Optical deflection device, optical scanning appara

专利名称：Optical deflection device, optical scanning

apparatus, image display apparatus, andimage forming apparatus

发明人：Nakagawa, Jun,Hashiguchi, Tsuyoshi,Nanjyo,

Takeshi

申请号：EP15150099.8申请日：20150105公开号：EP2891917B1公开日：20170906

摘要：An optical deflection device (2) includes a pair of zig-zag beams (22a, 22b), eachof the zig-zag beams (22a, 22b) including a plurality of first beams (A) and a plurality ofsecond beams (B) arranged with a zig-zag pattern, a frame (21) to support the zig-zagbeams (22a, 22b), a reflection mirror (26), supported by the zig-zag beams (22a, 22b), todeflect light, a plurality of piezoelectric elements (23) disposed on the first beams (A)and the second beams (B) of the zig-zag beams (22a, 22b), a voltage application unit (422)to apply a first waveform voltage to the piezoelectric elements (23) disposed on the firstbeams (A), and a second waveform voltage to the piezoelectric elements (23) disposedon the second beams (B) to flexibly deform the first beams (A) and the second beams (B)of the zig-zag beams (22a, 22b). The reflection mirror (26) is oscillate-able by the flexibledeformation of the first beams (A) and the second beams (B). The voltage application unit(422) adjusts voltage applied to the piezoelectric elements (23) depending onpiezoelectric constant of the piezoelectric elements (23) to set the oscillation of thereflection mirror (26) at a constant speed.

申请人：RICOH CO LTD

地址：JP

国籍：JP

代理机构：J A Kemp

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