Patent ID: 7623557
Filing Date: 2009-11-24
Classification: G02F,G03F,H01S

Abstract:
1. A wavelength converting optical system comprising: a first second harmonic wave forming optical element which forms a first second harmonic wave from a first fundamental wave; a third harmonic wave forming optical element which forms a third harmonic wave from the first fundamental wave and the first second harmonic wave that are emitted from the first second harmonic wave forming optical element; a fifth harmonic wave forming optical element which forms a fifth harmonic wave from the first second harmonic wave and the third harmonic wave that are emitted from the third harmonic wave forming optical element; a second harmonic wave forming optical element which forms a second harmonic wave from a second fundamental wave; an optical member which combines on the same optical path the second fundamental wave and the second harmonic wave that are emitted from the second harmonic wave forming optical element with the fifth harmonic wave that is emitted from the fifth harmonic wave forming optical element; a seventh harmonic wave forming optical element which forms a seventh harmonic wave from the second harmonic wave and the fifth harmonic wave; and an eighth harmonic wave forming optical element which forms an eighth harmonic wave from the second fundamental wave and the seventh harmonic wave that are emitted from the seventh harmonic wave forming optical element.