An optical deflection device, comprising: a mirror having a reflection face for deflecting light that enters the reflection face; and a support member (13b, 13c, 13d, 13e, 13f, 13g, 13h, 13i, 13j) to support the mirror, the support member (13b-13j) including: a torsion bar (13b, 13c) having one end being continuously connected to the mirror; a beam (13d, 13e) being continuously connected to another end of the torsion bar (13b, 13c); and a plurality of piezoelectric elements (13f, 13g, 13h, 13i) disposed on the beam (13d, 13e) including a first piezoelectric element (13f, 13g) and a second piezoelectric element (13h, 13i). a control unit (100, 200, 300, 400, 550, 600) that applies drive voltage to the first piezoelectric element (13f, 13g), characterised in that the control unit (300, 400, 550, 600) includes: an operation time measurement unit (300b, 400b, 550b, 600b) to measure operation time of the mirror; a storage unit (300a, 400a, 550a, 600a) to store timewise coefficient of fluctuation of detection voltage occurred to the second piezoelectric element (13h, 13i) when the drive voltage is applied to the first piezoelectric element (13f, 13g) and a time constant related to the detection voltage; and an adjustment unit (300c, 400c, 550c, 600c) to correct the detection voltage based on the operation time, the timewise coefficient of fluctuation and the time constant, and adjusts the drive voltage based on the corrected detection voltage. wherein when the operation time is set tm, timewise coefficient of fluctuation of amplitude of the detection voltage is set ΔVk, time constant related to amplitude of the detection voltage is set τam, amplitude of the detection voltage during the mirror operation is set A(tm), and amplitude after the correction is set A'(tm), A'(tm) = A(tm)/[1 + ΔVk × [1 - exp(-tm/τam)]] is established. a mirror having a reflection face for deflecting light that enters the reflection face; and a support member (13b, 13c, 13d, 13e, 13f, 13g, 13h, 13i, 13j) to support the mirror, the support member (13b-13j) including: a torsion bar (13b, 13c) having one end being continuously connected to the mirror; a beam (13d, 13e) being continuously connected to another end of the torsion bar (13b, 13c); and a plurality of piezoelectric elements (13f, 13g, 13h, 13i) disposed on the beam (13d, 13e) including a first piezoelectric element (13f, 13g) and a second piezoelectric element (13h, 13i). a control unit (100, 200, 300, 400, 550, 600) that applies drive voltage to the first piezoelectric element (13f, 13g), a torsion bar (13b, 13c) having one end being continuously connected to the mirror; a beam (13d, 13e) being continuously connected to another end of the torsion bar (13b, 13c); and a plurality of piezoelectric elements (13f, 13g, 13h, 13i) disposed on the beam (13d, 13e) including a first piezoelectric element (13f, 13g) and a second piezoelectric element (13h, 13i). a control unit (100, 200, 300, 400, 550, 600) that applies drive voltage to the first piezoelectric element (13f, 13g), an operation time measurement unit (300b, 400b, 550b, 600b) to measure operation time of the mirror; a storage unit (300a, 400a, 550a, 600a) to store timewise coefficient of fluctuation of detection voltage occurred to the second piezoelectric element (13h, 13i) when the drive voltage is applied to the first piezoelectric element (13f, 13g) and a time constant related to the detection voltage; and an adjustment unit (300c, 400c, 550c, 600c) to correct the detection voltage based on the operation time, the timewise coefficient of fluctuation and the time constant, and adjusts the drive voltage based on the corrected detection voltage.