Patent ID: 6625380
Filing Date: 2003-09-23
Classification: G02B

Abstract:
A method of producing a hollow mixing rod having a hollow space of quadrangular cross-section, which method comprises the steps of:producing a first and a second side part, each of which has a T-shaped cross-section comprising a crossbar and a central bar protruding therefrom, which central bar comprises a reflective end surface averted from the crossbar and, viewed in cross-section, a first and a second side surface extending from the end surface to the crossbar, wherein, at least in the first side part, the end surface and the first side surface, viewed in cross-section, converge at an angle which is not equal to 90Â°, producing a third and a fourth side part, each provided with a reflective, planar inner side, assembling the four side parts such that the end surfaces of the first and second side parts face each other and that the reflective inner sides of the third and fourth side parts, viewed in cross-section, extend parallel to each other and have their edge portions resting on the side surfaces of the central bars, so that the hollow space is limited by forming the quadrangular cross-section.