| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a color image recorder in which a light beam of any wavelength can be focused on a recording medium by simply inserting a color filter without varying the relative position of a light source and the recording medium. SOLUTION: A source light 10 having wide spectral distribution is focused through a condensing optical system 11 onto a recording medium 12. More than one kind of color filter 14a-14c is inserted, while time sharing, into the optical path between a light source 13 and the recording medium 12 in order to perform optical recording. At least one of the refractive index or thickness of medium is different for same wavelength among the color filters 14a-14c.</p> |
