Claims
- 1. Element for lighting a room by selective guidance of daylight, comprising an optically transparent main body through which the light is incident into the respective room, and including a plurality of structures on which light is deflected by total reflection into the respective room, wherein said plurality of structures consists of parallel crazes.
- 2. An element according to claim 1, wherein said crazes are flat wedge-shaped deformation centers having a refractive index as variance from the index of the basic material, in vitreous thermoplastic materials.
- 3. An element according to claim 2, wherein said thermoplastic material is selected from the group consisting of ploymethylmethacrylate (PMMA), polystyrene and polycarbonate, and combinations thereof.
- 4. A method of manufacturing an element for lighting a room by selective guidance of daylight comprising the steps of:providing a plate-shaped main body made of polymer material and having a surface; and applying a tensile strength in parallel with said surface of said plate, thereby creating crazes.
- 5. A method according to claim 4, wherein the step of applying a tensile strength in parallel with the surface of said plate further comprises applying an organic solvent to said surface.
- 6. A method according to claim 5, wherein said organic solvent is a polar solvent.
- 7. A method according to claim 4, wherein the step of applying a tensile strength in parallel with the surface is performed at an elevated temperature.
- 8. A method according to claim 5, wherein the step of applying an organic solvent onto the surface is performed at an elevated temperature.
- 9. A method according to any of the claims 4 to 8, characterized in that for the application of the tensile stress a bending device is employed through which the plate material is passed in the form of a continuous material web.
- 10. A method according to claim 4, wherein the step applying a tensile strength in parallel with said surface of said plate further comprises:providing a bending device; and passing said plate-shaped main body through said bending device, wherein said plate-shaped main body is in the form of a continuous material web.
- 11. A method of manufacturing an element for lighting a room by selective guidance of daylight comprising the steps of:providing a plate-shaped main body made of polymer material and having a surface; and applying a tensile strength in parallel with said surface of said plate, thereby creating crazes, wherein the step of applying a tensile strength in parallel with the surface of said plate further comprises applying an organic solvent to said surface.
- 12. An element for lighting a room by selective guidance of daylight through an exterior wall of a building wherein the element is made by a process comprising the following steps:a) providing an optically transparent main body having a surface and made of polymer material; b) applying a tensile strength in parallel with the surface of the transparent main body in order to create a plurality of parallel crazes on which light is deflected by total reflection into the room.
- 13. The element for lighting a room by selective guidance of daylight through an exterior wall of a building of claim 12, wherein said step of applying a tensile strength in parallel with the surface of the transparent main body further comprises applying an organic solvent to the surface.
- 14. The element for lighting a room by selective guidance of daylight through an exterior wall of a building of claim 13, wherein said step of applying an organic solvent to the surface further comprises applying a polar solvent.
- 15. The element for lighting a room by selective guidance of daylight through an exterior wall of a building of claim 12, wherein said step of applying tensile strength in parallel with the surface further comprises elevating the temperature of the surface.
- 16. The element for lighting a room by selective guidance of daylight through an exterior wall of a building of claim 13, wherein said step of applying an organic solvent further comprises elevating the temperature of the surface.
- 17. An element for lighting a room by selective guidance of daylight through an exterior wall of a building of claim 12, wherein said step of providing an optically transparent main body further comprises providing an optically transparent main body in the form of a continuous web material, and passing the web material through a bending device.
Parent Case Info
This is a Continuation-In-Part of Ser. No. 09/463,559 filed Mar. 7, 2000 now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2 255 945 |
Nov 1992 |
GB |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/463559 |
Mar 2000 |
US |
Child |
09/898291 |
|
US |