| 摘要 |
PURPOSE:To enable the position of a supplied polarizing plate to be stably detected at a process where the polarizing plate is automatically pasted to a liquid crystal cell. CONSTITUTION:An analyzer 9 for controlling a light quantity transmitted through a polarizing plate 1 to be fed and pasted to a liquid crystal cell 13, is laid between the plate 1 and an optical sensor 6 fitted for the detection thereof. The analyzer 9 has a transmission axis orthogonal with the transmission axis of the plate 1, and a cross-Nicol relationship therewith. The sensor 6 is constituted of a projector 7 for irradiating light toward the plate 1 and a light receiver for receiving light emitted from the plate 1. |
