| 摘要 |
PURPOSE:To prevent from image picking-up the external form of the titled element by providing with a chromium oxide layer at the photographic film side of a light-shielding chromium layer. CONSTITUTION:The chromium oxide layer 14 is laminated on the chromium layer 12. A light emitted from an upper glass substrate plate 5 side after transmitting the titled element 1 reaches to the rear surface of the photographic film 20. Said film 20 sensitizes a display pattern on the rear surface thereof. In this case, a part of the rays of light arrived to the photographic film 20 incidents again thereon from the upper glass substrate plate 5 side of the titled element 1 as shown with dotted lines in the figure after reflecting on the upper substrate plate 5 side. As the greater part of said light is absorbed by the green color chromium oxide layer 14, the reflection caused by the chromium layer 12 can be controlled. Thus, the external form of the titled element 1 is not sensitized on the photographic film 20.
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