| 摘要 |
PURPOSE:To obtain the nondirectional light sensor for agricultural and forestry applications by which accurate measurement can be performed, by enclosing a light receiving element by a light mixer with a suitable shape. CONSTITUTION:The light receiving element 2 is enclosed with the light mixer 1 having the suitable shape, so that the sensitivity for the light which is inputted from the various directions into the element, becomes equal. For this purpose, a light intensity reducing treatment 4 can be performed on the surface of the light mixer. In this way, the directivity is expanded and changed, and the measuring accuracy is improved. |
