A light emitting device is provided, comprising a light emitting diode 10, where the light emitting surface 11 thereof is bound to an optical element 13 by means of a bonding material 12 comprising a phosphate glass or an oxide glass having Tg<250\xb0 C. A reactor and at least one substrate disposed in the reactor are provided. Resulting shock and vibrations caused by the massage effect are absorbed and dampened by the spring and dampener for minimizing these effects upon the hand and wrist of the user. A robot receives from the computer processor the instructions for arranging the confectionary pieces, retrieves the confectionary pieces stored in the container, and arranges the pieces on the substrate in the pattern defined by the user. The low-pass wave filter comprises a variable resistance the value of which varies in accordance with the value of the control voltage. A friction-reducing layer, including one or more of -Al2O3, -A12O3 and nanocrystalline Ti and having a thickness of from about 1 to about 5 m, can be adjacent to the further layer.