Patent ID: 6014399
Filing Date: 2000-01-11
Classification: G02B

Abstract:
A resonant optical device comprising a rod-like resonator for resonant vibration, a reflecting mirror supported on one edge of said resonator, a drive unit for oscillating said resonator in a circumferential direction, and a stationary platform to which the other edge of said resonator is anchored, such that torsional oscillation produced by resonance of said resonator via said drive unit causes said reflecting mirror to oscillate so as to scan incident light on said reflecting mirror, wherein said resonator satisfies the expressionG/.rho..gtoreq.12.times.10.sup.6 Pa.multidot.kg.sup.-1 .multidot.m.sup.3where the horizontal elastic modulus of the resonator is designated G, and the density is designated .rho..