| 摘要 |
PURPOSE:To enable condensing of light over a wide range without tracking the solar light by forming the inside surface of the approximately semispherical surface of a spherical lens as a reflection surface, using the remaining semispherical surface as an incident surface and condensing the light made incident from the incident surface approximately at the center of the spherical lens. CONSTITUTION:The inside surface of the semispherical surface 5 of a spherical lens 4 is constituted as a reflection surface. Then, a focus 0' coincides with the center 0 of the lens 4, and incident light S is concentrated fully at the center 0. The lens 4 can be constituted of a light material and does not require any tracking device; Therefore, the entire part of the device is made light in weight and the need for special installation is eliminated. A condenser lens 6 and an optical transmission path 7 such as an optical fiber are provided at the center 0 to conduct the condensed light to the outside of the lens 4. |
