Optical module
US6880985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2003 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Jun 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4292
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In optical module 10, light emitted from laser diode (hereinafter referred to as “LD”) 42 is collimated into parallel light beam by ball lens 44 and then travels through ball lens 26 to be focused on core 104 of optical fiber 100. Since the light passing between ball lenses 44 and 26 is the parallel light beam as described above, allowance is enlarged for axial misalignment between the optical axes of ball lens 44 and ball lens 26. This enables the light from LD 42 to be focused on core 102 of optical fiber 100 even if there occurs axial misalignment between the optical axes of optical fiber 100 and LD 42 due to a factor resulting from fitting of ferrule 102 into sleeve 14 or the like. Accordingly, there is no need for alignment in a work of mounting optoelectronic device 28, i.e., LD 42 in housing 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.