Patent ID: 8125703
Filing Date: 2012-02-28
Classification: G02F,H04N

Abstract:
1. A laser wavelength converter, comprising: a laser light source for emitting laser light; a wavelength conversion element for wavelength converting laser light from the laser light source; and a condensing member for condensing the laser light, wherein: at least a part of the wavelength conversion element is formed with a polarization-reversed structure phase-matched to the laser light; the condensing member condenses the laser light at a position closer to the laser light source than to a central position of the polarization-reversed structure in a length direction of the wavelength conversion element parallel with an optical axis direction of the laser light; and the condensing member condenses the laser light at such an inner position of the wavelength conversion element that a distance from an incident end of the polarization-reversed structure is 40% or less of a dimension of the polarization-reversed structure in the length direction.