| 摘要 |
PURPOSE:To enable an aberration as an entire image-forming system to be minimized and an excitating light to be converged on a solid state laser medium with a high light density even for a large number of wavelengths over a wide range of excitating light. CONSTITUTION:A condenser lens 9 allows output light of semiconductor lasers 1 to 3 from collimators 4 to 6 to be converged on a solid state laser medium 11 and the solid state laser medium 11 to be excited, where the collimaters 4 to 6 are constituted so that a color aberration for a wavelength where a color cannot be erased by the condenser lens 9 out of the wavelength of light from the semiconductor lasers 1 to 3 is compensated. |
