Temperature control apparatus
US7075047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2005 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Mar 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/02415
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature control apparatus comprises a light-emitting device, a light-emitting device controller, a Peltier device for controlling the temperature of the light-emitting device to a target temperature, a temperature detector for the light-emitting device, a first reference voltage holding unit for holding a voltage corresponding to the target temperature, a reference voltage controller for outputting a holding signal and a switching signal, a second reference voltage holding unit for holding the output voltage of the temperature detector on the basis of the holding signal, a reference voltage switching unit for selecting either the output of the first reference voltage holding unit or the output of the second reference voltage holding unit as a reference voltage, and a Peltier controller for controlling the Peltier device so as to minimize a difference between the output voltage of the temperature detector and the output voltage of the reference voltage switching unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.