| 摘要 |
A thermo-electric cooler comprises a pair of parallel electrically insulating and thermally conducting plates 4,5, and a number of thermo-electric elements 6 arranged between the plates. The thermoelectric elements 6 may have a graded doping density. A pair of contact electrodes 7, 8 are provided on an upper surface of the lower plate 4. Each contact electrode 7, 8 has an aperture 9, 10 aligned with apertures 11, 12 in the lower plate 4. The upper plate 5 may have a structure (20 Fig 3, 22 Fig 5) providing rigidity to the upper plate 5, thus maintaining the alignment of optical and/or opto-electronic devices mounted on the upper plate 5. |
