Optoelectronic element module
US5924290A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1998 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Feb 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/02438
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optoelectronic element module is provided, which has improved reliability in cooling performance. This module is comprised of an optoelectronic element, a Peltier unit for cooling the optoelectronic element, and a package encapsulating the optoelectronic element and the Peltier unit. The optoelectronic element is mounted directly on or indirectly through a supporting member on a first surface of the Peltier unit. A second surface of the Peltier unit is engaged with a mounting surface of the package by an engaging structure while allowing the Peltier unit to shift along the mounting surface of the package. A thermal stress caused by a difference between thermal expansion coefficients of the second surface of the Peltier unit and the mounting surface of the package is relaxed by a positional shift of the Peltier unit along the mounting surface of the package with respect to the package. Preferably, the engaging structure produces a magnetic-field force or elastic force for engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.