PROBLEM TO BE SOLVED: To provide a temperature regulator capable of reducing variations in light emissions from laser light sources by reducing variations in the temperatures of the laser light sources even when the plurality of laser light sources frequently switch between an on-state and an off-state.SOLUTION: The temperature regulator includes: a laser fixed plate which has first laser light sources disposed in line in the central portion of one surface and which has second laser light sources disposed in line on the disposition-direction outside of the first laser light sources a temperature regulation element which is disposed in the central portion of the other surface of the laser fixed plate and a temperature checking element which is disposed between the first laser light source and the temperature regulation element. The first and second laser light sources are disposed at predetermined fixing intervals so that the ratio between thermal resistance between the temperature regulation element and the temperature checking element and thermal resistance between the temperature checking element and the first laser light source can be equal to the ratio between thermal resistance between the temperature regulation element and the second laser light source and thermal resistance between the second laser light source and the first laser light source, and the laser fixed plate is formed in a predetermined shape.COPYRIGHT: (C)2012,JPO&INPIT【課題】複数のレーザ光源のオンオフが頻繁に切り替えられる場合であっても、レーザ光源間の温度ばらつきを少なくし、レーザ光源間の発光ばらつきを低減することができる温度調節装置を提供する。【解決手段】温度調節装置は、一方の面の中央部に第1レーザ光源が一列に配置され、かつ、第1レーザ光源の配列方向の外側に第2レーザ光源が一列に配置されるレーザ固定板と、レーザ固定板の他方の面の中央部に配置される温調素子と、第1レーザ光源と温調素子との間に配置される検温素子とを備える。温調素子と検温素子との間の熱抵抗と、検温素子と第1レーザ光源との間の熱抵抗と、の比率、および、温調素子と第2レーザ光源との間の熱抵抗と、第2レーザ光源と第1レーザ光源との間の熱抵抗と、の比率が等しくなるように、第1レーザ光源と第2レーザ光源とが所定の固定間隔で配置され、かつ、レーザ固定板が所定の形状に形成されている。【選択図】図4
