| 摘要 |
PURPOSE:To reduce the driving voltage and transmission loss of an optical shutter element by sticking an internal electrode to the surface of a substrate having an electro-optical effect, laminating and hardening the substrate coated with the electrodes, insulating the end faces of opposed electrodes every other layer, and then forming external electrodes on the end faces of the insulated layers. CONSTITUTION:The internal electrode layer 13 consisting of Ni or the like is sticked to the substrate 10 consisting of a ceramic material having the electro- optical effect and the bases 10 are laminated and sticked to each other through an adhesive material. The end faces of the layers 13 exposed to the laminated end faces of the laminated body are coated with insulating layers 14 every other layer and the external electrodes 15 for power supply are adhesively formed on the layers 14. On the other hand, ground light transmission faces 21 are formed on the other end faces of the bases 10 of the laminated body. Since an electric field is infiltrated into the whole bases in said constitution, the driving voltage can be reduced and the transmission loss can be reduced because of the expansion of a light transmission area.
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