Optical scanning device and image forming apparatus

An optical scanning device comprising:

• a rotating polygon mirror;
• a housing that receives the rotating polygon mirror;
• a pair of light sources disposed at both sides of a first straight line passing through an axis of the rotating polygon mirror while interposing the first straight line therebetween when viewed from an axis direction of the rotating polygon mirror;
• a pair of scanning optical systems each including a pair of image forming lenses disposed to face each other while interposing the first straight line therebetween;
• a temperature sensor provided to at least one of the pair of image forming lenses to measure a temperature of the image forming lens;
• and
• a correction control unit that corrects a positional shift in a main scanning direction of light beam emitted from each of the light sources on the basis of the temperature detected by the temperature sensor,
• wherein a first receiving recess and a second receiving recess are formed on a surface of the housing, on which the pair of image forming lenses are placed,
• the temperature sensor is received in at least one of the first receiving recess and the second receiving recess, and
• the first receiving recess and the second receiving recess are formed in positions, in which thermal deformation characteristics of the housing are approximately identical at one side and the other side of the first straight line, while interposing the first straight line therebetween.