| 摘要 |
<p>A color distribution measuring optical system (21, 32, 33) generates an image of an object to be measured via an imaging optical system (21) and a color matching function filter (32). The color matching function filter (32) is an optical multilayer film filter, and the angle of disposition of the color matching function filter (32) can be changed with respect to an optical axis (Ox) of the imaging optical system (21) according to the numerical aperture of the imaging optical system (21) by a tilt angle changing device (322). Various imaging optical systems can be used even when the optical multilayer filter is used.</p> |
