Optical module and method for producing the same

摘要

In a small-sized optical module, opposite side surfaces of a collimator lens ( 2 ) and opposite side surfaces of a polarization compensating filter ( 5 ) are fixed to opposite side surfaces of a rectangular frame ( 4 ). Two open surfaces are provided in the rectangular frame ( 4 ), so that optical components can be finely adjusted easily, and a large number of small-sized optical components can be aligned and assembled accurately. Reinforcing members ( 6 ) are provided in the open surfaces of the rectangular frame ( 4 ) so that the shape of the rectangular frame ( 4 ) can be retained against external force. After a diffraction grating ( 3 ) is fixed to the reinforcing members ( 6 ), the reinforcing members ( 6 ) with the diffraction grating ( 3 ) are adjusted, aligned and fixed to the rectangular frame ( 4 ).