| 摘要 |
The present invention comprises a device comprising an optical body, which is arranged to refract the light (3) passing through the body and which comprises at least one first surface (2) arranged to receive the light (3) from a surrounding space, an inner cavity arranged to contain a liquid, transparent medium (6), and a second surface (4) arranged to emit the light (3) to the surrounding space. The optical body comprises a casing (5) formed by a transparent wall, having a significantly thinner wall thickness than the dimension of the optical body and determining the outer shape of the optical body, wherein said wall comprises said first (2) and second (4) surfaces and forms an essentially closed unit. |
