirror frame 13, via a shaft section 14, so as to be vibratable. The shaft section 14 has a connection section 144. On the mirror frame 13, an adjustment member 16 for increasing a moment of inertia m1 of the mirror frame 13 is provided.
Claims8
An optical scanner comprising:
- a mirror;
- a first shaft section;
- a mirror frame that holds the mirror via the first shaft section;
- a second shaft section that holds the mirror frame;
- and
- an actuator that vibrates the mirror around the first and second shaft sections by vibrating the mirror frame via the second shaft section, wherein
- the second shaft section includes a deformable connection unit and is connected to the actuator via the connection unit, and
- the mirror frame includes an adjustment member for adjusting moment of inertia of the mirror frame with which the mirror is driven to vibrate at a resonant frequency by the actuator vibrating the mirror frame about the first shaft section, the adjustment member is provided on an extension of the second shaft section.
Dependencies are inferred from the claim text.