发明授权
US07397590B2 Optical scanning apparatus and image forming apparatus employing this apparatus 失效
光学扫描装置和使用该装置的图像形成装置

Optical scanning apparatus and image forming apparatus employing this apparatus
摘要:
At least one exemplary embodiment is directed to an optical scanning apparatus that employs a short wave light source to constantly maintain a spot having a tiny diameter, even when an environmental temperature change occurs, by employing a lens and/or a diffractive optical element.
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