Patent ID: 6922296

Claim:
An optical path adjusting device for an optical scanning device for adjusting a vertical position of a light beam coming out of said optical path adjusting device in parallel with an original path of said light beam with respect to said original optical path, said optical path adjusting device comprising: an optical parallel having plane parallel surfaces which causes a displacement of an optical path of a light beam coming out thereof in parallel with said light beam incident thereupon from an original optical path of said light beam; a mount fixedly mounting said optical parallel thereon so that said optical parallel intersects said original optical path of said light beam at an angle of intersection except a right angle so as to cause a specified displacement of said optical path of said light beam coming out of said optical parallel from said original optical path of said light beam; and a support block supporting said mount thereon for rotation of said optical parallel about said original optical path of said light beam.