Method and device for dyeing lenses

Details Method and device for dyeing lenses Method and device for dyeing lenses

2003-06-25

2008-12-16

Lu, Jiping (Department: 3749)

Drying and gas or vapor contact with solids

Apparatus

Houses, kilns, and containers

C034S218000, C034S227000, C034S236000, C432S077000, C165S060000

Reexamination Certificate

active

07464486

ABSTRACT:
In a method of coloring a dye coating-formed lens by heating, the lens is subjected to half dyeing by changing the heating temperature depending on the lens site. This dyeing method involves heating a lens having a dye coating-formed on the surface thereof in a heating furnace to diffuse a dye into the lens. This method is carried out in a heating furnace having a frame section having the shape of a cube or rectangular parallelepiped, a heating section provided within the frame section, and an insertion port for inserting the lens provided on the bottom surface of the frame section. All or a part of the lens is inserted from the insertion port into a furnace inside of the heating furnace from the lower portion of the heating furnace and heated.

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European Search Report dated Jun. 17, 2004.

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