Patent ID: 8373737
Filing Date: 2013-02-12
Classification: B41J,G03G

Abstract:
1. An optical head comprising: a light emitting substrate that has a plurality of first light emitting portions arranged in a main scanning direction and a second light emitting portion disposed in a direction intersecting the main scanning direction with respect to the array of the plurality of first light emitting portions; and a lens array that has a plurality of first lenses, each of which is provided at a position facing each of the plurality of first light emitting portions and forms an image of light emitted from each first light emitting portion on an illumination target surface, and a second lens which forms an image of light emitted from the second light emitting portion on the illumination target surface, wherein the image of the light, which is emitted from each of the plurality of first light emitting portions, is formed at a position where the illumination target surface intersects with a straight line which connects each corresponding first light emitting portion to each first lens facing thereto, wherein a direction of the emitted light from the second light emitting portion has a slope with respect to a straight line which extends perpendicularly from a light emitting face of the corresponding second light emitting portion, and wherein when an imaging position of the light emitted from the first light emitting portion located at one end among the plurality of first light emitting portions is set as a first imaging position and an imaging position of the light emitted from another first light emitting portion is set as a second imaging position, the image of the light emitted from the second light emitting portion is formed on a side opposite to a side of the second imaging position with the first imaging position interposed therebetween.