| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical scanning device wherein power consumption is reduced while supplying a bias current to a light source, an optical scanning type image display device, and a retinal scanning type image display device. SOLUTION: The optical scanning device has: the light source which emits light of a prescribed intensity according to a supplied current; an optical scanning part which can scan the light emitted from the power source in a prescribed direction; and a light source drive part which supplies the current according to an image signal to the light source in order. The optical scanning device has improved responsiveness of the light source by supplying the bias current to the light source from the light source drive part. The light source drive part stops or reduces the supply of the bias current to the light source in at least a prescribed period out of an ineffective scanning period in which image display is not performed. COPYRIGHT: (C)2009,JPO&INPIT
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