Patent ID: 7339961
Filing Date: 2008-03-04
Classification: G02F

Abstract:
1. A wavelength converting optical system comprising: a first wavelength converting optical system which forms a fifth harmonic wave from a first fundamental wave via at least one wavelength converting optical element; a second harmonic wave forming optical element which forms a second harmonic wave from a second fundamental wave; a first optical member which combines a third fundamental wave and the second harmonic wave emitted from the second harmonic wave forming optical element on the same optical path; a second optical member which combines the third fundamental wave, the second harmonic wave emitted from the second harmonic wave forming optical element, and the fifth harmonic wave emitted from the first wavelength converting optical system on the same optical path; 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 third fundamental wave and the seventh harmonic wave emitted from the seventh harmonic wave forming optical element.