Patent ID: 9333708
Filing Date: 2016-05-10
CPC Classification: B29C,B33Y,G03F

Claim Text:
1. An exposure device comprising: a rotation driving section configured to rotationally drive an exposure object in a rotational movement and generate a rotation synchronization signal; a light irradiation section configured to irradiate an exposure surface of the exposure object with laser light; a slide moving section secured to the light irradiation section, the slide moving section configured to linearly move the light irradiation section so as to move the laser light linearly along the exposure surface in a direction crossing a direction of rotation of the rotation driving section; a signal generating section configured to transmit an analog modulating signal to the light irradiation section in accordance with the rotation synchronization signal from the rotation driving section, the analog modulating signal configured to modulate an intensity of the laser light in accordance with the rotation synchronization signal, wherein the intensity of the laser light with which the exposure object is irradiated in a same rotation phase of the exposure object is changed with time; a controlling section configured to control the rotational movement of the rotation driving section, the slide moving section, and the light irradiation section, and wherein a movement amount for the laser light to scan the exposure surface per rotation of the exposure object by the slide moving section is less than a spot diameter of the laser light per rotation period of the exposure object.