| 摘要 |
PROBLEM TO BE SOLVED: To detect white omission fault for each color by providing, on the optical path between a light source and a photoelectric transfer means, a color filter by which photodetection amount, with transfer means, and optical quantity at each color part of the color filter are made almost constant. SOLUTION: A color filter substrate 1 is placed on a test stage 2, and the light of a light source 3 is made incident on the substrate 1 through an optical amount adjusting filter 4. At the substrate 1, it transmits or is reflected on the filter pattern of red, green and blue, and becomes incident an a CCD cameras 5 and 5', and the signal is inspected for default by a detection circuit part. In addition, color filters 6 and 6' are provided before the light from the light source 3 is incident on the cameras 5 and 5'. By adjusting color of the filters 6 and 6', detection ability difference for each color caused by the difference in light transmission factor among filter pattern colors of the substrate 1 is adjusted. With this, white omission fault of each color or fault on a projection is detected. |
