Patent ID: 7285770

Claim:
A light scanning apparatus comprising: a first light source for emitting a light beam with which a predetermined irradiation region is irradiated; a reflector for reflecting the light beam emitted from the first light source so as to lead the light beam to the predetermined irradiation region; a retaining frame having a plurality of coupling portions which are coupled to a circumferential edge portion of the reflector, for retaining the reflector via the coupling portions so that the reflector is angularly displaceable; a substrate for supporting the retaining frame; a second light source for emitting a light with which the reflector is to be irradiated; a light receiving section for receiving a reflected light which has been emitted from the second light source and reflected by the reflector; a driving section for angularly displacing the reflector so that the predetermined irradiation region is scanned with the light beam from the first light source; and a control section for controlling an angular displacement operation of the reflector through the driving section, on the basis of light receiving amount and light receiving region of the light received by the light receiving section, wherein the light receiving section has a light receiving element which produces an electronic signal according to the light receiving amount and light receiving region of the received light, wherein a signal output section which outputs an electronic signal produced by the light receiving element, and the light receiving element and the signal output section are formed integrally with the substrate, and wherein a light receiving surface of the light receiving section is in parallel with a reflecting surface, which reflects the light from the second light source, of the reflector in a standard angular position.