Patent ID: 8535446
Filing Date: 2013-09-17
Classification: C23C

Abstract:
1. A coating holder comprising: a plurality of concentric annular parts with different diameters, each annular part comprising a bottom board defining a plurality of receiving holes for receiving lenses, an annular wall around the bottom board, and at least two lugs, the at least two lugs positioned on the annular wall, and; at least two drive device, each drive device comprising at least two motors, at least two shafts, and at least two strips, each shaft rotatably connected to a respective one of the at least two motors, one end of each strip fixed on a respective one of the at least two lugs, the other end of each strip wound on a respective one of the at least two shafts, wherein, in a pre-coating process, a height of the concentric annular parts is adjusted when the motors synchronously rotate the shafts to wind the strips to move the annular parts along axial directions of the annular parts.