| 摘要 |
<p>PURPOSE:To obtain an inexpensive sensor receiving no effect of an electric field and a magnetic field and having a long life and a simple structure, by forming an optical wave guide part from a transparent elastomer and changing the light transmitting quantity of the optical wave guide by elastic deformation. CONSTITUTION:A sensor is constituted of an optical wave guide consisting of an optical wave guide part and a clad and the optical wave guide part comprises a transparent elastomer and the light transmitting quantity of the optical wave guide part is changed by elastic deformation. The optical wave guide used in this sensor is elastically deformed by load and changed in its light transmitting quantity. Load may be added to a part or entire part of the optical wave guide. The optical wave guide restores elastically when load is removed and can be used repeatedly. The material of the optical wave guide comprises the transparent elastomer and, as the transparent elastomer, a polysiloxane elastomer, polyurethane rubber and polybutadiene rubber are designated. The polysiloxane elastomer is especially pref. because of excellent transparency.</p> |
