Illumination device and method of implementing illumination device
An illumination device includes an optical fiber holder configured to hold an optical fiber, a phosphor holder configured to hold a phosphor and faces the optical fiber holder, and a bonding material configured to intervene between the optical fiber holder and the phosphor holder to bond them. The illumination device includes adjustment guide members configured to intervene between the optical fiber holder and the phosphor holder, relatively positionally adjust the optical fiber holder and the phosphor holder so as to arrange an optical axis of the optical fiber and an optical axis of the phosphor on one line, and configured to prevent the optical fiber holder and the phosphor holder from tilting when the bonding material is cured.
1. An illumination device in which after an optical fiber holder holding an optical fiber and a phosphor holder holding a phosphor are relatively positionally adjusted, a bonding material intervening between the optical fiber holder and the phosphor holder is cured to bond the optical fiber holder and the phosphor holder, comprising:
adjustment guide members configured to intervene between the optical fiber holder and the phosphor holder, relatively positionally adjust the optical fiber holder and the phosphor holder so as to arrange an optical axis of the optical fiber and an optical axis of the phosphor on one line, and configured to prevent the optical fiber holder and the phosphor holder from tilting when the bonding material is cured,
wherein the adjustment guide members have heights based on an end face of one of the optical fiber holder and the phosphor holder, on which the adjustment guide members are disposed, in an optical axis direction on the one side, and form a gap portion between the optical fiber holder and the phosphor holder by the heights, and
wherein the gap portion is filled with the bonding material.
2. The device according to claim 1 , wherein an end face of the other of the optical fiber holder and the phosphor holder and distal end faces of the adjustment guide members facing the end face of the other tilt at a desired angle with respect to an optical axis direction on the other side.
3. The device according to claim 2 , wherein the adjustment guide members are disposed on a side of an outer edge of the end face of the one and spaced part from each other at a substantially equal interval along a circumferential direction.
4. The device according to claim 3 , wherein the bonding material includes a UV-curable epoxy adhesive that is cured when irradiated with UV light.
5. The device according to claim 4 , wherein the adjustment guide members are formed from plastic-deformable members.
6. The device according to claim 5 , wherein the adjustment guide members include Au bumps and are disposed on an underlying film formed on the end face of the one.
7. The device according to claim 1 , wherein an end face of one of the optical fiber holder and the phosphor holder and distal end faces of the adjustment guide members facing the end face of the one tilt at a desired angle with respect to an optical axis direction on the other side.
8. The device according to claim 7 , wherein the adjustment guide members are disposed on a side of an outer edge of an end face of the other of the optical fiber holder and the phosphor holder and spaced part from each other at a substantially equal interval along a circumferential direction.
9. The device according to claim 1 , wherein the bonding material includes a UV-curable epoxy adhesive that is cured when irradiated with UV light.
10. The device according to claim 9 , wherein the adjustment guide members are formed from plastic-deformable members.
11. The device according to claim 10 , wherein the adjustment guide members include Au bumps and are disposed on an underlying film formed on the end face of the one.