Patent ID: 7842132
Filing Date: 2010-11-30
Classification: H01S

Abstract:
1. A method for producing an optical element for converting light of prescribed wavelength emitted from a light source into light of wavelength different from the prescribed wavelength; the method comprising: optically polishing a first crystal part including KTiOPO applying an acrylic adhesive whose glass transition point is 75° C. or lower to a surface of the first crystal part or the second crystal part; placing the first crystal part abutting the second crystal part with the adhesive applied in the applying step therebetween and irradiating the adhesive with light to cure the adhesive, and form an adhesive layer having a refractive index of greater than 1.49 and less than or equal to 1.52; and cutting the first crystal part and the second crystal part stuck to each other through the adhesive layer to a desired size.