Patent ID: 6823109
Filing Date: 2004-11-23
Classification: G02B

Abstract:
A connecting structure for connecting and aligning a gradient index rod lens having a predetermined length with an optical fiber, the structure comprising:a first substrate having a first positioning recess adapted to support the gradient index rod lens so that an optical axis of the gradient index rod lens is fixed with respect to the first substrate, and a second positioning recess; a second substrate having a first positioning recess adapted to support the optical fiber so that an optical axis of the optical fiber is fixed with respect to the second substrate, and a second positioning recess; a guide pin supported by the second positioning recesses of the first and second substrates to fix the first substrate with respect to the second substrate so that a face of the gradient index rod lens in the first substrate is facing a face of the optical fiber in the second substrate at the junction between the first and second substrates and said optical axes are aligned, wherein incoming light is collimated by defining a distance between the face of the gradient index rod lens and the face of the optical fiber, and wherein either each of the first and second recesses of the first substrate is defined by a through-hole passing through the first substrate, or each of the first and second recesses of the second substrate is defined by a through-hole passing through the second substrate.