| 摘要 |
<p>PURPOSE:To miniaturize an optical measuring device by making rays emitted from the first optical fiber ray entrance end incident upon a reflecting mirror through a polarizer, an optical element or the like, and then converging the rays at the second optical fiber ray entrance end through the optical element, the polarizer or the like. CONSTITUTION:When an emission section 2 outputs a ray 1, which enters the ray entrance part 3a of the first optical fiber 3 and is led to its emitting end 3b. The ray 1 led to the end 3b enters a polarizer 8 and is converted into a linear polarized light 7, and enters a 1/4 wave length plate 10 and is converted into a circularly polarized light 9 and enters a Pockels element 11. The circularly polarized light 9 entering the element 11 is light-modulated and thereby converted into an elliptically polarized light 12. After reflecting from a concave mirror 13, the elliptically polarized light 12 enters the element 11 again, and is light-modulated similarly to the previous case, and when entering the polarizer 8, the light is rectangularly reflected, and liner polarized light 14 is converged to the ray entrance part 17a of the second optical fiber 17, and led to an emitting end 17 through the fiber 17 and received by a ray receiving section 18 and converted into an electric signal SL showing the quantity of received rays.</p> |
