Optical component and light emitting device using the same

There is provided a light emitting device using an optical component capable of emitting light having a wavelength different from that of light exit from an optical fiber (10) and obtaining light of high output, and capable of being easily attached to an end of the optical fiber. The optical component includes an optical fiber holding member (20) for holding an optical fiber (10), a light conversion member (40), and a cap (30) having an inner hole allowing the light conversion member (40) and the optical fiber holding member (20) to be inserted into and an engagement part (31) with an opening (32) for engaging inserted members at one end of the inner hole. The light conversion member (40) inserted into the inner hole of the cap (30) is fitted into the inner hole with the optical fiber holding member (20) pressed against the engagement part. The opening of the engagement part is smaller than a maximum diameter of the light conversion member (40).