An optical scanning apparatus including a laser diode light source fittingly
inserted
into a holding member. The holding member is formed of a resin material having
a thermal conductivity of 0.7 w/mK or more and filled with either glass fiber
or metal oxide or both, or aluminum. A heat radiating fin projecting radially is
formed on an outer circumferential portion of the cylindrical body of the holding
member. With this structure, temperature rise due to heat emission from the laser
diode can be suppressed and deterioration of the laser diode can be prevented.
This structure simply and inexpensively provides stable optical properties to optical
scanning and image forming devices.
