| 摘要 |
PROBLEM TO BE SOLVED: To provide a device which allows a person to have an external clear image without being seen and can lead light into a building.SOLUTION: A building element E is used for forming especially a wall, partition, and plate for a building or a closing device such as a blind and a door, and includes a first plane 1 and a second plane 2 made of a transparent material and at least one body 3 especially having a prism or cylinder shape, limited by side walls 4. In the body 3, the element E includes at least one lens 5 which includes a focal plane and is arranged near the first plane 1, and a transmission type screen 7 which is arranged between the lens 5 and the second plane 2. An image of a space in front of the lens 5 is formed on the screen 7 and can be seen from the back of the building element E. |
