PROBLEM TO BE SOLVED: To provide a temperature regulator capable of reducing variations in light emission with a high degree of accuracy by reducing variations in temperature of a laser light source even when the light quantity of the laser light source frequently switches between small and large light quantities.SOLUTION: The temperature regulator includes: a laser fixed plate which has first laser light sources disposed in line in a 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 in one of the first laser light sources. The first and second laser light sources are disposed at predetermined fixing intervals so that 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 can be equal to each other, and the laser fixed plate is formed in a predetermined shape.COPYRIGHT: (C)2012,JPO&INPIT【課題】レーザ光源の低光量と高光量とが頻繁に切り替えられる場合であっても、レーザ光源の温度ばらつきを少なくし、発光ばらつきを高精度に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レーザ光源の1つに配置される検温素子とを備える。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、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
