Patent ID: 6056426
Filing Date: 2000-05-02
Classification: B60Q,F21S,G02B

Abstract:
A monolithic beam shaping light output device for coupling to an optical fiber to convert an input light beam from the optical fiber into an output beam, comprising:a unitary body of light-transmitting material having an elongated beam shaping rod, a conical transition section, and an imaging lens,the beam shaping rod having input and output ends, an input surface at the input end for direct abutting contact with said optical fiber for receiving the input light beam, and a peripheral wall extending between the input and output ends for modifying distribution of the input light beam via total internal reflection to present a modified light source at the output end which emits light bounded by a maximum ray angle from a beam axis;the conical section having a small end joining the output end of the beam shaping rod, a large end opposite the small end, and a conical peripheral wall extending between the small end and the large end, the conical peripheral wall expanding at a cone angle with respect to the beam axis that is equal to or larger than the maximum ray angle;the imaging lens being integrally formed at the large end of the conical section for imaging the modified light source at the output end of the beam shaping rod into said output beam.